istio-gateway-certs.yaml

apiVersion: v1
kind: Namespace
metadata:
  name: istio-system
---
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: selfsigned-issuer
spec:
  selfSigned: {}
---
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: my-selfsigned-ca
  namespace: istio-system
spec:
  isCA: true
  commonName: my-selfsigned-ca
  secretName: root-secret
  privateKey:
    algorithm: ECDSA
    size: 256
  issuerRef:
    name: selfsigned-issuer
    kind: ClusterIssuer
    group: cert-manager.io
---
apiVersion: cert-manager.io/v1
kind: Issuer
metadata:
  name: my-ca-issuer
  namespace: istio-system
spec:
  ca:
    secretName: root-secret
---
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: my-selfsigned-cert
  namespace: istio-system
spec:
  commonName: my-selfsigned-cert
  dnsNames:
  - '*.example.com'
  duration: 2160h0m0s
  issuerRef:
    name: selfsigned-issuer
    kind: ClusterIssuer
    group: cert-manager.io
  privateKey:
    algorithm: RSA
    encoding: PKCS8
    size: 4096
  renewBefore: 360h0m0s
  secretName: tls-secret
  subject:
    organizations:
    - pulsar
  usages:
  - server auth
  - client auth