쿠버네티스 Ingress

1 개요

Kubernetes Ingress

쿠버네티스 인그레스, 인입, 수신

• 클러스터 내의 서비스들에 대한 외부 접근(특히 HTTP)을 관리하는 API 객체
• 로드 밸런싱, SSL 터미네이션, 이름-기반 버추얼 호스팅을 제공 가능

2 기본

2.1 Prefix

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myingress
spec:
  rules:
  - host: example.com # Host
    http:
      paths:
      - pathType: Prefix
        path: /
        backend:
          service:
            name: myservice # Service
            port: 
              number: 80 # Port

2.2 ImplementationSpecific

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myingress
spec:
  rules:
  - host: example.com # Host
    http:
      paths:
      - pathType: ImplementationSpecific
        backend:
          service:
            name: myservice # Service
            port:
              number: 80 # Port

3 기타 예시

3.1 tls

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: tls-example-ingress
spec:
  tls:
  - hosts:
      - https-example.foo.com
    secretName: testsecret-tls
  rules:
  - host: https-example.foo.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: service1
            port:
              number: 80

3.2 defaultBackend

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-resource-backend
spec:
  defaultBackend:
    resource:
      apiGroup: k8s.example.com
      kind: StorageBucket
      name: static-assets
  rules:
    - http:
        paths:
          - path: /icons
            pathType: ImplementationSpecific
            backend:
              resource:
                apiGroup: k8s.example.com
                kind: StorageBucket
                name: icon-assets

3.3 Prefix

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: minimal-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /testpath
        pathType: Prefix
        backend:
          service:
            name: test
            port:
              number: 80

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-wildcard-host
spec:
  rules:
  - host: "foo.bar.com"
    http:
      paths:
      - pathType: Prefix
        path: "/bar"
        backend:
          service:
            name: service1
            port:
              number: 80
  - host: "*.foo.com"
    http:
      paths:
      - pathType: Prefix
        path: "/foo"
        backend:
          service:
            name: service2
            port:
              number: 80

4 구식(v1beta1)

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: traffic-router
spec:
  rules:
    - http:
        paths:
          - path: /
            backend:
              serviceName: servicename
              servicePort: 8080

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: test-ingress
spec:
  rules:
  - host: foo.bar.com
    http:
      paths:
      - path: /
        backend:
          serviceName: test
          servicePort: 80

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: test-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /testpath
        backend:
          serviceName: test
          servicePort: 80

5 같이 보기

• 인그레스
• k8s 용어
• k8s 네트워크
• k8s Service
• k8s Ingress Controller
• k8s ingressClassName
• k8s Ingress HTTP 50X 오류 코드
• no matches for kind "Ingress" in version "extensions/v1beta1"

6 참고

• https://kubernetes.io/docs/concepts/services-networking/ingress/