Configura una malla de servicios de gRPC sin proxy en GKE

En estas páginas, se describe cómo implementar un ejemplo de cliente y servidor de gRPC sin proxy en una malla de servicios de Cloud.

Requisitos previos

Como punto de partida, en esta guía se supone que ya hiciste lo siguiente:

Requisitos

En esta sección, se enumeran los requisitos para los servicios compatibles:

  • gRPC C++, versión 1.62.0 o posterior
  • gRPC Java: versión 1.65.0 o posterior
  • gRPC Go: versión 1.65.0 o posterior
  • gRPC Python: versión 1.65.0 o posterior

Configura el Service

Implementa un servicio de gRPC:

C++

kubectl apply -f - <<EOF
---
apiVersion: v1
kind: Service
metadata:
  name: helloworld
spec:
  selector:
    app: psm-grpc-server
  ports:
  - port: 50051
    targetPort: 50051
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-server
  labels:
    app: psm-grpc-server
spec:
  replicas: 2
  selector:
    matchLabels:
      app: psm-grpc-server
  template:
    metadata:
      labels:
        app: psm-grpc-server
    spec:
      containers:
      - name: psm-grpc-server
        image: grpc/csm-o11y-example-cpp-server:latest
        imagePullPolicy: Always
        args:
          "--port=50051"
        ports:
          - containerPort: 50051
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-server
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image: gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory
EOF

Java

kubectl apply -f - <<EOF
---
apiVersion: v1
kind: Service
metadata:
  name: helloworld
spec:
  selector:
    app: psm-grpc-server
  ports:
  - port: 50051
    targetPort: 50051
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-server
  labels:
    app: psm-grpc-server
spec:
  replicas: 2
  selector:
    matchLabels:
      app: psm-grpc-server
  template:
    metadata:
      labels:
        app: psm-grpc-server
    spec:
      containers:
      - name: psm-grpc-server
        image: grpc/csm-o11y-example-java-server:latest
        imagePullPolicy: Always
        args:
          "50051"
          "9464"
        ports:
          - containerPort: 50051
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-server
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image: gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory
EOF

Go

kubectl apply -f - <<EOF
---
apiVersion: v1
kind: Service
metadata:
  name: helloworld
spec:
  selector:
    app: psm-grpc-server
  ports:
  - port: 50051
    targetPort: 50051
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-server
  labels:
    app: psm-grpc-server
spec:
  replicas: 2
  selector:
    matchLabels:
      app: psm-grpc-server
  template:
    metadata:
      labels:
        app: psm-grpc-server
    spec:
      containers:
      - name: psm-grpc-server
        image: grpc/csm-o11y-example-go-server:latest
        imagePullPolicy: Always
        args:
          "--port=50051"
        ports:
          - containerPort: 50051
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-server
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image: gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory
EOF

Python

kubectl apply -f - <<EOF
---
apiVersion: v1
kind: Service
metadata:
  name: helloworld
spec:
  selector:
    app: psm-grpc-server
  ports:
  - port: 50051
    targetPort: 50051
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-server
  labels:
    app: psm-grpc-server
spec:
  replicas: 2
  selector:
    matchLabels:
      app: psm-grpc-server
  template:
    metadata:
      labels:
        app: psm-grpc-server
    spec:
      containers:
      - name: psm-grpc-server
        image: grpc/csm-o11y-example-python-server:latest
        imagePullPolicy: Always
        args:
          "--port=50051"
        ports:
          - containerPort: 50051
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-server
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image: gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory
EOF

La salida es similar a lo siguiente:

service/helloworld created
deployment.apps/psm-grpc-server created
  1. Verifica que se hayan creado los Pods:

    kubectl get pods
    

    La salida es similar a lo siguiente:

    NAME                               READY   STATUS    RESTARTS   AGE
    psm-grpc-server-65966bf76d-2wwxz   1/1     Running   0          13s
    psm-grpc-server-65966bf76d-nbxd2   1/1     Running   0          13s
    

    Espera a que todos los Pods estén listos y tengan el Status en ejecución antes de continuar.

  2. Implementa una HTTPRoute:

    kubectl apply -f - <<EOF
    apiVersion: gateway.networking.k8s.io/v1beta1
    kind: HTTPRoute
    metadata:
      name: app1
    spec:
      parentRefs:
      - name: helloworld
        kind: Service
        group: ""
      rules:
      - backendRefs:
        - name: helloworld
          port: 50051
    EOF
    

    Este comando crea una HTTPRoute llamada app1 y envía todas las RPC al Servicio de helloworld.

