제약조건 템플릿 라이브러리

제약조건 템플릿을 사용하면 제약조건의 작동 방식을 정의할 수 있지만 제약조건의 세부사항 정의를 주제별 전문 지식을 가진 개인 또는 그룹에 위임할 수 있습니다. 우려를 분리하는 것 외에도 제약조건의 논리와 정의를 분리합니다.

제약조건 템플릿이 작동하는 방식을 확인하기 위해 각 템플릿에는 예시 제약조건과 제약조건을 위반하는 리소스가 포함됩니다.

Anthos Config Management의 모든 버전에서 모든 제약조건 템플릿이 제공되지는 않습니다. 또한 템플릿은 버전 간에 변경될 수 있습니다. 템플릿 기록을 더 잘 이해하려면 Anthos Config Management 보관 파일로 이동하여 이 페이지의 이전 버전을 보면 됩니다.

모든 제약조건에는 제약조건이 적용되는 객체를 정의하는 match 섹션이 포함되어 있습니다. 해당 섹션을 구성하는 방법에 대한 자세한 내용은 제약조건 일치 섹션을 참조하세요.

AllowedServicePortName

서비스 포트 이름에 지정된 목록의 프리픽스가 포함되어야 합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AllowedServicePortName
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # prefixes <array>: Prefixes of allowed service port names.
    prefixes:
      - <string>

예시

port-name-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AllowedServicePortName
metadata:
  name: port-name-constraint
spec:
  enforcementAction: deny
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Service
  parameters:
    prefixes:
    - http-
    - http2-
    - grpc-
    - mongo-
    - redis-
    - tcp-
허용됨
apiVersion: v1
kind: Service
metadata:
  labels:
    app: helloworld
  name: port-name-http
spec:
  ports:
  - name: http-helloport
    port: 5000
  selector:
    app: helloworld
허용되지 않음
apiVersion: v1
kind: Service
metadata:
  labels:
    app: helloworld
  name: port-name-tcp
spec:
  ports:
  - name: foo-helloport
    port: 5000
  selector:
    app: helloworld
apiVersion: v1
kind: Service
metadata:
  labels:
    app: helloworld
  name: port-name-bad
spec:
  ports:
  - name: helloport
    port: 5000
  selector:
    app: helloworld

AsmAuthzPolicyDefaultDeny

메시 수준 기본 거부 AuthorizationPolicy를 적용합니다. https://istio.io/latest/docs/ops/best-practices/security/#use-default-deny-patterns에 대한 참조입니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # rootNamespace <string>: Anthos Service Mesh root namespace, default value
    # is "istio-system" if not specified.
    rootNamespace: <string>
    # strictnessLevel <string>: Level of AuthorizationPolicy strictness.
    # Allowed Values: Low, High
    strictnessLevel: <string>

예시

asm-authz-policy-default-deny-with-input-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-with-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    rootNamespace: istio-system
    strictnessLevel: High
허용됨
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-with-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    rootNamespace: istio-system
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: default-deny-no-action
  namespace: istio-system
spec: null
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-with-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    rootNamespace: istio-system
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: default-deny-with-action
  namespace: istio-system
spec:
  action: ALLOW
허용되지 않음
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-with-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    rootNamespace: istio-system
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: not-default-deny
  namespace: istio-system
spec:
  action: DENY
  rules:
  - to:
    - operation:
        notMethods:
        - GET
        - POST

asm-authz-policy-default-deny-no-input-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-no-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    strictnessLevel: High
허용됨
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-no-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: default-deny-no-action
  namespace: istio-system
spec: null
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-no-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: default-deny-with-action
  namespace: istio-system
spec:
  action: ALLOW
허용되지 않음
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDefaultDeny
metadata:
  name: asm-authz-policy-default-deny-no-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: not-default-deny
  namespace: istio-system
spec:
  action: DENY
  rules:
  - to:
    - operation:
        notMethods:
        - GET
        - POST

AsmAuthzPolicyDisallowedPrefix

Istio AuthorizationPolicy 규칙의 주 구성원 및 네임스페이스에 지정된 목록의 프리픽스가 포함되지 않아야 합니다. https://istio.io/latest/docs/reference/config/security/authorization-policy/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDisallowedPrefix
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # disallowedNamespacePrefixes <array>: Disallowed prefixes for namespaces.
    disallowedNamespacePrefixes:
      - <string>
    # disallowedPrincipalPrefixes <array>: Disallowed prefixes for principals.
    disallowedPrincipalPrefixes:
      - <string>

예시

asm-authz-policy-disallowed-prefix-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyDisallowedPrefix
metadata:
  name: asm-authz-policy-disallowed-prefix-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - AuthorizationPolicy
  parameters:
    disallowedNamespacePrefixes:
    - bad-ns-prefix
    - worse-ns-prefix
    disallowedPrincipalPrefixes:
    - bad-principal-prefix
    - worse-principal-prefix
허용됨
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: valid-authz-policy
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
    - source:
        namespaces:
        - test
  selector:
    matchLabels:
      app: httpbin
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: bad-source-principal
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/worse-principal-prefix-sleep
    - source:
        namespaces:
        - test
  selector:
    matchLabels:
      app: httpbin
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: bad-source-namespace
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
    - source:
        namespaces:
        - bad-ns-prefix-test
  selector:
    matchLabels:
      app: httpbin

AsmAuthzPolicyEnforceSourcePrincipals

거부된 경우 Istio AuthorizationPolicy '시작' 필드에 '*'이 아닌 값으로 설정되어야 하는 소스 주 구성원이 있어야 합니다. https://istio.io/latest/docs/reference/config/security/authorization-policy/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyEnforceSourcePrincipals
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

asm-authz-policy-enforce-source-principals-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyEnforceSourcePrincipals
metadata:
  name: asm-authz-policy-enforce-source-principals-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - AuthorizationPolicy
허용됨
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: valid-authz-policy
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: no-source-principals
spec:
  rules:
  - from:
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: source-principals-wildcard
spec:
  rules:
  - from:
    - source:
        principals:
        - '*'
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: source-principals-contains-wildcard
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
        - '*'
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin

AsmAuthzPolicyNormalization

AuthorizationPolicy 정규화를 적용합니다. https://istio.io/latest/docs/reference/config/security/normalization/에 대한 참조입니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyNormalization
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

Examples

asm-authz-policy-normalization-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicyNormalization
metadata:
  name: asm-authz-policy-normalization-sample
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - AuthorizationPolicy
허용됨
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: good-authz-policy
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        methods:
        - GET
        paths:
        - /test/foo
  - when:
    - key: source.ip
      values:
      - 10.1.2.3
      - 10.2.0.0/16
    - key: request.headers[User-Agent]
      values:
      - Mozilla/*
  selector:
    matchLabels:
      app: httpbin
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: bad-method-lowercase
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        methods:
        - get
  selector:
    matchLabels:
      app: httpbin
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: bad-request-header-whitespace
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        methods:
        - GET
  - when:
    - key: source.ip
      values:
      - 10.1.2.3
      - 10.2.0.0/16
    - key: request.headers[User-Ag ent]
      values:
      - Mozilla/*
  selector:
    matchLabels:
      app: httpbin
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: path-unnormalized
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        methods:
        - GET
        paths:
        - /test\/foo
  - when:
    - key: source.ip
      values:
      - 10.1.2.3
      - 10.2.0.0/16
    - key: request.headers[User-Agent]
      values:
      - Mozilla/*
  selector:
    matchLabels:
      app: httpbin

AsmAuthzPolicySafePattern

AuthorizationPolicy 안전 패턴을 적용합니다. https://istio.io/latest/docs/ops/best-practices/security/#safer-authorization-policy-patterns에 대한 참조입니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicySafePattern
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # strictnessLevel <string>: Level of AuthorizationPolicy strictness.
    # Allowed Values: Low, High
    strictnessLevel: <string>

Examples

asm-authz-policy-safe-pattern-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmAuthzPolicySafePattern
metadata:
  name: asm-authz-policy-safe-pattern-sample
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - AuthorizationPolicy
  parameters:
    strictnessLevel: High
허용됨
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: good-authz-policy-istio-ingress
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        hosts:
        - test.com
        - test.com:*
        methods:
        - GET
  selector:
    matchLabels:
      istio: ingressgateway
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: good-authz-policy-asm-ingress
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        hosts:
        - test.com
        - test.com:*
        methods:
        - GET
  selector:
    matchLabels:
      asm: ingressgateway
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: hosts-on-noningress
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        hosts:
        - test.com
        - test.com:*
        methods:
        - GET
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: invalid-hosts
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        hosts:
        - test.com
        methods:
        - GET
  selector:
    matchLabels:
      istio: ingressgateway
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: allow-negative-match
spec:
  action: ALLOW
  rules:
  - to:
    - operation:
        hosts:
        - test.com
        - test.com:*
        notMethods:
        - GET
  selector:
    matchLabels:
      istio: ingressgateway
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: deny-positive-match
spec:
  action: DENY
  rules:
  - to:
    - operation:
        hosts:
        - test.com
        - test.com:*
        methods:
        - GET
  selector:
    matchLabels:
      istio: ingressgateway

AsmIngressgatewayLabel

ingressgateway 포드에만 istio ingressgateway 라벨 사용을 적용합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmIngressgatewayLabel
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

Examples

asm-ingressgateway-label-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmIngressgatewayLabel
metadata:
  name: asm-ingressgateway-label-sample
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: sleep
    istio: istio
  name: sleep
spec:
  containers:
  - image: curlimages/curl
    name: sleep
  - image: gcr.io/gke-release/asm/proxyv2:release
    name: istio-proxy
    ports:
    - containerPort: 15090
      name: http-envoy-prom
      protocol: TCP
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: istio-ingressgateway
    istio: ingressgateway
  name: istio-ingressgateway
spec:
  containers:
  - image: gcr.io/gke-release/asm/proxyv2:release
    name: istio-proxy
    ports:
    - containerPort: 15090
      name: http-envoy-prom
      protocol: TCP
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: asm-ingressgateway
    asm: ingressgateway
  name: asm-ingressgateway
spec:
  containers:
  - image: gcr.io/gke-release/asm/proxyv2:release
    name: istio-proxy
    ports:
    - containerPort: 15090
      name: http-envoy-prom
      protocol: TCP
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: sleep
    istio: ingressgateway
  name: sleep
spec:
  containers:
  - image: curlimages/curl
    name: sleep
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: sleep
    asm: ingressgateway
  name: sleep
spec:
  containers:
  - image: curlimages/curl
    name: sleep
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: sleep
    istio: ingressgateway
  name: sleep
spec:
  containers:
  - image: curlimages/curl
    name: sleep
  - image: gcr.io/gke-release/asm/proxyv2:release
    name: istio-proxy
    ports:
    - containerPort: 15090
      name: http-envoy-prom
      protocol: TCP

AsmPeerAuthnMeshStrictMtls

메시 수준 엄격한 mtls PeerAuthentication을 적용합니다. https://istio.io/latest/docs/ops/best-practices/security/#mutual-tls에 대한 참조입니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnMeshStrictMtls
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # rootNamespace <string>: Anthos Service Mesh root namespace, default value
    # is "istio-system" if not specified.
    rootNamespace: <string>
    # strictnessLevel <string>: Level of PeerAuthentication strictness.
    # Allowed Values: Low, High
    strictnessLevel: <string>

예시

asm-peer-authn-mesh-strict-mtls-with-input-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnMeshStrictMtls
metadata:
  name: asm-peer-authn-mesh-strict-mtls-with-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    rootNamespace: asm-root
    strictnessLevel: High
허용됨
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnMeshStrictMtls
metadata:
  name: asm-peer-authn-mesh-strict-mtls-with-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    rootNamespace: asm-root
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mesh-strict-mtls
  namespace: asm-root
spec:
  mtls:
    mode: STRICT
허용되지 않음
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnMeshStrictMtls
metadata:
  name: asm-peer-authn-mesh-strict-mtls-with-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    rootNamespace: asm-root
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mesh-permissive-mtls
  namespace: asm-root
spec:
  mtls:
    mode: PERMISSIVE

asm-peer-authn-mesh-strict-mtls-no-input-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnMeshStrictMtls
metadata:
  name: asm-peer-authn-mesh-strict-mtls-no-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    strictnessLevel: High
허용됨
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnMeshStrictMtls
metadata:
  name: asm-peer-authn-mesh-strict-mtls-no-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mesh-strict-mtls
  namespace: istio-system
spec:
  mtls:
    mode: STRICT
허용되지 않음
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnMeshStrictMtls
metadata:
  name: asm-peer-authn-mesh-strict-mtls-no-input-constraint
spec:
  enforcementAction: dryrun
  parameters:
    strictnessLevel: High
---
# Referential Data
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mesh-permissive-mtls
  namespace: istio-system
spec:
  mtls:
    mode: PERMISSIVE

