Kubernetes: настройка cert-manager с Cloudflare

Сниппеты настройки cert-manager с Cloudflare

Создаем secret c api-токеном Cloudflare (User Profile > API Tokens > API Tokens) в namespace cert-manager:

apiVersion: v1
data:
  api-key: KEY_ON_BASE64
kind: Secret
metadata:
  name: cloudflare-api-key-secret
  namespace: cert-manager
type: Opaque

Для выпуска сертификата запустим следующий манифест

apiVersion: cert-manager.io/v1alpha2
kind: ClusterIssuer
metadata:
  name: letsencrypt-4admin-space
spec:
  acme:
    email: EMAIL_FOR_LETSENCRYPT
    server: https://acme-v02.api.letsencrypt.org/directory
    privateKeySecretRef:
      name: letsencrypt-4admin-space
    solvers:
      - selector: {}
        dns01:
          cloudflare:
            email: CLOUDFLARE_EMAIL
            apiTokenSecretRef:
              name: cloudflare-api-key-secret
              key: api-key

Сертификат

apiVersion: cert-manager.io/v1alpha2
kind: Certificate
metadata:
  name: 4admin-space
  namespace: default
spec:
  secretName: 4admin-space-tls
  issuerRef:
    name: letsencrypt-4admin-space
    kind: ClusterIssuer
  commonName: "*.4admin.space"
  dnsNames:
    - 4admin.space
    - "*.4admin.space"

Дебаг проблем с выпусом сертификата в оф документации