Cert-Manager ACME DNS01 Webhook Solver for AppsCode DNS Proxy for Cloudfare

This solver can be used when you want to use cert-manager with AppsCode DNS Proxy for Cloudfare.

Installation

cert-manager

Follow the instructions using the cert-manager documentation to install it within your cluster.

Webhook

Using public helm chart

helm repo add appscode https://charts.appscode.com/stable/
helm repo update
helm upgrade -i cert-manager-webhook-ace appscode/cert-manager-webhook-ace \
  --namespace cert-manager --create-namespace

Note: The kubernetes resources used to install the Webhook should be deployed within the same namespace as the cert-manager.

To uninstall the webhook run

helm uninstall --namespace cert-manager cert-manager-webhook-ace

Usage

Credentials

In order to access the DNS Proxy, the webhook needs an [API token] from ByteBuilders.

kubectl create secret generic ace-secret --from-literal=api-token=<YOUR_TOKEN>

Create Issuer

Create a ClusterIssuer or Issuer resource as following:

Cluster-wide Issuer

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt-staging
spec:
  acme:
    # The ACME server URL
    server: https://acme-staging-v02.api.letsencrypt.org/directory
    
    # Email address used for ACME registration
    email: [email protected] # REPLACE THIS WITH YOUR EMAIL
    
    # Name of a secret used to store the ACME account private key
    privateKeySecretRef:
      name: letsencrypt-staging

    solvers:
    - dns01:
        webhook:
          solverName: "ace"
          groupName: webhook.dns.appscode.com
          config:
            baseURL: "https://dns.byte.builders"
            apiTokenSecretRef:
              name: ace-secret
              key: api-token

By default, the API token used will be obtained from the secret in the same namespace as the webhook.

Create a certificate

Create your certificate resource as follows:

apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: example-cert
  namespace: cert-manager
spec:
  commonName: example.com
  dnsNames:
  - example.com # REPLACE THIS WITH YOUR DOMAIN
  issuerRef:
   name: letsencrypt-staging
   kind: ClusterIssuer
  secretName: example-cert

Acknowledgement

This project was forked from okteto/cert-manager-webhook-civo. The cloudflare package was copied from cert-manager project.