AsmPeerAuthnStrictMtls

모든 PeerAuthentications로 엄격한 mtls를 덮어쓸 수 없음을 적용합니다. https://istio.io/latest/docs/ops/best-practices/security/#mutual-tls에 대한 참조입니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnStrictMtls
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # strictnessLevel <string>: Level of PeerAuthentication strictness.
    # Allowed Values: Low, High
    strictnessLevel: <string>

예시

asm-peer-authn-strict-mtls-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmPeerAuthnStrictMtls
metadata:
  name: asm-peer-authn-strict-mtls-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - PeerAuthentication
  parameters:
    strictnessLevel: High
허용됨
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: valid-strict-mtls-pa
  namespace: foo
spec:
  mtls:
    mode: UNSET
  portLevelMtls:
    "80":
      mode: UNSET
    "443":
      mode: STRICT
  selector:
    matchLabels:
      app: bar
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: invalid-permissive-mtls-pa
  namespace: foo
spec:
  mtls:
    mode: PERMISSIVE
  portLevelMtls:
    "80":
      mode: UNSET
    "443":
      mode: STRICT
  selector:
    matchLabels:
      app: bar
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: invalid-port-disable-mtls-pa
  namespace: foo
spec:
  mtls:
    mode: UNSET
  portLevelMtls:
    "80":
      mode: DISABLE
    "443":
      mode: STRICT
  selector:
    matchLabels:
      app: bar

AsmRequestAuthnProhibitedOutputHeader

RequestAuthentication에서 잘 알려진 HTTP 요청 헤더 또는 커스텀 금지된 헤더를 포함하지 않도록 jwtRules.outPayloadToHeader 필드를 적용합니다. https://istio.io/latest/docs/reference/config/security/jwt/#JWTRule에 대한 참조입니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmRequestAuthnProhibitedOutputHeaders
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # prohibitedHeaders <array>: User predefined prohibited headers.
    prohibitedHeaders:
      - <string>

Examples

asm-request-authn-prohibited-output-headers-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmRequestAuthnProhibitedOutputHeaders
metadata:
  name: asm-request-authn-prohibited-output-headers-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - RequestAuthentication
  parameters:
    prohibitedHeaders:
    - Bad-Header
    - X-Bad-Header
허용됨
apiVersion: security.istio.io/v1beta1
kind: RequestAuthentication
metadata:
  name: valid-request-authn
  namespace: istio-system
spec:
  jwtRules:
  - issuer: example.com
    outputPayloadToHeader: Good-Header
  selector:
    matchLabels:
      app: istio-ingressgateway
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: RequestAuthentication
metadata:
  name: deny-predefined-output-header
  namespace: istio-system
spec:
  jwtRules:
  - issuer: example.com
    outputPayloadToHeader: Host
  selector:
    matchLabels:
      app: istio-ingressgateway
apiVersion: security.istio.io/v1beta1
kind: RequestAuthentication
metadata:
  name: deny-predefined-output-header
  namespace: istio-system
spec:
  jwtRules:
  - issuer: example.com
    outputPayloadToHeader: X-Bad-Header
  selector:
    matchLabels:
      app: istio-ingressgateway

AsmSidecarInjection

워크로드 포드에 istio 프록시 사이드카가 항상 삽입되도록 적용합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmSidecarInjection
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # strictnessLevel <string>: Level of sidecar injection strictness.
    # Allowed Values: Low, High
    strictnessLevel: <string>

Examples

asm-sidecar-injection-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: AsmSidecarInjection
metadata:
  name: asm-sidecar-injection-sample
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    strictnessLevel: High
허용됨
apiVersion: v1
kind: Pod
metadata:
  annotations:
    sidecar.istio.io/inject: "true"
  name: sleep
spec:
  containers:
  - image: curlimages/curl
    name: sleep
  - image: gcr.io/gke-release/asm/proxyv2:release
    name: istio-proxy
    ports:
    - containerPort: 15090
      name: http-envoy-prom
      protocol: TCP
apiVersion: v1
kind: Pod
metadata:
  annotations:
    "false": "false"
  name: sleep
spec:
  containers:
  - image: curlimages/curl
    name: sleep
  - image: gcr.io/gke-release/asm/proxyv2:release
    name: istio-proxy
    ports:
    - containerPort: 15090
      name: http-envoy-prom
      protocol: TCP
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  annotations:
    sidecar.istio.io/inject: "false"
  name: sleep
spec:
  containers:
  - image: curlimages/curl
    name: sleep

DestinationRuleTLSEnabled

Istio DestinationRules에서 모든 호스트 및 호스트 하위 집합에 TLS 중지를 금지합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: DestinationRuleTLSEnabled
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

dr-tls-enabled

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: DestinationRuleTLSEnabled
metadata:
  name: dr-tls-enabled
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - networking.istio.io
      kinds:
      - DestinationRule
허용되지 않음
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: dr-subset-tls-disable
  namespace: default
spec:
  host: myservice
  subsets:
  - name: v1
    trafficPolicy:
      tls:
        mode: DISABLE
  - name: v2
    trafficPolicy:
      tls:
        mode: SIMPLE
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: dr-traffic-tls-disable
  namespace: default
spec:
  host: myservice
  trafficPolicy:
    tls:
      mode: DISABLE

DisallowedAuthzPrefix

Istio AuthorizationPolicy 규칙의 주 구성원 및 네임스페이스에 지정된 목록의 프리픽스가 포함되지 않아야 합니다. https://istio.io/latest/docs/reference/config/security/authorization-policy/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: DisallowedAuthzPrefix
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # disallowedprefixes <array>: Disallowed prefixes of principals and
    # namespaces.
    disallowedprefixes:
      - <string>

예시

disallowed-authz-prefix-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: DisallowedAuthzPrefix
metadata:
  name: disallowed-authz-prefix-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - AuthorizationPolicy
  parameters:
    disallowedprefixes:
    - badprefix
    - reallybadprefix
허용됨
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: good
  namespace: foo
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
      version: v1
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: bad-source-principal
  namespace: foo
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/badprefix-sleep
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
      version: v1
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: bad-source-namespace
  namespace: foo
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
    - source:
        namespaces:
        - badprefix-test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
      version: v1

GCPStorageLocationConstraintV1

StorageBucket Config Connector 리소스의 허용되는 locations를 제약조건에 제공된 위치 목록으로 제한합니다. exemptions 목록의 버킷 이름은 제외됩니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: GCPStorageLocationConstraintV1
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptions <array>: A list of bucket names that are exempt from this
    # constraint.
    exemptions:
      - <string>
    # locations <array>: A list of locations that a bucket is permitted to
    # have.
    locations:
      - <string>

예시

singapore-and-jakarta-only

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: GCPStorageLocationConstraintV1
metadata:
  name: singapore-and-jakarta-only
spec:
  enforcementAction: deny
  match:
    kinds:
    - apiGroups:
      - storage.cnrm.cloud.google.com
      kinds:
      - StorageBucket
  parameters:
    exemptions:
    - my_project_id_cloudbuild
    locations:
    - asia-southeast1
    - asia-southeast2
허용됨
apiVersion: storage.cnrm.cloud.google.com/v1beta1
kind: StorageBucket
metadata:
  name: bucket-in-permitted-location
spec:
  location: asia-southeast1
허용되지 않음
apiVersion: storage.cnrm.cloud.google.com/v1beta1
kind: StorageBucket
metadata:
  name: bucket-in-disallowed-location
spec:
  location: us-central1
apiVersion: storage.cnrm.cloud.google.com/v1beta1
kind: StorageBucket
metadata:
  name: bucket-without-specific-location
spec: null

K8sAllowedRepos

컨테이너 이미지가 지정된 목록의 문자열로 시작해야 합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sAllowedRepos
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # repos <array>: The list of prefixes a container image is allowed to have.
    repos:
      - <string>

예시

repo-is-openpolicyagent

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sAllowedRepos
metadata:
  name: repo-is-openpolicyagent
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
    namespaces:
    - default
  parameters:
    repos:
    - openpolicyagent/
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: nginx-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
apiVersion: v1
kind: Pod
metadata:
  name: nginx-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
  initContainers:
  - image: nginx
    name: nginxinit
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
apiVersion: v1
kind: Pod
metadata:
  name: nginx-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
  initContainers:
  - image: nginx
    name: nginxinit
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
apiVersion: v1
kind: Pod
metadata:
  name: nginx-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
  ephemeralContainers:
  - image: nginx
    name: nginx
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
  initContainers:
  - image: nginx
    name: nginx
    resources:
      limits:
        cpu: 100m
        memory: 30Mi

K8sBlockEndpointEditDefaultRole

대부분의 Kubernetes 설치에는 기본적으로 Endpoints 수정에 대한 액세스를 올바르게 제한하지 않는 system:aggregate-to-edit ClusterRole이 있습니다. 이 ConstraintTemplate은 system:aggregate-to-edit ClusterRole이 Endpoints를 생성/패치/업데이트할 수 있는 권한을 부여하지 못하게 합니다. ClusterRole/system:aggregate-to-edit는 CVE-2021-25740으로 인해 Endpoint 수정 권한을 허용하지 않습니다. Endpoint 및 EndpointSlice 권한은 네임스페이스 간 전달을 허용합니다. https://github.com/kubernetes/kubernetes/issues/103675.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockEndpointEditDefaultRole
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

block-endpoint-edit-default-role

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockEndpointEditDefaultRole
metadata:
  name: block-endpoint-edit-default-role
spec:
  match:
    kinds:
    - apiGroups:
      - rbac.authorization.k8s.io
      kinds:
      - ClusterRole
허용됨
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
    rbac.authorization.k8s.io/aggregate-to-edit: "true"
  name: system:aggregate-to-edit
rules:
- apiGroups:
  - ""
  resources:
  - pods/attach
  - pods/exec
  - pods/portforward
  - pods/proxy
  - secrets
  - services/proxy
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  resources:
  - serviceaccounts
  verbs:
  - impersonate
- apiGroups:
  - ""
  resources:
  - pods
  - pods/attach
  - pods/exec
  - pods/portforward
  - pods/proxy
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - ""
  resources:
  - configmaps
  - persistentvolumeclaims
  - replicationcontrollers
  - replicationcontrollers/scale
  - secrets
  - serviceaccounts
  - services
  - services/proxy
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - apps
  resources:
  - daemonsets
  - deployments
  - deployments/rollback
  - deployments/scale
  - replicasets
  - replicasets/scale
  - statefulsets
  - statefulsets/scale
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - autoscaling
  resources:
  - horizontalpodautoscalers
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - batch
  resources:
  - cronjobs
  - jobs
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - extensions
  resources:
  - daemonsets
  - deployments
  - deployments/rollback
  - deployments/scale
  - ingresses
  - networkpolicies
  - replicasets
  - replicasets/scale
  - replicationcontrollers/scale
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - policy
  resources:
  - poddisruptionbudgets
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - networking.k8s.io
  resources:
  - ingresses
  - networkpolicies
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
허용되지 않음
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
    rbac.authorization.k8s.io/aggregate-to-edit: "true"
  name: system:aggregate-to-edit
rules:
- apiGroups:
  - ""
  resources:
  - pods/attach
  - pods/exec
  - pods/portforward
  - pods/proxy
  - secrets
  - services/proxy
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  resources:
  - serviceaccounts
  verbs:
  - impersonate
- apiGroups:
  - ""
  resources:
  - pods
  - pods/attach
  - pods/exec
  - pods/portforward
  - pods/proxy
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - ""
  resources:
  - configmaps
  - persistentvolumeclaims
  - replicationcontrollers
  - replicationcontrollers/scale
  - secrets
  - serviceaccounts
  - services
  - services/proxy
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update
- apiGroups:
  - apps
  resources:
  - daemonsets
  - deployments
  - deployments/rollback
  - deployments/scale
  - endpoints
  - replicasets
  - replicasets/scale
  - statefulsets
  - statefulsets/scale
  verbs:
  - create
  - delete
  - deletecollection
  - patch
  - update

