Container Compute Service:Advanced ALB Ingress configurations

Comportamento de correspondência de caminho

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: cafe-ingress
  annotations:
    alb.ingress.kubernetes.io/healthcheck-enabled: "true"
    alb.ingress.kubernetes.io/healthcheck-path: "/"
    alb.ingress.kubernetes.io/healthcheck-protocol: "HTTP"
    alb.ingress.kubernetes.io/healthcheck-method: "HEAD"
    alb.ingress.kubernetes.io/healthcheck-httpcode: "http_2xx"
    alb.ingress.kubernetes.io/healthcheck-timeout-seconds: "5"
    alb.ingress.kubernetes.io/healthcheck-interval-seconds: "2"
    alb.ingress.kubernetes.io/healthy-threshold-count: "3"
    alb.ingress.kubernetes.io/unhealthy-threshold-count: "3"
spec:
  ingressClassName: alb
  rules:
  - http:
      paths:
      - path: /tea
        backend:
          service:
            name: tea-svc
            port:
              number: 80
      - path: /coffee
        backend:
          service:
            name: coffee-svc
            port:
              number: 80

apiVersion: v1
kind: Service
metadata:
  name: demo-service-ssl
  namespace: default
spec:
  ports:
    - name: port1
      port: 80
      protocol: TCP
      targetPort: 8080
  selector:
    app: demo-ssl
  sessionAffinity: None
  type: ClusterIP
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-ssl
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: demo-ssl
  template:
    metadata:
      labels:
        app: demo-ssl
    spec:
      containers:
        - image: registry.cn-hangzhou.aliyuncs.com/alb-sample/cafe:v1
          imagePullPolicy: IfNotPresent
          name: demo-ssl
          ports:
            - containerPort: 8080
              protocol: TCP
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    alb.ingress.kubernetes.io/ssl-redirect: "true"
  name: demo-ssl
  namespace: default
spec:
  ingressClassName: alb
  tls:
  - hosts:
    - ssl.alb.ingress.top
  rules:
    - host: ssl.alb.ingress.top
      http:
        paths:
          - backend:
              service:
                name: demo-service-ssl
                port:
                  number: 80
            path: /
            pathType: Prefix

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    alb.ingress.kubernetes.io/backend-protocol: "grpc"
  name: lxd-grpc-ingress
spec:
  ingressClassName: alb
  tls:
  - hosts:
    - demo.alb.ingress.top
  rules:
  - host: demo.alb.ingress.top
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: grpc-demo-svc
            port:
              number: 9080

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
   alb.ingress.kubernetes.io/use-regex: "true"
   alb.ingress.kubernetes.io/conditions.service-a: |
     [{
       "type": "Path",
       "pathConfig": {
           "values": [
              "~*^/pathvalue1",
              "/pathvalue2"
           ]
       }
      }]
  name: ingress-example
spec:
  ingressClassName: alb
  rules:
   - http:
      paths:
      - path: /test
        pathType: Prefix
        backend:
          service:
            name: service-a
            port:
              number: 88

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    alb.ingress.kubernetes.io/use-regex: "true"
    alb.ingress.kubernetes.io/rewrite-target: /path/${2}
  name: rewrite-ingress
spec:
  ingressClassName: alb
  rules:
  - host: demo.alb.ingress.top
    http:
      paths:
      - path: /something(/|$)(.*)
        pathType: Prefix
        backend:
          service:
            name: rewrite-svc
            port:
              number: 9080

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: cafe-ingress
  annotations:
   alb.ingress.kubernetes.io/listen-ports: '[{"HTTP": 80},{"HTTPS": 443}]'
spec:
  ingressClassName: alb
  tls:
  - hosts:
    - demo.alb.ingress.top
  rules:
  - host: demo.alb.ingress.top
    http:
      paths:
      - path: /tea
        pathType: ImplementationSpecific
        backend:
          service:
            name: tea-svc
            port:
              number: 80

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: cafe-ingress
  annotations:
   alb.ingress.kubernetes.io/order: "2"
spec:
  ingressClassName: alb
  rules:
  - host: demo.alb.ingress.top
    http:
      paths:
      - path: /tea
        pathType: ImplementationSpecific
        backend:
          service:
            name: tea-svc
            port:
              number: 80

Canary baseado em cabeçalho

canary-by-header especifica o nome do cabeçalho de requisição a ser correspondido. canary-by-header-value especifica o valor necessário para o cabeçalho e deve ser usado em conjunto com canary-by-header. Requisições em que o cabeçalho corresponde são roteadas para o Service canary; todas as outras requisições seguem para a próxima regra canary por prioridade.

