Anthos 服務網格和 Traffic Director 現已改名為 Cloud Service Mesh。詳情請參閱 Cloud Service Mesh 總覽。

本頁面由 Cloud Translation API 翻譯而成。

在 GKE 中設定 Envoy 補充服務網格

本頁說明如何在 GKE 上設定 Envoy 附加服務中介。

事前準備

本指南假設您已具備以下條件：

設定服務

建立 HTTP 服務範例：

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: us-docker.pkg.dev/google-samples/containers/gke/whereami:v1
        ports:
        - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: whereami
  namespace: sidecar-example
spec:
  selector:
    app: whereami
  ports:
  - port: 8080
    targetPort: 8080
EOF

為服務建立基準 HTTPRoute：

kubectl apply -f - <<EOF
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，您也可以使用下列資訊清單說明 gRPC 服務範例：

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

設定用戶端

執行下列指令，在 sidecar-example 命名空間中啟用附屬應用程式插入功能：
```
kubectl label namespace sidecar-example mesh.cloud.google.com/csm-injection=sidecar
```

建立用戶端：

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

確認用戶端 Pod 已自動插入 Envoy 附屬程式容器：
```
kubectl get pods -n sidecar-example -l run=client
```
輸出結果會與下列內容類似：
```
NAME                    READY   STATUS    RESTARTS   AGE
client-xxxx             2/2     Running   0          20s
```
請等待用戶端準備就緒，並讓 Status 執行中，再繼續操作。

確認 Envoy 附加元件服務網格設定。以下指令會從用戶端傳送要求給 whereami 服務

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"

輸出結果會與下列內容類似：

< 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",
  ...
}