K8sBlockNodePort

NodePort 유형이 포함된 모든 서비스를 금지합니다. https://kubernetes.io/docs/concepts/services-networking/service/#nodeport

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockNodePort
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

block-node-port

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockNodePort
metadata:
  name: block-node-port
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Service
허용되지 않음
apiVersion: v1
kind: Service
metadata:
  name: my-service-disallowed
spec:
  ports:
  - nodePort: 30007
    port: 80
    targetPort: 80
  type: NodePort

K8sBlockProcessNamespaceSharing

shareProcessNamespacetrue로 설정된 포드 사양을 금지합니다. 한 포드의 모든 컨테이너가 PID 네임스페이스를 공유하고 서로의 파일 시스템 및 메모리에 액세스할 수 있는 시나리오를 방지합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockProcessNamespaceSharing
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

block-process-namespace-sharing

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockProcessNamespaceSharing
metadata:
  name: block-process-namespace-sharing
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: good-pod
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: bad-pod
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx
  shareProcessNamespace: true

K8sBlockWildcardIngress

사용자는 비어 있는 또는 와일드 카드(*) 호스트 이름으로 인그레스를 만들 수 없어야 합니다. 해당 서비스에 액세스할 수 없더라도 클러스터의 다른 서비스에 대한 트래픽을 가로챌 수 있기 때문입니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockWildcardIngress
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

Examples

block-wildcard-ingress

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sBlockWildcardIngress
metadata:
  name: block-wildcard-ingress
spec:
  match:
    kinds:
    - apiGroups:
      - extensions
      - networking.k8s.io
      kinds:
      - Ingress
허용됨
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: non-wildcard-ingress
spec:
  rules:
  - host: myservice.example.com
    http:
      paths:
      - backend:
          service:
            name: example
            port:
              number: 80
        path: /
        pathType: Prefix
허용되지 않음
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: wildcard-ingress
spec:
  rules:
  - host: ""
    http:
      paths:
      - backend:
          service:
            name: example
            port:
              number: 80
        path: /
        pathType: Prefix
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: wildcard-ingress
spec:
  rules:
  - http:
      paths:
      - backend:
          service:
            name: example
            port:
              number: 80
        path: /
        pathType: Prefix
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: wildcard-ingress
spec:
  rules:
  - host: '*.example.com'
    http:
      paths:
      - backend:
          service:
            name: example
            port:
              number: 80
        path: /
        pathType: Prefix
  - host: valid.example.com
    http:
      paths:
      - backend:
          service:
            name: example
            port:
              number: 80
        path: /
        pathType: Prefix

K8sContainerLimits

컨테이너에 메모리 및 CPU 한도를 설정해야 하며 지정된 최댓값 내로 한도를 제한해야 합니다. https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerLimits
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # cpu <string>: The maximum allowed cpu limit on a Pod, exclusive.
    cpu: <string>
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # memory <string>: The maximum allowed memory limit on a Pod, exclusive.
    memory: <string>

예시

container-must-have-limits

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerLimits
metadata:
  name: container-must-have-limits
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    cpu: 200m
    memory: 1Gi
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 1Gi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 2Gi

K8sContainerRatios

요청에 대한 컨테이너 리소스 한도의 최대 비율을 설정합니다. https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerRatios
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # cpuRatio <string>: The maximum allowed ratio of `resources.limits.cpu` to
    # `resources.requests.cpu` on a container. If not specified, equal to
    # `ratio`.
    cpuRatio: <string>
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # ratio <string>: The maximum allowed ratio of `resources.limits` to
    # `resources.requests` on a container.
    ratio: <string>

예시

container-must-meet-ratio

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerRatios
metadata:
  name: container-must-meet-ratio
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    ratio: "2"
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 200m
        memory: 200Mi
      requests:
        cpu: 100m
        memory: 100Mi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 800m
        memory: 2Gi
      requests:
        cpu: 100m
        memory: 100Mi

container-must-meet-memory-and-cpu-ratio

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerRatios
metadata:
  name: container-must-meet-memory-and-cpu-ratio
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    cpuRatio: "10"
    ratio: "1"
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: "4"
        memory: 2Gi
      requests:
        cpu: "1"
        memory: 2Gi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: "4"
        memory: 2Gi
      requests:
        cpu: 100m
        memory: 2Gi

K8sContainerRequest

컨테이너에 메모리 및 CPU 요청을 설정해야 하며 지정된 최댓값 내로 요청을 제한해야 합니다. https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerRequests
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # cpu <string>: The maximum allowed cpu request on a Pod, exclusive.
    cpu: <string>
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # memory <string>: The maximum allowed memory request on a Pod, exclusive.
    memory: <string>

Examples

container-must-have-requests

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sContainerRequests
metadata:
  name: container-must-have-requests
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    cpu: 200m
    memory: 1Gi
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      requests:
        cpu: 100m
        memory: 1Gi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      requests:
        cpu: 100m
        memory: 2Gi

K8sDisallowAnonymous

system:anonymous 사용자 및 system:unauthenticated 그룹에 대해 ClusterRole 및 Role 리소스 연결을 금지합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sDisallowAnonymous
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedRoles <array>: The list of ClusterRoles and Roles that may be
    # associated with the `system:unauthenticated` group and `system:anonymous`
    # user.
    allowedRoles:
      - <string>

예시

no-anonymous

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sDisallowAnonymous
metadata:
  name: no-anonymous
spec:
  match:
    kinds:
    - apiGroups:
      - rbac.authorization.k8s.io
      kinds:
      - ClusterRoleBinding
    - apiGroups:
      - rbac.authorization.k8s.io
      kinds:
      - RoleBinding
  parameters:
    allowedRoles:
    - cluster-role-1
허용됨
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: cluster-role-binding-1
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-role-1
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:authenticated
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:unauthenticated
허용되지 않음
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: cluster-role-binding-2
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-role-2
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:authenticated
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:unauthenticated

K8sDisallowedRoleBindingSubjects

매개변수로 전달된 모든 disallowedSubjects와 일치하는 RoleBindings 또는 ClusterRoleBindings를 금지합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sDisallowedRoleBindingSubjects
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # disallowedSubjects <array>: A list of subjects that cannot appear in a
    # RoleBinding.
    disallowedSubjects:
      - # apiGroup <string>: The Kubernetes API group of the disallowed role
        # binding subject. Currently ignored.
        apiGroup: <string>
        # kind <string>: The kind of the disallowed role binding subject.
        kind: <string>
        # name <string>: The name of the disallowed role binding subject.
        name: <string>

예시

disallowed-rolebinding-subjects

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sDisallowedRoleBindingSubjects
metadata:
  name: disallowed-rolebinding-subjects
spec:
  parameters:
    disallowedSubjects:
    - apiGroup: rbac.authorization.k8s.io
      kind: Group
      name: system:unauthenticated
허용됨
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: good-clusterrolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: my-role
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:authenticated
허용되지 않음
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: bad-clusterrolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: my-role
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:unauthenticated

K8sDisallowedTags

컨테이너 이미지가 지정된 목록에 있는 것과 다른 이미지 태그를 갖도록 지정합니다. https://kubernetes.io/docs/concepts/containers/images/#image-names

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sDisallowedTags
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # tags <array>: Disallowed container image tags.
    tags:
      - <string>

예시

container-image-must-not-have-latest-tag

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sDisallowedTags
metadata:
  name: container-image-must-not-have-latest-tag
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
    namespaces:
    - default
  parameters:
    exemptImages:
    - openpolicyagent/opa-exp:latest
    - openpolicyagent/opa-exp2:latest
    tags:
    - latest
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
apiVersion: v1
kind: Pod
metadata:
  name: opa-exempt-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa-exp:latest
    name: opa-exp
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/init:v1
    name: opa-init
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa-exp2:latest
    name: opa-exp2
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa
    name: opa
apiVersion: v1
kind: Pod
metadata:
  name: opa-disallowed-2
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:latest
    name: opa
apiVersion: v1
kind: Pod
metadata:
  name: opa-disallowed-ephemeral
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
  ephemeralContainers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:latest
    name: opa
apiVersion: v1
kind: Pod
metadata:
  name: opa-disallowed-3
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa-exp:latest
    name: opa
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/init:latest
    name: opa-init
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa-exp2:latest
    name: opa-exp2
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/monitor:latest
    name: opa-monitor

K8sEmptyDirHasSizeLimit

모든 emptyDir 볼륨은 sizeLimit를 지정해야 합니다. 선택적으로 최대 허용 크기 한도를 지정하기 위해 제약조건에 maxSizeLimit 매개변수를 제공할 수 있습니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sEmptyDirHasSizeLimit
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # maxSizeLimit <string>: When set, the declared size limit for each volume
    # must be less than `maxSizeLimit`.
    maxSizeLimit: <string>

예시

empty-dir-has-size-limit

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sEmptyDirHasSizeLimit
metadata:
  name: empty-dir-has-size-limit
spec:
  parameters:
    maxSizeLimit: 4Gi
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: good-pod
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx
  volumes:
  - emptyDir:
      sizeLimit: 2Gi
    name: good-pod-volume
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: bad-pod
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx
  volumes:
  - emptyDir: {}
    name: bad-pod-volume

K8sExternalIPs

Service externalIPs를 허용된 IP 주소 목록으로 제한합니다. https://kubernetes.io/docs/concepts/services-networking/service/#external-ips

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sExternalIPs
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedIPs <array>: An allow-list of external IP addresses.
    allowedIPs:
      - <string>

예시

external-ips

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sExternalIPs
metadata:
  name: external-ips
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Service
  parameters:
    allowedIPs:
    - 203.0.113.0
허용됨
apiVersion: v1
kind: Service
metadata:
  name: allowed-external-ip
spec:
  externalIPs:
  - 203.0.113.0
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    app: MyApp
허용되지 않음
apiVersion: v1
kind: Service
metadata:
  name: disallowed-external-ip
spec:
  externalIPs:
  - 1.1.1.1
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    app: MyApp

K8sHttpsOnly

인그레스 리소스가 HTTPS 전용이어야 합니다. 인그레스 리소스는 유효한 TLS 구성을 포함하고, kubernetes.io/ingress.allow-http 주석을 포함하고, false로 설정되어야 합니다. https://kubernetes.io/docs/concepts/services-networking/ingress/#tls

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sHttpsOnly
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

ingress-https-only

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sHttpsOnly
metadata:
  name: ingress-https-only
spec:
  match:
    kinds:
    - apiGroups:
      - extensions
      - networking.k8s.io
      kinds:
      - Ingress
허용됨
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    kubernetes.io/ingress.allow-http: "false"
  name: ingress-demo-disallowed
spec:
  rules:
  - host: example-host.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              number: 80
        path: /
        pathType: Prefix
  tls:
  - {}
허용되지 않음
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-demo-disallowed
spec:
  rules:
  - host: example-host.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              number: 80
        path: /
        pathType: Prefix

K8sImageDigests

다이제스트를 포함할 컨테이너 이미지가 있어야 합니다. https://kubernetes.io/docs/concepts/containers/images/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sImageDigests
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>

예시

container-image-must-have-digest

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sImageDigests
metadata:
  name: container-image-must-have-digest
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
    namespaces:
    - default
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2@sha256:04ff8fce2afd1a3bc26260348e5b290e8d945b1fad4b4c16d22834c2f3a1814a
    name: opa
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
  initContainers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opainit
apiVersion: v1
kind: Pod
metadata:
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
  ephemeralContainers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
  initContainers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opainit

