grpc-xds/k8s/host-certs/overlays/tls-cert-manager/certificate.yaml

# Copyright 2024 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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# Ref: https://cert-manager.io/docs/reference/api-docs/#cert-manager.io/v1.Certificate

apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: host
  namespace: host-certs # kpt-set: ${host-certs-namespace}
  labels:
    app.kubernetes.io/component: host-certs
spec:
  commonName: host
  duration: 24h
  renewBefore: 8h
  dnsNames:
  - host
  - host.host-certs # kpt-set: host.${host-certs-namespace}
  uris:
  - spiffe://grpc-xds.example.com/ns/host-certs/sa/host # kpt-set: spiffe://${project-id}.svc.id.goog/ns/${host-certs-namespace}/sa/host
  secretName: host-certificate
  issuerRef:
    name: root-ca
    kind: ClusterIssuer
    group: cert-manager.io
  isCA: false
  usages:
  # https://cert-manager.io/docs/reference/api-docs/#cert-manager.io/v1.KeyUsage
  - digital signature
  - key encipherment
  - key agreement
  # https://cert-manager.io/docs/usage/certificate/#x509-key-usages-and-extended-key-usages
  - server auth # in case we want to run an xDS-enabled gRPC server on this pod
  - client auth
  privateKey:
    algorithm: ECDSA
    encoding: PKCS8
    rotationPolicy: Always
    size: 256