    Ten en cuenta que el servicio parentRef también es helloworld, lo que significa que nuestro HTTPRoute se adjunta a este servicio y procesará todas las RPC dirigidas a este servicio. En el caso de gRPC sin proxy, significa cualquier cliente que envíe RPC en un canal de gRPC para el xds:///helloworld.default.svc.cluster.local:50051 de destino.

  3. Verifica que se haya creado la nueva HTTPRoute app1:

    kubectl get httproute
    

    La salida es similar a lo siguiente:

    NAME   HOSTNAMES   AGE
    app1               72s
    

Configura el cliente

En esta sección, se describe cómo usar un cliente gRPC para verificar que Cloud Service Mesh enrute el tráfico correctamente en la malla.

Ejecutar un cliente de gRPC y indicarle que use la configuración de enrutamiento especificada por la HTTPRoute:

C++

kubectl apply -f - <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-client
  labels:
    app: psm-grpc-client
spec:
  replicas: 1
  selector:
    matchLabels:
      app: psm-grpc-client
  template:
    metadata:
      labels:
        app: psm-grpc-client
    spec:
      containers:
      - name: psm-grpc-client
        image: grpc/csm-o11y-example-cpp-server:latest
        imagePullPolicy: Always
        args:
          "--target=xds:///helloworld.default.svc.cluster.local:50051"
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-client
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CONTAINER_NAME
            value: psm-grpc-client
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image:  gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory

EOF

Java

kubectl apply -f - <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-client
  labels:
    app: psm-grpc-client
spec:
  replicas: 1
  selector:
    matchLabels:
      app: psm-grpc-client
  template:
    metadata:
      labels:
        app: psm-grpc-client
    spec:
      containers:
      - name: psm-grpc-client
        image: grpc/csm-o11y-example-java-server:latest
        imagePullPolicy: Always
        args:
          "world"<br/>"xds:///helloworld.default.svc.cluster.local:50051"
          "9464"
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-client
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CONTAINER_NAME
            value: psm-grpc-client
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image:  gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory

EOF

Go

kubectl apply -f - <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-client
  labels:
    app: psm-grpc-client
spec:
  replicas: 1
  selector:
    matchLabels:
      app: psm-grpc-client
  template:
    metadata:
      labels:
        app: psm-grpc-client
    spec:
      containers:
      - name: psm-grpc-client
        image: grpc/csm-o11y-example-go-server:latest
        imagePullPolicy: Always
        args:
          "--target=xds:///helloworld.default.svc.cluster.local:50051"
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-client
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CONTAINER_NAME
            value: psm-grpc-client
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image:  gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory

EOF

Python

kubectl apply -f - <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: psm-grpc-client
  labels:
    app: psm-grpc-client
spec:
  replicas: 1
  selector:
    matchLabels:
      app: psm-grpc-client
  template:
    metadata:
      labels:
        app: psm-grpc-client
    spec:
      containers:
      - name: psm-grpc-client
        image: grpc/csm-o11y-example-python-server:latest
        imagePullPolicy: Always
        args:
          "--target=xds:///helloworld.default.svc.cluster.local:50051"
        env:
          - name: GRPC_XDS_BOOTSTRAP
            value: "/tmp/grpc-xds/td-grpc-bootstrap.json"
          - name: CSM_WORKLOAD_NAME
            value: psm-grpc-client
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: NAMESPACE_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
          - name: CONTAINER_NAME
            value: psm-grpc-client
          - name: OTEL_RESOURCE_ATTRIBUTES
            value: k8s.pod.name=\$(POD_NAME),k8s.namespace.name=\$(NAMESPACE_NAME),k8s.container.name=\$(CONTAINER_NAME)
        volumeMounts:
          - mountPath: /tmp/grpc-xds/
            name: grpc-td-conf
            readOnly: true
      initContainers:
        - name: grpc-td-init
          image:  gcr.io/trafficdirector-prod/td-grpc-bootstrap:0.16.0
          imagePullPolicy: Always
          args:
            - "--output=/tmp/bootstrap/td-grpc-bootstrap.json"
            - "--vpc-network-name=default"
            - "--xds-server-uri=trafficdirector.googleapis.com:443"
            - "--generate-mesh-id"
          volumeMounts:
            - mountPath: /tmp/bootstrap/
              name: grpc-td-conf
      volumes:
        - name: grpc-td-conf
          emptyDir:
            medium: Memory

EOF

La salida es similar a lo siguiente:

deployment.apps/psm-grpc-client created

Configuración de Google Cloud Managed Service para Prometheus (opcional)

Puedes implementar Google Cloud Managed Service para Prometheus Recurso PodMonitoring para exportar las métricas a Cloud Monitoring.