K8sLocalStorageRequireSafeToEvict

로컬 스토리지(emptyDir 또는 hostPath)를 사용하는 포드에 "cluster-autoscaler.kubernetes.io/safe-to-evict": "true" 주석이 포함되어야 합니다. 클러스터 자동 확장 처리는 이 주석이 없는 포드를 삭제하지 않습니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sLocalStorageRequireSafeToEvict
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

local-storage-require-safe-to-evict

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sLocalStorageRequireSafeToEvict
metadata:
  name: local-storage-require-safe-to-evict
허용됨
apiVersion: v1
kind: Pod
metadata:
  annotations:
    cluster-autoscaler.kubernetes.io/safe-to-evict: "true"
  name: good-pod
  namespace: default
spec:
  containers:
  - image: redis
    name: redis
    volumeMounts:
    - mountPath: /data/redis
      name: redis-storage
  volumes:
  - emptyDir: {}
    name: redis-storage
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: bad-pod
  namespace: default
spec:
  containers:
  - image: redis
    name: redis
    volumeMounts:
    - mountPath: /data/redis
      name: redis-storage
  volumes:
  - emptyDir: {}
    name: redis-storage

K8sMemoryRequestEqualsLimit

컨테이너의 요청된 메모리가 메모리 한도와 정확하게 동일하도록 요구함으로써 포드에서 메모리 사용량이 요청된 양을 초과하는 상태가 되지 않도록 포드 안정성을 향상시켜 줍니다. 그렇지 않으면 Kubernetes가 노드에 메모리가 필요한 경우 추가 메모리를 요청하는 포드를 종료할 수 있습니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sMemoryRequestEqualsLimit
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

container-must-request-limit

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sMemoryRequestEqualsLimit
metadata:
  name: container-must-request-limit
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: good-pod
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx
    resources:
      limits:
        cpu: 100m
        memory: 4Gi
      requests:
        cpu: 50m
        memory: 4Gi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: bad-pod
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx
    resources:
      limits:
        cpu: 100m
        memory: 4Gi
      requests:
        cpu: 50m
        memory: 2Gi

K8sNoEnvVarSecrets

포드 컨테이너 정의에서 보안 비밀을 환경 변수로 사용하는 것을 금지합니다. 그 대신 마운트된 보안 정보 파일을 데이터 볼륨에 사용하세요. https://kubernetes.io/docs/concepts/configuration/secret/#using-secrets-as-files-from-a-pod

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sNoEnvVarSecrets
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

no-secrets-as-env-vars-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sNoEnvVarSecrets
metadata:
  name: no-secrets-as-env-vars-sample
spec:
  enforcementAction: dryrun
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: allowed-example
spec:
  containers:
  - image: redis
    name: test
    volumeMounts:
    - mountPath: /etc/test
      name: test
      readOnly: true
  volumes:
  - name: test
    secret:
      secretName: mysecret
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: disallowed-example
spec:
  containers:
  - env:
    - name: MY_PASSWORD
      valueFrom:
        secretKeyRef:
          key: password
          name: mysecret
    image: redis
    name: test

K8sNoExternalServices

워크로드를 외부 IP로 노출하는 알려진 리소스 생성을 금지합니다. 여기에는 Istio 게이트웨이 리소스와 Kubernetes 인그레스 리소스가 포함됩니다. Kubernetes 서비스도 다음 기준을 충족하지 않으면 허용되지 않습니다. Google Cloud의 LoadBalancer 모든 유형 서비스에는 "cloud.google.com/load-balancer-type": "Internal" 주석이 있어야 합니다. AWS에서 LoadBalancer 유형의 모든 서비스에는 service.beta.kubernetes.io/aws-load-balancer-internal: "true 주석이 있어야 합니다. 서비스에 바인딩된 '외부 IP'는 제약조건에 제공된 대로 내부 CIDR 범위의 구성원이어야 합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sNoExternalServices
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # cloudPlatform <string>: The hosting cloud platform. Only `GCP` and `AWS`
    # are supported currently.
    cloudPlatform: <string>
    # internalCIDRs <array>: A list of CIDRs that are only accessible
    # internally, for example: `10.3.27.0/24`. Which IP ranges are
    # internal-only is determined by the underlying network infrastructure.
    internalCIDRs:
      - <string>

예시

no-external

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sNoExternalServices
metadata:
  name: no-external
spec:
  parameters:
    internalCIDRs:
    - 10.0.0.1/32
허용됨
apiVersion: v1
kind: Service
metadata:
  name: good-service
  namespace: default
spec:
  externalIPs:
  - 10.0.0.1
  ports:
  - port: 8888
    protocol: TCP
    targetPort: 8888
허용되지 않음
apiVersion: v1
kind: Service
metadata:
  name: bad-service
  namespace: default
spec:
  externalIPs:
  - 10.0.0.2
  ports:
  - port: 8888
    protocol: TCP
    targetPort: 8888

no-external-aws

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sNoExternalServices
metadata:
  name: no-external-aws
spec:
  parameters:
    cloudPlatform: AWS
허용됨
apiVersion: v1
kind: Service
metadata:
  annotations:
    service.beta.kubernetes.io/aws-load-balancer-internal: "true"
  name: good-aws-service
  namespace: default
spec:
  type: LoadBalancer
허용되지 않음
apiVersion: v1
kind: Service
metadata:
  annotations:
    cloud.google.com/load-balancer-type: Internal
  name: bad-aws-service
  namespace: default
spec:
  type: LoadBalancer

K8sPSPAllowPrivilegeEscalationContainer

루트 권한으로의 에스컬레이션 제한을 제어합니다. PodSecurityPolicy의 allowPrivilegeEscalation 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#privilege-escalation을 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAllowPrivilegeEscalationContainer
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>

예시

psp-allow-privilege-escalation-container-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAllowPrivilegeEscalationContainer
metadata:
  name: psp-allow-privilege-escalation-container-sample
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-privilege-escalation
  name: nginx-privilege-escalation-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      allowPrivilegeEscalation: false
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-privilege-escalation
  name: nginx-privilege-escalation-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      allowPrivilegeEscalation: true
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-privilege-escalation
  name: nginx-privilege-escalation-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    securityContext:
      allowPrivilegeEscalation: true

K8sPSPAllowedUsers

컨테이너의 사용자 및 그룹 ID와 일부 볼륨을 제어합니다. PodSecurityPolicy의 runAsUser, runAsGroup, supplementalGroups, fsGroup 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#users-and-groups를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAllowedUsers
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # fsGroup <object>: Controls the fsGroup values that are allowed in a Pod
    # or container-level SecurityContext.
    fsGroup:
      # ranges <array>: A list of group ID ranges affected by the rule.
      ranges:
        # <list item: object>: The range of group IDs affected by the rule.
        - # max <integer>: The maximum group ID in the range, inclusive.
          max: <integer>
          # min <integer>: The minimum group ID in the range, inclusive.
          min: <integer>
      # rule <string>: A strategy for applying the fsGroup restriction.
      # Allowed Values: MustRunAs, MayRunAs, RunAsAny
      rule: <string>
    # runAsGroup <object>: Controls which group ID values are allowed in a Pod
    # or container-level SecurityContext.
    runAsGroup:
      # ranges <array>: A list of group ID ranges affected by the rule.
      ranges:
        # <list item: object>: The range of group IDs affected by the rule.
        - # max <integer>: The maximum group ID in the range, inclusive.
          max: <integer>
          # min <integer>: The minimum group ID in the range, inclusive.
          min: <integer>
      # rule <string>: A strategy for applying the runAsGroup restriction.
      # Allowed Values: MustRunAs, MayRunAs, RunAsAny
      rule: <string>
    # runAsUser <object>: Controls which user ID values are allowed in a Pod or
    # container-level SecurityContext.
    runAsUser:
      # ranges <array>: A list of user ID ranges affected by the rule.
      ranges:
        # <list item: object>: The range of user IDs affected by the rule.
        - # max <integer>: The maximum user ID in the range, inclusive.
          max: <integer>
          # min <integer>: The minimum user ID in the range, inclusive.
          min: <integer>
      # rule <string>: A strategy for applying the runAsUser restriction.
      # Allowed Values: MustRunAs, MustRunAsNonRoot, RunAsAny
      rule: <string>
    # supplementalGroups <object>: Controls the supplementalGroups values that
    # are allowed in a Pod or container-level SecurityContext.
    supplementalGroups:
      # ranges <array>: A list of group ID ranges affected by the rule.
      ranges:
        # <list item: object>: The range of group IDs affected by the rule.
        - # max <integer>: The maximum group ID in the range, inclusive.
          max: <integer>
          # min <integer>: The minimum group ID in the range, inclusive.
          min: <integer>
      # rule <string>: A strategy for applying the supplementalGroups
      # restriction.
      # Allowed Values: MustRunAs, MayRunAs, RunAsAny
      rule: <string>

예시

psp-pods-allowed-user-ranges

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAllowedUsers
metadata:
  name: psp-pods-allowed-user-ranges
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    fsGroup:
      ranges:
      - max: 200
        min: 100
      rule: MustRunAs
    runAsGroup:
      ranges:
      - max: 200
        min: 100
      rule: MustRunAs
    runAsUser:
      ranges:
      - max: 200
        min: 100
      rule: MustRunAs
    supplementalGroups:
      ranges:
      - max: 200
        min: 100
      rule: MustRunAs
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-users
  name: nginx-users-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      runAsGroup: 199
      runAsUser: 199
  securityContext:
    fsGroup: 199
    supplementalGroups:
    - 199
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-users
  name: nginx-users-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      runAsGroup: 250
      runAsUser: 250
  securityContext:
    fsGroup: 250
    supplementalGroups:
    - 250
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-users
  name: nginx-users-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    securityContext:
      runAsGroup: 250
      runAsUser: 250
  securityContext:
    fsGroup: 250
    supplementalGroups:
    - 250

K8sPSPAppArmor

컨테이너에서 사용할 AppArmor 프로필 허용 목록을 구성합니다. PodSecurityPolicy에 적용된 특정 주석에 해당합니다. AppArmor에 대한 자세한 내용은 https://kubernetes.io/docs/tutorials/clusters/apparmor/를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAppArmor
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedProfiles <array>: An array of AppArmor profiles. Examples:
    # `runtime/default`, `unconfined`.
    allowedProfiles:
      - <string>
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>

예시

psp-apparmor

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAppArmor
metadata:
  name: psp-apparmor
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    allowedProfiles:
    - runtime/default
허용됨
apiVersion: v1
kind: Pod
metadata:
  annotations:
    container.apparmor.security.beta.kubernetes.io/nginx: runtime/default
  labels:
    app: nginx-apparmor
  name: nginx-apparmor-allowed
spec:
  containers:
  - image: nginx
    name: nginx
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  annotations:
    container.apparmor.security.beta.kubernetes.io/nginx: unconfined
  labels:
    app: nginx-apparmor
  name: nginx-apparmor-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
apiVersion: v1
kind: Pod
metadata:
  annotations:
    container.apparmor.security.beta.kubernetes.io/nginx: unconfined
  labels:
    app: nginx-apparmor
  name: nginx-apparmor-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx

K8sPSPAutomountServiceAccountTokenPod

모든 포드의 automountServiceAccountToken 사용 설정 기능을 제어합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAutomountServiceAccountTokenPod
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    <object>

예시

psp-automount-serviceaccount-token-pod

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPAutomountServiceAccountTokenPod
metadata:
  name: psp-automount-serviceaccount-token-pod
spec:
  match:
    excludedNamespaces:
    - kube-system
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-not-automountserviceaccounttoken
  name: nginx-automountserviceaccounttoken-allowed
spec:
  automountServiceAccountToken: false
  containers:
  - image: nginx
    name: nginx
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-automountserviceaccounttoken
  name: nginx-automountserviceaccounttoken-disallowed
spec:
  automountServiceAccountToken: true
  containers:
  - image: nginx
    name: nginx

