Google Cloud: Step by Step Tutorials for setting up Multi-cluster Ingress (MCI)

gistfile1.txt

# Application Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
  namespace: default
spec:
  selector:
    matchLabels:
      app: my-app
  replicas: 2
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

# Service (ClusterIP) Exposing the Application
apiVersion: v1
kind: Service
metadata:
  name: my-app-service
  namespace: default
spec:
  ports:
  - port: 80
    targetPort: 80
  selector:
    app: my-app
  type: ClusterIP

# MultiClusterService Configuration
apiVersion: networking.gke.io/v1
kind: MultiClusterService
metadata:
  name: my-app-mcs
  namespace: default
spec:
  template:
    spec:
      selector:
        app: my-app
      ports:
      - name: http
        protocol: TCP
        port: 80
        targetPort: 80

# MultiClusterIngress Configuration
apiVersion: networking.gke.io/v1
kind: MultiClusterIngress
metadata:
  name: my-app-mci
  namespace: default
spec:
  template:
    spec:
      frontendConfig:
        name: my-app-frontendconfig
      rules:
      - host: myapp.example.com
        http:
          paths:
          - path: /*
            pathType: Prefix
            backend:
              service:
                name: my-app-mcs
                port:
                  number: 80

# FrontendConfig
apiVersion: networking.gke.io/v1
kind: FrontendConfig
metadata:
  name: my-app-frontendconfig
  namespace: default
spec:
  sslPolicy: custom-ssl-policy
  redirectToHttps:
    enabled: true

# BackendConfig
apiVersion: cloud.google.com/v1
kind: BackendConfig
metadata:
  name: my-app-backendconfig
  namespace: default
spec:
  healthCheck:
    checkIntervalSec: 30
    timeoutSec: 5
    healthyThreshold: 2
    unhealthyThreshold: 3
    requestPath: /healthz
  sessionAffinity:
    affinityType: CLIENT_IP
``