No exemplo a seguir, requisições com o cabeçalho location: hz vão para o Service canary:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    alb.ingress.kubernetes.io/order: "1"
    alb.ingress.kubernetes.io/canary: "true"
    alb.ingress.kubernetes.io/canary-by-header: "location"
    alb.ingress.kubernetes.io/canary-by-header-value: "hz"
  name: demo-canary
  namespace: default
spec:
  ingressClassName: alb
  rules:
    - http:
        paths:
          - backend:
              service:
                name: demo-service-hello
                port:
                  number: 80
            path: /hello
            pathType: ImplementationSpecific

Canary baseado em cookie

canary-by-cookie divide o tráfego com base no nome de um cookie. Defina o cookie como always para rotear requisições para o Service canary, ou never para excluí-las.

Apenas always e never são suportados. Valores personalizados de cookie não são aceitos.

No exemplo a seguir, requisições com o cookie demo=always vão para o Service canary:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    alb.ingress.kubernetes.io/order: "2"
    alb.ingress.kubernetes.io/canary: "true"
    alb.ingress.kubernetes.io/canary-by-cookie: "demo"
  name: demo-canary-cookie
  namespace: default
spec:
  ingressClassName: alb
  rules:
    - http:
        paths:
          - backend:
              service:
                name: demo-service-hello
                port:
                  number: 80
            path: /hello
            pathType: ImplementationSpecific

Canary baseado em peso

canary-weight define a porcentagem de requisições roteadas para o Service canary. O valor deve ser um número inteiro de 0 a 100.

No exemplo a seguir, 50% das requisições vão para o Service canary:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    alb.ingress.kubernetes.io/order: "3"
    alb.ingress.kubernetes.io/canary: "true"
    alb.ingress.kubernetes.io/canary-weight: "50"
  name: demo-canary-weight
  namespace: default
spec:
  ingressClassName: alb
  rules:
    - http:
        paths:
          - backend:
              service:
                name: demo-service-hello
                port:
                  number: 80
            path: /hello
            pathType: ImplementationSpecific

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: cafe-ingress-v3
  annotations:
    alb.ingress.kubernetes.io/sticky-session: "true"
    alb.ingress.kubernetes.io/sticky-session-type: "Insert"
    alb.ingress.kubernetes.io/cookie-timeout: "1800"
spec:
  ingressClassName: alb
  rules:
  - http:
      paths:
      - path: /tea2
        backend:
          service:
            name: tea-svc
            port:
              number: 80
      - path: /coffee2
        backend:
          service:
            name: coffee-svc
            port:
              number: 80

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: cafe-ingress
  annotations:
    alb.ingress.kubernetes.io/backend-scheduler: "uch"
    alb.ingress.kubernetes.io/backend-scheduler-uch-value: "test"
spec:
  ingressClassName: alb
  rules:
  - host: demo.alb.ingress.top
    http:
      paths:
      - path: /tea
        pathType: ImplementationSpecific
        backend:
          service:
            name: tea-svc
            port:
              number: 80

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: alb-ingress
  annotations:
    alb.ingress.kubernetes.io/enable-cors: "true"
    alb.ingress.kubernetes.io/cors-expose-headers: ""
    alb.ingress.kubernetes.io/cors-allow-methods: "GET,POST"
    alb.ingress.kubernetes.io/cors-allow-credentials: "true"
    alb.ingress.kubernetes.io/cors-max-age: "600"
spec:
  ingressClassName: alb
  rules:
  - host: demo.alb.ingress.top
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: cloud-nodeport
            port:
              number: 80

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: alb-ingress
  annotations:
    alb.ingress.kubernetes.io/backend-keepalive: "true"
spec:
  ingressClassName: alb
  rules:
  - host: demo.alb.ingress.top
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: cloud-nodeport
            port:
              number: 80

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: cafe-ingress
  annotations:
    alb.ingress.kubernetes.io/traffic-limit-qps: "50"
spec:
  ingressClassName: alb
  rules:
   - host: demo.alb.ingress.top
     http:
      paths:
      - path: /tea
        pathType: ImplementationSpecific
        backend:
          service:
            name: tea-svc
            port:
              number: 80
      - path: /coffee
        pathType: ImplementationSpecific
        backend:
          service:
            name: coffee-svc
            port:
              number: 80