K8sPSPCapabilities

컨테이너의 Linux 기능을 제어합니다. PodSecurityPolicy의 allowedCapabilitiesrequiredDropCapabilities 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#capabilities를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPCapabilities
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedCapabilities <array>: A list of Linux capabilities that can be
    # added to a container.
    allowedCapabilities:
      - <string>
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # requiredDropCapabilities <array>: A list of Linux capabilities that are
    # required to be dropped from a container.
    requiredDropCapabilities:
      - <string>

예시

capabilities-demo

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPCapabilities
metadata:
  name: capabilities-demo
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
    namespaces:
    - default
  parameters:
    allowedCapabilities:
    - something
    requiredDropCapabilities:
    - must_drop
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
    securityContext:
      capabilities:
        add:
        - something
        drop:
        - must_drop
        - another_one
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
    securityContext:
      capabilities:
        add:
        - disallowedcapability
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  ephemeralContainers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 30Mi
    securityContext:
      capabilities:
        add:
        - disallowedcapability

K8sPSPFSGroup

포드 볼륨을 소유한 FSGroup 할당을 제어합니다. PodSecurityPolicy의 fsGroup 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#volumes-and-file-systems를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPFSGroup
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # ranges <array>: GID ranges affected by the rule.
    ranges:
      - # max <integer>: The maximum GID in the range, inclusive.
        max: <integer>
        # min <integer>: The minimum GID in the range, inclusive.
        min: <integer>
    # rule <string>: An FSGroup rule name.
    # Allowed Values: MayRunAs, MustRunAs, RunAsAny
    rule: <string>

예시

psp-fsgroup

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPFSGroup
metadata:
  name: psp-fsgroup
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    ranges:
    - max: 1000
      min: 1
    rule: MayRunAs
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: fsgroup-disallowed
spec:
  containers:
  - command:
    - sh
    - -c
    - sleep 1h
    image: busybox
    name: fsgroup-demo
    volumeMounts:
    - mountPath: /data/demo
      name: fsgroup-demo-vol
  securityContext:
    fsGroup: 500
  volumes:
  - emptyDir: {}
    name: fsgroup-demo-vol
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: fsgroup-disallowed
spec:
  containers:
  - command:
    - sh
    - -c
    - sleep 1h
    image: busybox
    name: fsgroup-demo
    volumeMounts:
    - mountPath: /data/demo
      name: fsgroup-demo-vol
  securityContext:
    fsGroup: 2000
  volumes:
  - emptyDir: {}
    name: fsgroup-demo-vol

K8sPSPFlexVolumes

FlexVolume 드라이버의 허용 목록을 제어합니다. PodSecurityPolicy의 allowedFlexVolumes 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#flexvolume-drivers를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPFlexVolumes
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedFlexVolumes <array>: An array of AllowedFlexVolume objects.
    allowedFlexVolumes:
      - # driver <string>: The name of the FlexVolume driver.
        driver: <string>

예시

psp-flexvolume-drivers

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPFlexVolumes
metadata:
  name: psp-flexvolume-drivers
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    allowedFlexVolumes:
    - driver: example/lvm
    - driver: example/cifs
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-flexvolume-driver
  name: nginx-flexvolume-driver-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /test
      name: test-volume
      readOnly: true
  volumes:
  - flexVolume:
      driver: example/lvm
    name: test-volume
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-flexvolume-driver
  name: nginx-flexvolume-driver-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /test
      name: test-volume
      readOnly: true
  volumes:
  - flexVolume:
      driver: example/testdriver
    name: test-volume

K8sPSPForbiddenSysctls

컨테이너에 사용되는 sysctl 프로필을 제어합니다. PodSecurityPolicy의 forbiddenSysctls 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPForbiddenSysctls
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # forbiddenSysctls <array>: A disallow-list of sysctls. `*` forbids all
    # sysctls.
    forbiddenSysctls:
      - <string>

예시

psp-forbidden-sysctls

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPForbiddenSysctls
metadata:
  name: psp-forbidden-sysctls
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    forbiddenSysctls:
    - kernel.*
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-forbidden-sysctls
  name: nginx-forbidden-sysctls-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
  securityContext:
    sysctls:
    - name: net.core.somaxconn
      value: "1024"
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-forbidden-sysctls
  name: nginx-forbidden-sysctls-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
  securityContext:
    sysctls:
    - name: kernel.msgmax
      value: "65536"
    - name: net.core.somaxconn
      value: "1024"

K8sPSPHostFilesystem

호스트 파일 시스템 사용량을 제어합니다. PodSecurityPolicy의 allowedHostPaths 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#volumes-and-file-systems를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPHostFilesystem
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedHostPaths <array>: An array of hostpath objects, representing
    # paths and read/write configuration.
    allowedHostPaths:
      - # pathPrefix <string>: The path prefix that the host volume must
        # match.
        pathPrefix: <string>
        # readOnly <boolean>: when set to true, any container volumeMounts
        # matching the pathPrefix must include `readOnly: true`.
        readOnly: <boolean>

예시

psp-host-filesystem

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPHostFilesystem
metadata:
  name: psp-host-filesystem
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    allowedHostPaths:
    - pathPrefix: /foo
      readOnly: true
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-filesystem-disallowed
  name: nginx-host-filesystem
spec:
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
      readOnly: true
  volumes:
  - hostPath:
      path: /foo/bar
    name: cache-volume
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-filesystem-disallowed
  name: nginx-host-filesystem
spec:
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
      readOnly: true
  volumes:
  - hostPath:
      path: /tmp
    name: cache-volume
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-filesystem-disallowed
  name: nginx-host-filesystem
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
      readOnly: true
  volumes:
  - hostPath:
      path: /tmp
    name: cache-volume

K8sPSPHostNamespace

포드 컨테이너별로 호스트 PID 및 IPC 네임스페이스를 공유할 수 없습니다. PodSecurityPolicy의 hostPIDhostIPC 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#host-namespaces를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPHostNamespace
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    <object>

예시

psp-host-namespace-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPHostNamespace
metadata:
  name: psp-host-namespace-sample
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-namespace
  name: nginx-host-namespace-allowed
spec:
  containers:
  - image: nginx
    name: nginx
  hostIPC: false
  hostPID: false
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-namespace
  name: nginx-host-namespace-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
  hostIPC: true
  hostPID: true

K8sPSPHostNetworkingPorts

포드 컨테이너로 호스트 네트워크 네임스페이스 사용을 제어합니다. 특정 포트를 지정해야 합니다. PodSecurityPolicy의 hostNetworkhostPorts 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#host-namespaces를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPHostNetworkingPorts
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # hostNetwork <boolean>: Determines if the policy allows the use of
    # HostNetwork in the pod spec.
    hostNetwork: <boolean>
    # max <integer>: The end of the allowed port range, inclusive.
    max: <integer>
    # min <integer>: The start of the allowed port range, inclusive.
    min: <integer>

예시

psp-host-network-ports-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPHostNetworkingPorts
metadata:
  name: psp-host-network-ports-sample
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    hostNetwork: true
    max: 9000
    min: 80
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-networking-ports
  name: nginx-host-networking-ports-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 9000
      hostPort: 80
  hostNetwork: false
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-networking-ports
  name: nginx-host-networking-ports-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 9001
      hostPort: 9001
  hostNetwork: true
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-host-networking-ports
  name: nginx-host-networking-ports-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 9001
      hostPort: 9001
  hostNetwork: true

K8sPSPPrivilegedContainer

컨테이너에서 권한 모드를 사용 설정하는 기능을 제어합니다. PodSecurityPolicy의 privileged 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#privileged를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPPrivilegedContainer
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>

예시

psp-privileged-container-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPPrivilegedContainer
metadata:
  name: psp-privileged-container-sample
spec:
  match:
    excludedNamespaces:
    - kube-system
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-privileged
  name: nginx-privileged-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      privileged: false
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-privileged
  name: nginx-privileged-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      privileged: true
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-privileged
  name: nginx-privileged-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    securityContext:
      privileged: true

K8sPSPProcMount

컨테이너에 허용되는 procMount 유형을 제어합니다. PodSecurityPolicy의 allowedProcMountTypes 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#allowedprocmounttypes를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPProcMount
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # procMount <string>: Defines the strategy for the security exposure of
    # certain paths in `/proc` by the container runtime. Setting to `Default`
    # uses the runtime defaults, where `Unmasked` bypasses the default
    # behavior.
    # Allowed Values: Default, Unmasked
    procMount: <string>

예시

psp-proc-mount

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPProcMount
metadata:
  name: psp-proc-mount
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    procMount: Default
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-proc-mount
  name: nginx-proc-mount-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      procMount: Default
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-proc-mount
  name: nginx-proc-mount-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      procMount: Unmasked
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-proc-mount
  name: nginx-proc-mount-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    securityContext:
      procMount: Unmasked

K8sPSPReadOnlyRootFilesystem

포드 컨테이너에서 읽기 전용 루트 파일 시스템을 사용해야 합니다. PodSecurityPolicy의 readOnlyRootFilesystem 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#volumes-and-file-systems를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPReadOnlyRootFilesystem
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>

예시

psp-readonlyrootfilesystem

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPReadOnlyRootFilesystem
metadata:
  name: psp-readonlyrootfilesystem
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-readonlyrootfilesystem
  name: nginx-readonlyrootfilesystem-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      readOnlyRootFilesystem: true
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-readonlyrootfilesystem
  name: nginx-readonlyrootfilesystem-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      readOnlyRootFilesystem: false
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-readonlyrootfilesystem
  name: nginx-readonlyrootfilesystem-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    securityContext:
      readOnlyRootFilesystem: false

K8sPSPSELinuxV2

포드 컨테이너의 seLinuxOptions 구성 허용 목록을 정의합니다. SELinux 구성이 필요한 PodSecurityPolicy에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#selinux를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPSELinuxV2
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedSELinuxOptions <array>: An allow-list of SELinux options
    # configurations.
    allowedSELinuxOptions:
      # <list item: object>: An allowed configuration of SELinux options for a
      # pod container.
      - # level <string>: An SELinux level.
        level: <string>
        # role <string>: An SELinux role.
        role: <string>
        # type <string>: An SELinux type.
        type: <string>
        # user <string>: An SELinux user.
        user: <string>
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>

예시

psp-selinux-v2

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPSELinuxV2
metadata:
  name: psp-selinux-v2
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    allowedSELinuxOptions:
    - level: s0:c123,c456
      role: object_r
      type: svirt_sandbox_file_t
      user: system_u
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-selinux
  name: nginx-selinux-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      seLinuxOptions:
        level: s0:c123,c456
        role: object_r
        type: svirt_sandbox_file_t
        user: system_u
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-selinux
  name: nginx-selinux-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      seLinuxOptions:
        level: s1:c234,c567
        role: sysadm_r
        type: svirt_lxc_net_t
        user: sysadm_u
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-selinux
  name: nginx-selinux-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx
    securityContext:
      seLinuxOptions:
        level: s1:c234,c567
        role: sysadm_r
        type: svirt_lxc_net_t
        user: sysadm_u

K8sPSPSeccomp

컨테이너에 사용되는 seccomp 프로필을 제어합니다. PodSecurityPolicy의 seccomp.security.alpha.kubernetes.io/allowedProfileNames 주석에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#seccomp를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPSeccomp
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedLocalhostFiles <array>: When using securityContext naming scheme
    # for seccomp and including `Localhost` this array holds the allowed
    # profile JSON files. Putting a `*` in this array will allows all JSON
    # files to be used. This field is required to allow `Localhost` in
    # securityContext as with an empty list it will block.
    allowedLocalhostFiles:
      - <string>
    # allowedProfiles <array>: An array of allowed profile values for seccomp
    # on Pods/Containers. Can use the annotation naming scheme:
    # `runtime/default`, `docker/default`, `unconfined` and/or
    # `localhost/some-profile.json`. The item `localhost/*` will allow any
    # localhost based profile. Can also use the securityContext naming scheme:
    # `RuntimeDefault`, `Unconfined` and/or `Localhost`. For securityContext
    # `Localhost`, use the parameter `allowedLocalhostProfiles` to list the
    # allowed profile JSON files. The policy code will translate between the
    # two schemes so it is not necessary to use both. Putting a `*` in this
    # array allows all Profiles to be used. This field is required since with
    # an empty list this policy will block all workloads.
    allowedProfiles:
      - <string>
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>

