Cert Manager

ssl을 생성해주는 툴

ClusterIssuer : 클러스터 전체에서 한개의 issuer를 사용가능하게

Issuer : namespace마다 하나의 issuer를 생성해서 사용하게

예전에는 certificate를 따로 만들고 이 이름을 ingress에 넣어주어서 생성을 햇으나 anotation이 생겼다.

Annotated Ingress resourcecert-manager

• cert-manager.io/issuer: the name of an Issuer to acquire the certificate required for this Ingress. The Issuer must be in the same namespace as the Ingress resource.

• cert-manager.io/cluster-issuer: the name of a ClusterIssuer to acquire the certificate required for this Ingress. It does not matter which namespace your Ingress resides, as ClusterIssuers are non-namespaced resources.

이걸 사용하면 하나로 처리가 가능하다.

---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: test-ingress
  annotations:
    kubernetes.io/ingress.class: nginx
    certmanager.k8s.io/cluster-issuer: "dns-issuer-aws-live"
spec:
  tls:
    - hosts:
        - test.your-domain.com
      secretName: test-tls
  rules:
    - host: test.your-domain.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: ngnix-service
                port:
                  number: 80