--- # CA certificate for signing other certificates apiVersion: cert-manager.io/v1 kind: Certificate metadata: name: selfsigned-ca namespace: cert-manager spec: isCA: true commonName: f3s-lan-ca secretName: selfsigned-ca-secret privateKey: algorithm: RSA size: 4096 issuerRef: name: selfsigned-issuer kind: ClusterIssuer group: cert-manager.io duration: 87600h # 10 years renewBefore: 720h # 30 days