예시

psp-seccomp

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPSeccomp
metadata:
  name: psp-seccomp
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    allowedProfiles:
    - runtime/default
    - docker/default
허용됨
apiVersion: v1
kind: Pod
metadata:
  annotations:
    container.seccomp.security.alpha.kubernetes.io/nginx: runtime/default
  labels:
    app: nginx-seccomp
  name: nginx-seccomp-allowed
spec:
  containers:
  - image: nginx
    name: nginx
apiVersion: v1
kind: Pod
metadata:
  annotations:
    seccomp.security.alpha.kubernetes.io/pod: runtime/default
  labels:
    app: nginx-seccomp
  name: nginx-seccomp-allowed2
spec:
  containers:
  - image: nginx
    name: nginx
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  annotations:
    seccomp.security.alpha.kubernetes.io/pod: unconfined
  labels:
    app: nginx-seccomp
  name: nginx-seccomp-disallowed2
spec:
  containers:
  - image: nginx
    name: nginx
apiVersion: v1
kind: Pod
metadata:
  annotations:
    container.seccomp.security.alpha.kubernetes.io/nginx: unconfined
  labels:
    app: nginx-seccomp
  name: nginx-seccomp-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
apiVersion: v1
kind: Pod
metadata:
  annotations:
    container.seccomp.security.alpha.kubernetes.io/nginx: unconfined
  labels:
    app: nginx-seccomp
  name: nginx-seccomp-disallowed
spec:
  ephemeralContainers:
  - image: nginx
    name: nginx

K8sPSPVolumeTypes

마운트 가능한 볼륨 유형을 사용자가 지정한 유형으로 제한합니다. PodSecurityPolicy의 volumes 필드에 해당합니다. 자세한 내용은 https://kubernetes.io/docs/concepts/policy/pod-security-policy/#volumes-and-file-systems를 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPVolumeTypes
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # volumes <array>: `volumes` is an array of volume types. All volume types
    # can be enabled using `*`.
    volumes:
      - <string>

예시

psp-volume-types

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPSPVolumeTypes
metadata:
  name: psp-volume-types
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    volumes:
    - configMap
    - emptyDir
    - projected
    - secret
    - downwardAPI
    - persistentVolumeClaim
    - flexVolume
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-volume-types
  name: nginx-volume-types-allowed
spec:
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
  - image: nginx
    name: nginx2
    volumeMounts:
    - mountPath: /cache2
      name: demo-vol
  volumes:
  - emptyDir: {}
    name: cache-volume
  - emptyDir: {}
    name: demo-vol
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx-volume-types
  name: nginx-volume-types-disallowed
spec:
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
  - image: nginx
    name: nginx2
    volumeMounts:
    - mountPath: /cache2
      name: demo-vol
  volumes:
  - hostPath:
      path: /tmp
    name: cache-volume
  - emptyDir: {}
    name: demo-vol

K8sPodDisruptionBudget

PodDisruptionBudget 또는 복제본 하위 리소스를 구현하는 리소스(예: Deployment, ReplicationController, ReplicaSet, StatefulSet)를 배포할 때 다음 시나리오를 허용하지 않음: 1. .spec.maxUnavailable == 0인 PodDisruptionBudget의 배포 2. 복제본 하위 리소스가 있는 리소스에서 .spec.minAvailable == .spec.replicas인 PodPodruruBudget의 배포. 이는 PodDisruptionBudget이 노드 드레이닝과 같은 자발적 중단을 차단하지 않도록 합니다. https://kubernetes.io/docs/concepts/workloads/pods/disruptions/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPodDisruptionBudget
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

Examples

pod-distruption-budget

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPodDisruptionBudget
metadata:
  name: pod-distruption-budget
spec:
  match:
    kinds:
    - apiGroups:
      - apps
      kinds:
      - Deployment
      - ReplicaSet
      - StatefulSet
    - apiGroups:
      - policy
      kinds:
      - PodDisruptionBudget
    - apiGroups:
      - ""
      kinds:
      - ReplicationController
허용됨
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: nginx-pdb-allowed
  namespace: default
spec:
  maxUnavailable: 1
  selector:
    matchLabels:
      foo: bar
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: nginx
  name: nginx-deployment-allowed-1
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
      example: allowed-deployment-1
  template:
    metadata:
      labels:
        app: nginx
        example: allowed-deployment-1
    spec:
      containers:
      - image: nginx:1.14.2
        name: nginx
        ports:
        - containerPort: 80
---
# Referential Data
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: inventory-nginx-pdb-allowed-1
  namespace: default
spec:
  minAvailable: 2
  selector:
    matchLabels:
      app: nginx
      example: allowed-deployment-1
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: nginx
  name: nginx-deployment-allowed-2
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
      example: allowed-deployment-2
  template:
    metadata:
      labels:
        app: nginx
        example: allowed-deployment-2
    spec:
      containers:
      - image: nginx:1.14.2
        name: nginx
        ports:
        - containerPort: 80
---
# Referential Data
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: inventory-nginx-pdb-allowed-2
  namespace: default
spec:
  maxUnavailable: 1
  selector:
    matchLabels:
      app: nginx
      example: allowed-deployment-2
허용되지 않음
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: nginx-pdb-disallowed
  namespace: default
spec:
  maxUnavailable: 0
  selector:
    matchLabels:
      foo: bar
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: nginx
  name: nginx-deployment-disallowed
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
      example: disallowed-deployment
  template:
    metadata:
      labels:
        app: nginx
        example: disallowed-deployment
    spec:
      containers:
      - image: nginx:1.14.2
        name: nginx
        ports:
        - containerPort: 80
---
# Referential Data
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: inventory-nginx-pdb-disallowed
  namespace: default
spec:
  minAvailable: 3
  selector:
    matchLabels:
      app: nginx
      example: disallowed-deployment

K8sPodsRequireSecurityContext

모든 포드에서 securityContext를 정의해야 합니다. 포드에 정의된 모든 컨테이너에 포드 또는 컨테이너 수준에서 정의된 SecurityContext가 있어야 합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPodsRequireSecurityContext
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

pods-require-security-context-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sPodsRequireSecurityContext
metadata:
  name: pods-require-security-context-sample
spec:
  enforcementAction: dryrun
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: allowed-example
spec:
  containers:
  - image: nginx
    name: nginx
    securityContext:
      runAsUser: 2000
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: disallowed-example
spec:
  containers:
  - image: nginx
    name: nginx

K8sProhibitRoleWildcardAccess

Roles 및 ClusterRoles이 예외적으로 제외된 Roles 및 ClusterRoles를 제외하고 리소스 액세스를 와일드 카드('') 값으로 설정하지 않도록 해야 합니다. '/status'와 같은 하위 리소스까지 와일드 카드 액세스를 제한하지 않습니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sProhibitRoleWildcardAccess
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptions <object>: The list of exempted Roles and/or ClusterRoles name
    # that are allowed to set  resource access to a wildcard.
    exemptions:
      clusterRoles:
        - # name <string>: The name of the ClusterRole to be exempted.
          name: <string>
          # regexMatch <boolean>: The flag to allow a regular expression
          # based match on the name.
          regexMatch: <boolean>
      roles:
        - # name <string>: The name of the Role to be exempted.
          name: <string>
          # namespace <string>: The namespace of the Role to be exempted.
          namespace: <string>

예시

prohibit-role-wildcard-access-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sProhibitRoleWildcardAccess
metadata:
  name: prohibit-role-wildcard-access-sample
spec:
  enforcementAction: dryrun
허용됨
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: cluster-role-example
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - get
허용되지 않음
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: cluster-role-bad-example
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - '*'

prohibit-wildcard-except-exempted-cluster-role

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sProhibitRoleWildcardAccess
metadata:
  name: prohibit-wildcard-except-exempted-cluster-role
spec:
  enforcementAction: dryrun
  parameters:
    exemptions:
      clusterRoles:
      - name: cluster-role-allowed-example
      roles:
      - name: role-allowed-example
        namespace: role-ns-allowed-example
허용됨
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: cluster-role-allowed-example
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - '*'
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: role-allowed-example
  namespace: role-ns-allowed-example
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - '*'
허용되지 않음
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: cluster-role-not-allowed-example
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - '*'
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: role-not-allowed-example
  namespace: role-ns-not-allowed-example
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - '*'

K8sReplicaLimits

spec.replicas 필드가 있는 객체(Deployments, ReplicaSets 등)가 정의된 범위 내에 있는 복제본 수를 지정해야 합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sReplicaLimits
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # ranges <array>: Allowed ranges for numbers of replicas.  Values are
    # inclusive.
    ranges:
      # <list item: object>: A range of allowed replicas.  Values are
      # inclusive.
      - # max_replicas <integer>: The maximum number of replicas allowed,
        # inclusive.
        max_replicas: <integer>
        # min_replicas <integer>: The minimum number of replicas allowed,
        # inclusive.
        min_replicas: <integer>

예시

replica-limits

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sReplicaLimits
metadata:
  name: replica-limits
spec:
  match:
    kinds:
    - apiGroups:
      - apps
      kinds:
      - Deployment
  parameters:
    ranges:
    - max_replicas: 50
      min_replicas: 3
허용됨
apiVersion: apps/v1
kind: Deployment
metadata:
  name: allowed-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - image: nginx:1.14.2
        name: nginx
        ports:
        - containerPort: 80
허용되지 않음
apiVersion: apps/v1
kind: Deployment
metadata:
  name: disallowed-deployment
spec:
  replicas: 100
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - image: nginx:1.14.2
        name: nginx
        ports:
        - containerPort: 80

K8sRequireCosNodeImage

노드에서 Google의 Container-Optimized OS를 사용합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequireCosNodeImage
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

Examples

nodes-have-consistent-time

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequireCosNodeImage
metadata:
  name: nodes-have-consistent-time
spec:
  enforcementAction: dryrun
허용됨
apiVersion: v1
kind: Node
metadata:
  name: allowed-example
status:
  nodeInfo:
    osImage: Container-Optimized OS from Google
허용되지 않음
apiVersion: v1
kind: Node
metadata:
  name: disallowed-example
status:
  nodeInfo:
    osImage: Debian GNUv1.0

K8sRequireNamespaceNetworkPolicies

클러스터에 정의된 모든 네임스페이스에 NetworkPolicy가 있어야 합니다. 참고: 이 제약조건은 참조입니다. 자세한 내용은 https://cloud.google.com/anthos-config-management/docs/how-to/creating-constraints#referential을 참조하세요.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequireNamespaceNetworkPolicies
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

require-namespace-network-policies-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequireNamespaceNetworkPolicies
metadata:
  name: require-namespace-network-policies-sample
spec:
  enforcementAction: dryrun
허용됨
apiVersion: v1
kind: Namespace
metadata:
  name: require-namespace-network-policies-example
---
# Referential Data
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: test-network-policy
  namespace: require-namespace-network-policies-example
허용되지 않음
apiVersion: v1
kind: Namespace
metadata:
  name: require-namespace-network-policies-example

K8sRequiredAnnotations

리소스가 제공된 정규 표현식과 일치하는 값으로 지정된 주석을 포함하도록 요구합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredAnnotations
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # annotations <array>: A list of annotations and values the object must
    # specify.
    annotations:
      - # allowedRegex <string>: If specified, a regular expression the
        # annotation's value must match. The value must contain at least one
        # match for the regular expression.
        allowedRegex: <string>
        # key <string>: The required annotation.
        key: <string>
    message: <string>

예시

all-must-have-certain-set-of-annotations

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredAnnotations
metadata:
  name: all-must-have-certain-set-of-annotations
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Service
  parameters:
    annotations:
    - allowedRegex: ^([A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}|[a-z]{1,39})$
      key: a8r.io/owner
    - allowedRegex: ^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$
      key: a8r.io/runbook
    message: All services must have a `a8r.io/owner` and `a8r.io/runbook` annotations.
허용됨
apiVersion: v1
kind: Service
metadata:
  annotations:
    a8r.io/owner: dev-team-alfa@contoso.com
    a8r.io/runbook: https://confluence.contoso.com/dev-team-alfa/runbooks
  name: allowed-service
spec:
  ports:
  - name: http
    port: 80
    targetPort: 8080
  selector:
    app: foo
허용되지 않음
apiVersion: v1
kind: Service
metadata:
  name: disallowed-service
spec:
  ports:
  - name: http
    port: 80
    targetPort: 8080
  selector:
    app: foo