  • Para los servidores, ejecuta el siguiente comando:

    kubectl apply -f - <<EOF
    apiVersion: monitoring.googleapis.com/v1
    kind: PodMonitoring
    metadata:
      name: psm-grpc-server-gmp
    spec:
      selector:
        matchLabels:
          app: psm-grpc-server
      endpoints:
      - port: 9464
        interval: 10s
    EOF
    
  • Para los clientes, ejecuta el siguiente comando:

    kubectl apply -f - <<EOF
    apiVersion: monitoring.googleapis.com/v1
    kind: PodMonitoring
    metadata:
      name: psm-grpc-client-gmp
    spec:
      selector:
        matchLabels:
          app: psm-grpc-client
      endpoints:
      - port: 9464
        interval: 10s
    EOF
    

    Después de implementar el recurso PodMonitoring, cada Pod que coincida Se copiará localhost:9464/metrics cada 10 segundos y exportará la los resultados a Cloud Monitoring.

Para ver las métricas en Cloud Monitoring, sigue estos pasos:

Puedes navegar a la sección Explorador de métricas de la consola de Google Cloud, seleccionar Prometheus Target > Grpc para encontrar las métricas.

Ir al Explorador de métricas

Verifica la configuración de la malla de servicios de gRPC sin proxy y la observabilidad de la malla

  1. Verifica el resultado de las métricas del Pod cliente:

    kubectl exec $(kubectl get po | grep psm-grpc-client | awk '{print $1;}') -- /usr/bin/curl -s http://localhost:9464/metrics
    

    El resultado muestra las métricas (con las etiquetas de la malla de servicios) que se recuperaron del extremo:

    Defaulted container "psm-grpc-client" out of: psm-grpc-client, grpc-td-init (init)
    # HELP exposer_transferred_bytes_total Transferred bytes to metrics services
    # TYPE exposer_transferred_bytes_total counter
    exposer_transferred_bytes_total 36047
    # HELP exposer_scrapes_total Number of times metrics were scraped
    # TYPE exposer_scrapes_total counter
    exposer_scrapes_total 1
    # HELP exposer_request_latencies Latencies of serving scrape requests, in microseconds
    # TYPE exposer_request_latencies summary
    exposer_request_latencies_count 1
    exposer_request_latencies_sum 1246
    exposer_request_latencies{quantile="0.5"} Nan
    exposer_request_latencies{quantile="0.9"} Nan
    exposer_request_latencies{quantile="0.99"} Nan
    # HELP grpc_client_attempt_rcvd_total_compressed_message_size_By Compressed message bytes received per call attempt
    # TYPE grpc_client_attempt_rcvd_total_compressed_message_size_By histogram
    grpc_client_attempt_rcvd_total_compressed_message_size_By_count{csm_mesh_id="gsmmesh-35av-my-cluster-3-us-east7-c-35av6nnbi9jz",csm_remote_workload_canonical_service="unknown",csm_remote_workload_cluster_name="my-cluster-3",csm_remote_workload_location="us-east7-c",csm_remote_workload_name="psm-grpc-server",csm_remote_workload_namespace_name="default",csm_remote_workload_project_id="grpc-testing",csm_remote_workload_type="gcp_kubernetes_engine",csm_workload_canonical_service="unknown",grpc_method="helloworld.Greeter/SayHello",grpc_status="OK",grpc_target="xds:///helloworld.default.svc.cluster.local:50051"} 114 1695445356167
    ...
    
  2. Verifica el resultado de las métricas del servidor:

    kubectl exec $(kubectl get po | grep psm-grpc-server | awk '{print $1;}' | head -n 1) -- /usr/bin/curl -s http://localhost:9464/metrics
    

    El resultado muestra las métricas (con las etiquetas de la malla de servicios) que se recuperaron del extremo:

