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Editor: PieterSmit
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   * or {{{
annotations:
  nginx.ingress.kubernetes.io/rewrite-target: /$2
...
spec:
  rules:
  - http:
     paths:
     - path: /something(/|$)(.*)
}}}

k8s/StudyNotes/k8s Ingress Service

  • Service [ clusterPort, nodePort]

    • Problem service nodePort > 30k, so need proxy server for port 80, 443 to this port.

  • On cloud set to LoadBalancer, still nodePort + talks to cloud paltform to configure the LB

    • e.g. svc1 p38080, svc2 p38282, need yet another load-balancer
  • Ingress - l7 loadbalancer config, path based.
    • Ingress controller Nginx, HAPROXY, traefik, GCE(Google), Istio

    • Ingress Resource 

      apiVersion: networking.k8s.io/v1
kind: Ingress
spec: 
  rules:
  - host: wear.my-online-store.com 
    http:
      paths:
      - path: /wear
        pathType: Prefix
        backend:
          serviceName: wear-service
          servicePort: 80
      - path: /watch
        pathType: Prefix
        backend:
          serviceName: watch-service
          servicePort: 80

  • From 1.20,  kubectl create ingress <ingress-name> --rule="host.com/path*=wear-svc:80" 

  • Different ingress controllers can have annotations to set feature.

    • e.g. for nginx to strip /path/ when sending to backend service 

        annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /

    • or 

      annotations:
  nginx.ingress.kubernetes.io/rewrite-target: /$2
...
spec:
  rules:
  - http:
     paths:
     - path: /something(/|$)(.*)

k8s/StudyNotes/k8sIngressService (last edited 2021-10-25 04:16:11 by PieterSmit)