---
apiVersion: cert-manager.io/v1alpha2
kind: Issuer
metadata:
  name: selfsigned-issuer
  namespace: cert-manager
spec:
  selfSigned: {}
---
apiVersion: cert-manager.io/v1alpha2
kind: Certificate
metadata:
  name: ca-cert
  namespace: cert-manager
spec:
  # Secret names are always required.
  secretName: ca-cert
  duration: 87600h # 10y
  renewBefore: 360h # 15d
  isCA: true
  keySize: 2048
  keyAlgorithm: rsa
  keyEncoding: pkcs1
  commonName: cacert
  # At least one of a DNS Name, URI, or IP address is required.
  dnsNames:
  - caroot
  # Issuer references are always required.
  issuerRef:
    name: selfsigned-issuer
---
apiVersion: cert-manager.io/v1alpha2
kind: ClusterIssuer
metadata:
  name: ca-issuer
  namespace: cert-manager
spec:
  ca:
    secretName: ca-cert