K8sRequiredLabels

리소스가 제공된 정규 표현식과 일치하는 값으로 지정된 라벨을 포함하도록 요구합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredLabels
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # labels <array>: A list of labels and values the object must specify.
    labels:
      - # allowedRegex <string>: If specified, a regular expression the
        # annotation's value must match. The value must contain at least one
        # match for the regular expression.
        allowedRegex: <string>
        # key <string>: The required label.
        key: <string>
    message: <string>

예시

all-must-have-owner

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredLabels
metadata:
  name: all-must-have-owner
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Namespace
  parameters:
    labels:
    - allowedRegex: ^[a-zA-Z]+.agilebank.demo$
      key: owner
    message: All namespaces must have an `owner` label that points to your company
      username
허용됨
apiVersion: v1
kind: Namespace
metadata:
  labels:
    owner: user.agilebank.demo
  name: allowed-namespace
허용되지 않음
apiVersion: v1
kind: Namespace
metadata:
  name: disallowed-namespace

K8sRequiredProbes

포드에 준비 상태 또는 활성 프로브가 있어야 합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredProbes
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # probeTypes <array>: The probe must define a field listed in `probeType`
    # in order to satisfy the constraint (ex. `tcpSocket` satisfies
    # `['tcpSocket', 'exec']`)
    probeTypes:
      - <string>
    # probes <array>: A list of probes that are required (ex: `readinessProbe`)
    probes:
      - <string>

예시

must-have-probes

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredProbes
metadata:
  name: must-have-probes
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    probeTypes:
    - tcpSocket
    - httpGet
    - exec
    probes:
    - readinessProbe
    - livenessProbe
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: test-pod1
spec:
  containers:
  - image: tomcat
    livenessProbe:
      initialDelaySeconds: 5
      periodSeconds: 10
      tcpSocket:
        port: 80
    name: tomcat
    ports:
    - containerPort: 8080
    readinessProbe:
      initialDelaySeconds: 5
      periodSeconds: 10
      tcpSocket:
        port: 8080
  volumes:
  - emptyDir: {}
    name: cache-volume
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: test-pod1
spec:
  containers:
  - image: nginx:1.7.9
    name: nginx-1
    ports:
    - containerPort: 80
    volumeMounts:
    - mountPath: /tmp/cache
      name: cache-volume
  - image: tomcat
    name: tomcat
    ports:
    - containerPort: 8080
    readinessProbe:
      initialDelaySeconds: 5
      periodSeconds: 10
      tcpSocket:
        port: 8080
  volumes:
  - emptyDir: {}
    name: cache-volume
apiVersion: v1
kind: Pod
metadata:
  name: test-pod2
spec:
  containers:
  - image: nginx:1.7.9
    livenessProbe:
      initialDelaySeconds: 5
      periodSeconds: 10
      tcpSocket:
        port: 80
    name: nginx-1
    ports:
    - containerPort: 80
    volumeMounts:
    - mountPath: /tmp/cache
      name: cache-volume
  - image: tomcat
    name: tomcat
    ports:
    - containerPort: 8080
    readinessProbe:
      initialDelaySeconds: 5
      periodSeconds: 10
      tcpSocket:
        port: 8080
  volumes:
  - emptyDir: {}
    name: cache-volume

K8sRequiredResources

컨테이너에 정의된 리소스를 설정해야 합니다. https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredResources
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exemptImages <array>: Any container that uses an image that matches an
    # entry in this list will be excluded from enforcement. Prefix-matching can
    # be signified with `*`. For example: `my-image-*`. It is recommended that
    # users use the fully-qualified Docker image name (e.g. start with a domain
    # name) in order to avoid unexpectedly exempting images from an untrusted
    # repository.
    exemptImages:
      - <string>
    # limits <array>: A list of limits that should be enforced (cpu, memory or
    # both).
    limits:
      # Allowed Values: cpu, memory
      - <string>
    # requests <array>: A list of requests that should be enforced (cpu, memory
    # or both).
    requests:
      # Allowed Values: cpu, memory
      - <string>

Examples

container-must-have-limits-and-requests

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredResources
metadata:
  name: container-must-have-limits-and-requests
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    limits:
    - cpu
    - memory
    requests:
    - cpu
    - memory
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 1Gi
      requests:
        cpu: 100m
        memory: 1Gi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      requests:
        cpu: 100m
        memory: 2Gi
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        memory: 2Gi
      requests:
        cpu: 100m
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        memory: 2Gi

container-must-have-cpu-requests-memory-limits-and-requests

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredResources
metadata:
  name: container-must-have-cpu-requests-memory-limits-and-requests
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    limits:
    - memory
    requests:
    - cpu
    - memory
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 1Gi
      requests:
        cpu: 100m
        memory: 1Gi
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        memory: 2Gi
      requests:
        cpu: 100m
        memory: 2Gi
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      requests:
        cpu: 100m
        memory: 2Gi
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        memory: 2Gi
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources: {}

no-enforcements

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRequiredResources
metadata:
  name: no-enforcements
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-allowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        cpu: 100m
        memory: 1Gi
      requests:
        cpu: 100m
        memory: 1Gi
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      requests:
        cpu: 100m
        memory: 2Gi
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources:
      limits:
        memory: 2Gi
      requests:
        cpu: 100m
apiVersion: v1
kind: Pod
metadata:
  labels:
    owner: me.agilebank.demo
  name: opa-disallowed
spec:
  containers:
  - args:
    - run
    - --server
    - --addr=localhost:8080
    image: openpolicyagent/opa:0.9.2
    name: opa
    resources: {}

K8sRestrictLabels

특정 리소스에 대한 예외가 없으면 리소스에 지정된 라벨이 포함되지 않도록 합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictLabels
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # exceptions <array>: Objects listed here are exempt from enforcement of
    # this constraint. All fields must be provided.
    exceptions:
      # <list item: object>: A single object's identification, based on group,
      # kind, namespace, and name.
      - # group <string>: The Kubernetes group of the exempt object.
        group: <string>
        # kind <string>: The Kubernetes kind of the exempt object.
        kind: <string>
        # name <string>: The name of the exempt object.
        name: <string>
        # namespace <string>: The namespace of the exempt object. For
        # cluster-scoped resources, use the empty string `""`.
        namespace: <string>
    # restrictedLabels <array>: A list of label keys strings.
    restrictedLabels:
      - <string>

예시

restrict-label-example

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictLabels
metadata:
  name: restrict-label-example
spec:
  enforcementAction: dryrun
  parameters:
    exceptions:
    - group: ""
      kind: Pod
      name: allowed-example
      namespace: default
    restrictedLabels:
    - label-example
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    label-example: example
  name: allowed-example
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  labels:
    label-example: example
  name: disallowed-example
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx

K8sRestrictNamespaces

리소스가 restrictedNamespaces 매개변수에 나열된 네임스페이스를 사용하지 못하도록 제한합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictNamespaces
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # restrictedNamespaces <array>: A list of Namespaces to restrict.
    restrictedNamespaces:
      - <string>

예시

restrict-default-namespace-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictNamespaces
metadata:
  name: restrict-default-namespace-sample
spec:
  enforcementAction: dryrun
  parameters:
    restrictedNamespaces:
    - default
허용됨
apiVersion: v1
kind: Pod
metadata:
  name: allowed-example
  namespace: test-namespace
spec:
  containers:
  - image: nginx
    name: nginx
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  name: disallowed-example
  namespace: default
spec:
  containers:
  - image: nginx
    name: nginx

K8sRestrictRoleBindings

ClusterRoleBindings 및 RoleBindings에 지정된 대상을 허용되는 대상 목록으로 제한합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictRoleBindings
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedSubjects <array>: The list of subjects that are allowed to bind to
    # the restricted role.
    allowedSubjects:
      - # apiGroup <string>: The Kubernetes API group of the subject.
        apiGroup: <string>
        # kind <string>: The Kubernetes kind of the subject.
        kind: <string>
        # name <string>: The name of the subject which is matched exactly as
        # provided as well as based on a regular expression.
        name: <string>
        # regexMatch <boolean>: The flag to allow a regular expression based
        # match on the name.
        regexMatch: <boolean>
    # restrictedRole <object>: The role that cannot be bound to unless
    # expressly allowed.
    restrictedRole:
      # apiGroup <string>: The Kubernetes API group of the role.
      apiGroup: <string>
      # kind <string>: The Kubernetes kind of the role.
      kind: <string>
      # name <string>: The name of the role.
      name: <string>

예시

restrict-clusteradmin-rolebindings-sample

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictRoleBindings
metadata:
  name: restrict-clusteradmin-rolebindings-sample
spec:
  enforcementAction: dryrun
  parameters:
    allowedSubjects:
    - apiGroup: rbac.authorization.k8s.io
      kind: Group
      name: system:masters
    restrictedRole:
      apiGroup: rbac.authorization.k8s.io
      kind: ClusterRole
      name: cluster-admin
허용됨
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: good-clusterrolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:masters
허용되지 않음
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: bad-clusterrolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:unauthenticated

restrict-clusteradmin-rolebindings-regex

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sRestrictRoleBindings
metadata:
  name: restrict-clusteradmin-rolebindings-regex
spec:
  enforcementAction: dryrun
  parameters:
    allowedSubjects:
    - apiGroup: rbac.authorization.k8s.io
      kind: User
      name: ^service-[0-9]+@gcp-sa-anthosconfigmanagement.iam.gserviceaccount.com$
      regexMatch: true
    restrictedRole:
      apiGroup: rbac.authorization.k8s.io
      kind: ClusterRole
      name: cluster-admin
허용됨
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: good-clusterrolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: service-123456789@gcp-sa-anthosconfigmanagement.iam.gserviceaccount.com
허용되지 않음
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: bad-clusterrolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: someotherservice-123456789@gcp-sa-anthosconfigmanagement.iam.gserviceaccount.com

K8sUniqueIngressHost

모든 인그레스 규칙 호스트가 고유해야 합니다. 호스트 이름 와일드 카드를 처리하지 않습니다. https://kubernetes.io/docs/concepts/services-networking/ingress/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sUniqueIngressHost
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

unique-ingress-host

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sUniqueIngressHost
metadata:
  name: unique-ingress-host
spec:
  match:
    kinds:
    - apiGroups:
      - extensions
      - networking.k8s.io
      kinds:
      - Ingress
허용됨
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-host-allowed
  namespace: default
spec:
  rules:
  - host: example-host.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              number: 80
        path: /
        pathType: Prefix
  - host: example-host1.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx2
            port:
              number: 80
        path: /
        pathType: Prefix
허용되지 않음
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-host-disallowed
  namespace: default
spec:
  rules:
  - host: example-host.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              number: 80
        path: /
        pathType: Prefix
---
# Referential Data
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-host-example
  namespace: default
spec:
  rules:
  - host: example-host.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              number: 80
        path: /
        pathType: Prefix
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-host-disallowed2
  namespace: default
spec:
  rules:
  - host: example-host2.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              number: 80
        path: /
        pathType: Prefix
  - host: example-host3.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx2
            port:
              number: 80
        path: /
        pathType: Prefix
---
# Referential Data
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-host-example2
  namespace: default
spec:
  rules:
  - host: example-host2.example.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              number: 80
        path: /
        pathType: Prefix

K8sUniqueServiceSelector

서비스에 네임스페이스 내에서 고유한 선택기가 있어야 합니다. 선택기가 키와 값이 동일한 경우 동일한 선택기로 간주됩니다. 선택기는 별개의 키-값 쌍이 하나 이상 있는 한 키-값 쌍을 공유할 수 있습니다. https://kubernetes.io/docs/concepts/services-networking/service/#defining-a-service