    Defaulted container "psm-grpc-server" out of: psm-grpc-server, grpc-td-init (init)
    # HELP exposer_transferred_bytes_total Transferred bytes to metrics services
    # TYPE exposer_transferred_bytes_total counter
    exposer_transferred_bytes_total 35945
    # HELP exposer_scrapes_total Number of times metrics were scraped
    # TYPE exposer_scrapes_total counter
    exposer_scrapes_total 1
    # HELP exposer_request_latencies Latencies of serving scrape requests, in microseconds
    # TYPE exposer_request_latencies summary
    exposer_request_latencies_count 1
    exposer_request_latencies_sum 2369
    exposer_request_latencies{quantile="0.5"} Nan
    exposer_request_latencies{quantile="0.9"} Nan
    exposer_request_latencies{quantile="0.99"} Nan
    # HELP target Target metadata
    # TYPE target gauge
    target_info{otel_scope_name="grpc-c++",otel_scope_version="1.62.0-dev",service_name="unknown_service",k8s_pod_name="psm-grpc-server-6f75c8f857-qst5k",k8s_namespace_name="default",k8s_container_name="$(CONTAINER_NAME)",telemetry_sdk_version="1.13.0",telemetry_sdk_name="opentelemetry",telemetry_sdk_language="cpp"} 1 1708157423871
    # HELP grpc_server_call_sent_total_compressed_message_size_bytes Compressed message bytes sent per server call
    # TYPE grpc_server_call_sent_total_compressed_message_size_bytes histogram
    grpc_server_call_sent_total_compressed_message_size_bytes_count{csm_mesh_id="gsmmesh-fogj-my-cluster-us-central1-a-fogjnvmqo8fn",csm_remote_workload_canonical_service="unknown",csm_remote_workload_cluster_name="my-cluster",csm_remote_workload_location="us-central1-a",csm_remote_workload_name="test-workload-name",csm_remote_workload_namespace_name="default",csm_remote_workload_project_id="project-id",csm_remote_workload_type="gcp_kubernetes_engine",csm_workload_canonical_service="unknown",grpc_method="helloworld.Greeter/SayHello",grpc_status="OK",otel_scope_name="grpc-c++",otel_scope_version="1.62.0-dev"} 1796 1708157423871
    …
    

Soluciona problemas de observabilidad de Cloud Service Mesh

En esta sección, se muestra cómo solucionar problemas habituales.

Un valor de atributo en la métrica se muestra como desconocido.

Si un valor de atributo en la métrica aparece como desconocido, asegúrate de que todos los objetos binarios involucrados (cliente y servidor) tengan configurada una malla de servicios de gRPC sin proxy en GKE.

Ten en cuenta que la observabilidad de la malla de servicios de Cloud determina la topología de la malla información mediante etiquetas de entorno. Asegúrate de que la especificación del pod o servicio del cliente y del servicio especifique todas las etiquetas como se describe en el ejemplo.

  1. Describe la implementación de psm-grpc-server:

    kubectl describe Deployment psm-grpc-server | grep "psm-grpc-server:" -A 12
    

    El resultado es similar al siguiente:

    psm-grpc-server:
    Image:      grpc/csm-example-server:2024-02-13
    Port:       50051/TCP
    Host Port:  0/TCP
    Args:
      --port=50051
    Environment:
      GRPC_XDS_BOOTSTRAP:          /tmp/grpc-xds/td-grpc-bootstrap.json
      POD_NAME:                     (v1:metadata.name)
      NAMESPACE_NAME:               (v1:metadata.namespace)
      CSM_WORKLOAD_NAME:           psm-grpc-server
      OTEL_RESOURCE_ATTRIBUTES:    k8s.pod.name=$(POD_NAME),k8s.namespace.name=$(NAMESPACE_NAME),k8s.container.name=$(CONTAINER_NAME)
    
  2. Describe la implementación de psm-grpc-client:

    kubectl describe Deployment psm-grpc-client | grep "psm-grpc-client:" -A 12
    

    El resultado es similar al siguiente:

    psm-grpc-client:
    Image:      grpc/csm-example-client:2024-02-13
    Port:       <none>
    Host Port:  <none>
    Args:
      --target=xds:///helloworld.default.svc.cluster.local:50051
    Environment:
      GRPC_XDS_BOOTSTRAP:          /tmp/grpc-xds/td-grpc-bootstrap.json
      CSM_WORKLOAD_NAME:           test-workload-name
      POD_NAME:                     (v1:metadata.name)
      NAMESPACE_NAME:               (v1:metadata.namespace)
      CONTAINER_NAME:              psm-grpc-client
    

No se muestran las métricas

Si usas el exportador de Prometheus, verifica que la URL del exportador de Prometheus esté configurada según lo esperado.

Asegúrate de que los canales de gRPC tengan habilitado Cloud Service Mesh. Los canales deben tener un objetivo con el formato xds:///. Los servidores gRPC siempre están habilitados la malla de servicios en la nube.