Anthos Service Mesh 和 Traffic Director 现已更名为 Cloud Service Mesh。如需了解详情，请参阅 Cloud Service Mesh 概览。

此页面由 Cloud Translation API 翻译。

在 GKE 上设置 Envoy Sidecar 服务网格

本页介绍了如何在 GKE 上设置 Envoy Sidecar 服务网格。

前提条件

首先，本指南假定您已完成以下操作：

设置服务

创建一个 HTTP 示例服务：

kubectl apply -f - <<EOF
kind: Namespace
apiVersion: v1
metadata:
  name: sidecar-example
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: whereami
  namespace: sidecar-example
spec:
  replicas: 2
  selector:
    matchLabels:
      app: whereami
  template:
    metadata:
      labels:
        app: whereami
    spec:
      containers:
      - name: whereami
        image: gcr.io/google-samples/whereami:v1.2.20
        ports:
        - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: whereami
  namespace: sidecar-example
spec:
  selector:
    app: whereami
  ports:
  - port: 8080
    targetPort: 8080
EOF

为该服务创建基准 HTTPRoute：

apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: whereami-route
  namespace: sidecar-example
spec:
  parentRefs:
  - name: whereami
    kind: Service
    group: ""
  rules:
  - backendRefs:
    - name: whereami
      port: 8080
EOF

或者，您也可以参考以下清单，了解 gRPC 服务示例：

apiVersion: v1
kind: Service
metadata:
  name: sample-service
  namespace: sample-ns
  annotations:
    networking.gke.io/app-protocols: '{"50051": "HTTP2"}' # 50051 is backendref.port
spec:
  ports:
  - port: 50051
    targetPort: 50051

设置客户端

运行以下命令以在 sidecar-example 命名空间中启用 Sidecar 注入：
```
kubectl label namespace sidecar-example csm-injection=enabled
```

创建客户端：

kubectl apply -f - <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    run: client
  name: client
  namespace: sidecar-example
spec:
  replicas: 1
  selector:
    matchLabels:
      run: client
  template:
    metadata:
      labels:
        run: client
    spec:
      containers:
      - name: client
        image: curlimages/curl
        command:
        - sh
        - -c
        - while true; do sleep 1; done
EOF

验证客户端 Pod 是否自动注入了 Envoy Sidecar 容器：

kubectl get pods -n sidecar-example -l run=client

输出类似于以下内容：

NAME                    READY   STATUS    RESTARTS   AGE
client-xxxx             2/2     Running   0          20s

等待客户端准备就绪并让 Status 运行，然后继续。

验证 Envoy-sidecar 服务网格设置。以下命令会将客户端向 whereami 服务发出的请求

CLIENT_POD=$(kubectl get pod -n sidecar-example -l run=client -o=jsonpath='{.items[0].metadata.name}')

# The VIP where the following request will be sent. Because all requests
# from the client container are redirected to the Envoy proxy sidecar, you
# can use any IP address, including 10.0.0.2, 192.168.0.1, and others.
VIP='10.0.0.1'

TEST_CMD="curl -v -H 'host: whereami.sidecar-example.svc.cluster.local' $VIP"

kubectl exec -it $CLIENT_POD -n sidecar-example -c client -- /bin/sh -c "$TEST_CMD"

输出类似于以下内容：

< Trying 10.0.0.1:80...
< Connected to 10.0.0.1 (10.0.0.1) port 80 (#0)
< GET / HTTP/1.1
< Host: whereami
< User-Agent: curl/7.82.0-DEV
< Accept: */*
<
< Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< content-type: application/json
< content-length: 318
< access-control-allow-origin: *
< server: envoy
< date: Tue, 12 Apr 2022 22:30:13 GMT
<
{
  "cluster_name": "${CLUSTER_NAME}",
  "location": "${LOCATION}",
  "host_header": "whereami",
  ...
}