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sUniqueServiceSelector
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

unique-service-selector

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: K8sUniqueServiceSelector
metadata:
  labels:
    owner: admin.agilebank.demo
  name: unique-service-selector
허용됨
apiVersion: v1
kind: Service
metadata:
  name: gatekeeper-test-service-disallowed
  namespace: default
spec:
  ports:
  - port: 443
  selector:
    key: other-value
허용되지 않음
apiVersion: v1
kind: Service
metadata:
  name: gatekeeper-test-service-disallowed
  namespace: default
spec:
  ports:
  - port: 443
  selector:
    key: value
---
# Referential Data
apiVersion: v1
kind: Service
metadata:
  name: gatekeeper-test-service-example
  namespace: default
spec:
  ports:
  - port: 443
  selector:
    key: value

NoUpdateServiceAccount

포드를 추상화하는 리소스에서 서비스 계정 업데이트를 차단합니다. 이 정책은 감사 모드에서 무시됩니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: NoUpdateServiceAccount
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedGroups <array>: Groups that should be allowed to bypass the
    # policy.
    allowedGroups:
      - <string>
    # allowedUsers <array>: Users that should be allowed to bypass the policy.
    allowedUsers:
      - <string>

Examples

no-update-kube-system-service-account

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: NoUpdateServiceAccount
metadata:
  name: no-update-kube-system-service-account
spec:
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - ReplicationController
    - apiGroups:
      - apps
      kinds:
      - ReplicaSet
      - Deployment
      - StatefulSet
      - DaemonSet
    - apiGroups:
      - batch
      kinds:
      - CronJob
    namespaces:
    - kube-system
  parameters:
    allowedGroups: []
    allowedUsers: []
허용됨
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: policy-test
  name: policy-test
  namespace: kube-system
spec:
  replicas: 1
  selector:
    matchLabels:
      app: policy-test-deploy
  template:
    metadata:
      labels:
        app: policy-test-deploy
    spec:
      containers:
      - command:
        - /bin/bash
        - -c
        - sleep 99999
        image: ubuntu
        name: policy-test
      serviceAccountName: policy-test-sa-1

PolicyStrictOnly

PeerAuthentication을 사용할 때 항상 STRICT Istio 상호 TLS가 지정되어야 합니다. 또한 이 제약조건을 사용하면 전용 Policy 및 MeshPolicy 리소스가 STRICT 상호 TLS를 적용합니다. 참조: https://istio.io/latest/docs/tasks/security/authentication/mtls-migration/#lock-down-mutual-tls-for-the-entire-mesh

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: PolicyStrictOnly
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

peerauthentication-strict-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: PolicyStrictOnly
metadata:
  name: peerauthentication-strict-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - PeerAuthentication
    namespaces:
    - default
허용됨
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mode-strict
  namespace: default
spec:
  mtls:
    mode: STRICT
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mode-strict-port-level
  namespace: default
spec:
  mtls:
    mode: STRICT
  portLevelMtls:
    "8080":
      mode: STRICT
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mode-strict-port-unset
  namespace: default
spec:
  mtls:
    mode: STRICT
  portLevelMtls:
    "8080":
      mode: UNSET
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: empty-mtls
  namespace: default
spec:
  mtls: {}
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: unspecified-mtls
  namespace: default
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mode-null
  namespace: default
spec:
  mtls:
    mode: null
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mtls-null
  namespace: default
spec:
  mtls: null
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mode-permissive
  namespace: default
spec:
  mtls:
    mode: PERMISSIVE
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mode-strict-port-permissive
  namespace: default
spec:
  mtls:
    mode: STRICT
  portLevelMtls:
    "8080":
      mode: PERMISSIVE
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: mode-strict-port-permissive
  namespace: default
spec:
  mtls:
    mode: STRICT
  portLevelMtls:
    "8080":
      mode: PERMISSIVE
    "8081":
      mode: STRICT

deprecated-policy-strict-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: PolicyStrictOnly
metadata:
  name: deprecated-policy-strict-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - authentication.istio.io
      kinds:
      - Policy
    namespaces:
    - default
허용됨
apiVersion: authentication.istio.io/v1alpha1
kind: Policy
metadata:
  name: default-mode-strict
  namespace: default
spec:
  peers:
  - mtls:
      mode: STRICT
허용되지 않음
apiVersion: authentication.istio.io/v1alpha1
kind: Policy
metadata:
  name: default-mtls-empty
  namespace: default
spec:
  peers:
  - mtls: {}
apiVersion: authentication.istio.io/v1alpha1
kind: Policy
metadata:
  name: default-mtls-null
  namespace: default
spec:
  peers:
  - mtls: null
apiVersion: authentication.istio.io/v1alpha1
kind: Policy
metadata:
  name: peers-empty
  namespace: default
spec:
  peers: []
apiVersion: authentication.istio.io/v1alpha1
kind: Policy
metadata:
  name: policy-no-peers
  namespace: default
spec:
  targets:
  - name: httpbin
apiVersion: authentication.istio.io/v1alpha1
kind: Policy
metadata:
  name: policy-permissive
  namespace: default
spec:
  peers:
  - mtls:
      mode: PERMISSIVE

RestrictNetworkExclusions

Istio 네트워크 캡처에서 제외할 수 있는 인바운드 포트, 아웃바운드 포트, 아웃바운드 IP 범위를 제어합니다. Istio 네트워크 캡처를 우회하는 포트 및 IP 범위는 Istio 프록시에서 처리되지 않으며 Istio mTLS 인증, 승인 정책, 기타 Istio 기능으로 제한되지 않습니다. 이 제약조건을 사용하여 다음 주석 사용에 제한을 적용할 수 있습니다.

  • traffic.sidecar.istio.io/excludeInboundPorts
  • traffic.sidecar.istio.io/excludeOutboundPorts
  • traffic.sidecar.istio.io/excludeOutboundIPRanges

https://istio.io/latest/docs/reference/config/annotations/를 참조하세요.

아웃바운드 IP 범위를 제한할 때 이 제약조건은 제외된 IP 범위가 일치하는지 또는 허용된 IP 범위 제외 항목에 포함되는지 계산합니다.

이 제약조건을 사용할 때 인바운드 포트, 아웃바운드 포트, 아웃바운드 IP 범위는 모두 해당 'include' 주석을 "*"로 설정하거나 설정되지 않은 상태로 두어서 항상 포함해야 합니다. 다음 주석을 "*"가 아닌 값으로 설정하는 것은 허용되지 않습니다.

  • traffic.sidecar.istio.io/includeInboundPorts
  • traffic.sidecar.istio.io/includeOutboundPorts
  • traffic.sidecar.istio.io/includeOutboundIPRanges

Istio 사이드카 인젝터가 항상 이를 traffic.sidecar.istio.io/excludeInboundPorts 주석에 추가하여 상태 확인에 사용할 수 있도록 하므로 이 제약조건은 항상 포트 15020을 제외하도록 허용합니다.

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: RestrictNetworkExclusions
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]
  parameters:
    # allowedInboundPortExclusions <array>: A list of ports that this
    # constraint will allow in the
    # `traffic.sidecar.istio.io/excludeInboundPorts` annotation.
    allowedInboundPortExclusions:
      - <string>
    # allowedOutboundIPRangeExclusions <array>: A list of IP ranges that this
    # constraint will allow in the
    # `traffic.sidecar.istio.io/excludeOutboundIPRanges` annotation. The
    # constraint calculates whether excluded IP ranges match or are a subset of
    # the ranges in this list.
    allowedOutboundIPRangeExclusions:
      - <string>
    # allowedOutboundPortExclusions <array>: A list of ports that this
    # constraint will allow in the
    # `traffic.sidecar.istio.io/excludeOutboundPorts` annotation.
    allowedOutboundPortExclusions:
      - <string>

예시

restrict-network-exclusions

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: RestrictNetworkExclusions
metadata:
  name: restrict-network-exclusions
spec:
  enforcementAction: deny
  match:
    kinds:
    - apiGroups:
      - ""
      kinds:
      - Pod
  parameters:
    allowedInboundPortExclusions:
    - "80"
    allowedOutboundIPRangeExclusions:
    - 169.254.169.254/32
    allowedOutboundPortExclusions:
    - "8888"
허용됨
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: nginx
  name: nothing-excluded
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 80
apiVersion: v1
kind: Pod
metadata:
  annotations:
    traffic.sidecar.istio.io/excludeInboundPorts: "80"
    traffic.sidecar.istio.io/excludeOutboundIPRanges: 169.254.169.254/32
    traffic.sidecar.istio.io/excludeOutboundPorts: "8888"
  labels:
    app: nginx
  name: allowed-port-and-ip-exclusions
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 80
apiVersion: v1
kind: Pod
metadata:
  annotations:
    traffic.sidecar.istio.io/excludeOutboundIPRanges: 169.254.169.254/32
    traffic.sidecar.istio.io/includeOutboundIPRanges: '*'
  labels:
    app: nginx
  name: all-ip-ranges-included-with-one-allowed-ip-excluded
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 80
apiVersion: v1
kind: Pod
metadata:
  annotations:
    traffic.sidecar.istio.io/includeInboundPorts: '*'
    traffic.sidecar.istio.io/includeOutboundIPRanges: '*'
    traffic.sidecar.istio.io/includeOutboundPorts: '*'
  labels:
    app: nginx
  name: everything-included-with-no-exclusions
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 80
허용되지 않음
apiVersion: v1
kind: Pod
metadata:
  annotations:
    traffic.sidecar.istio.io/excludeOutboundIPRanges: 1.1.2.0/24
  labels:
    app: nginx
  name: disallowed-ip-range-exclusion
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 80
    - containerPort: 443
apiVersion: v1
kind: Pod
metadata:
  annotations:
    traffic.sidecar.istio.io/excludeOutboundIPRanges: 169.254.169.254/32,1.1.2.0/24
  labels:
    app: nginx
  name: one-disallowed-ip-exclusion-and-one-allowed-exclusion
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 80
    - containerPort: 443
apiVersion: v1
kind: Pod
metadata:
  annotations:
    traffic.sidecar.istio.io/includeInboundPorts: 80,443
    traffic.sidecar.istio.io/includeOutboundIPRanges: 169.254.169.254/32
    traffic.sidecar.istio.io/includeOutboundPorts: "8888"
  labels:
    app: nginx
  name: disallowed-specific-port-and-ip-inclusions
spec:
  containers:
  - image: nginx
    name: nginx
    ports:
    - containerPort: 80

SourceNotAllAuthz

Istio AuthorizationPolicy 규칙에 '*' 이외의 다른 값으로 설정된 소스 주 구성원이 있어야 합니다. https://istio.io/latest/docs/reference/config/security/authorization-policy/

제약조건 스키마

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: SourceNotAllAuthz
metadata:
  name: example
spec:
  # match <object>: lets you configure which resources are in scope for this
  # constraint. For more information, see the Constraint match section of the
  # Anthos Config Management documentation:
  # https://cloud.google.com/anthos-config-management/docs/reference/match
  match:
    [match schema]

예시

sourcenotall-authz-constraint

제약조건
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: SourceNotAllAuthz
metadata:
  name: sourcenotall-authz-constraint
spec:
  enforcementAction: dryrun
  match:
    kinds:
    - apiGroups:
      - security.istio.io
      kinds:
      - AuthorizationPolicy
허용됨
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: source-principals-good
  namespace: foo
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
      version: v1
허용되지 않음
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: source-principals-dne
  namespace: foo
spec:
  rules:
  - from:
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
      version: v1
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: source-principals-all
  namespace: foo
spec:
  rules:
  - from:
    - source:
        principals:
        - '*'
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
      version: v1
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: source-principals-someall
  namespace: foo
spec:
  rules:
  - from:
    - source:
        principals:
        - cluster.local/ns/default/sa/sleep
        - '*'
    - source:
        namespaces:
        - test
    to:
    - operation:
        methods:
        - GET
        paths:
        - /info*
    - operation:
        methods:
        - POST
        paths:
        - /data
    when:
    - key: request.auth.claims[iss]
      values:
      - https://accounts.google.com
  selector:
    matchLabels:
      app: httpbin
      version: v1

다음 단계