argocd-test/cert-manager/base/mziesel-ca.yaml

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: mziesel-root-ca-issuer
spec:
  selfSigned: {}
---
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: mziesel-ca
spec:
  isCA: true
  commonName: mziesel-ca
  secretName: mziesel-root-secret
  privateKey:
    algorithm: ECDSA
    size: 256
  issuerRef:
    name: mziesel-root-ca-issuer
    kind: ClusterIssuer
    group: cert-manager.io
---
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: mziesel-ca-issuer
spec:
  ca:
    secretName: mziesel-root-secret