Cert-Manager ACME webhook for DNSPod

Cert-manager webhook for DNSPod is a ACME webhook for cert-manager allowing users to use DNSPod for DNS01 challenge.

This is a permanent fork of qqshfox/cert-manager-webhook-dnspod which is lack of maintainence.

Features

• Updated to cert-manager 1.1.0
• Updated to client-go 0.19.4
• No hardcoding in helm chart

Tested on production environment of

• Kubernetes 1.18.3

Prerequisites

• A DNSPod APP ID and API Token
• A valid domain configured on DNSPod
• A Kubernetes cluster (v1.18+ recommended)
• Have cert-manager: >= 1.1.0 installed within your kubernetes cluster.
• Helm 3 installed on your local computer

Installation

Prepare for DNSPod

Create secret to store the API Token

kubectl --namespace cert-manager create secret generic \
  dnspod-credentials --from-literal=api-token='<DNSPOD_API_TOKEN>'

Install cert-manager-webhook-dnspod

Clone this repository:

git clone https://github.com/kaelzhang/cert-manager-webhook-dnspod.git

You need to create a values.yaml file to override the default value of groupName for the helm chart.

# The `groupName` here should be same as the value in cluster issuer below
groupName: <your group name>

helm install cert-manager-webhook-dnspod ./charts \
  --namespace cert-manager \
  -f values.yaml

Issuer

Create a production issuer (And you could create a staging letsencrypt issuer instead if necessary)

Create a cluster-issuer.yaml file with the following content:

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt-prod
spec:
  acme:
    # The ACME server URL
    server: https://acme-v02.api.letsencrypt.org/directory
    # Email address used for ACME registration
    email: <your email>
    # Name of a secret used to store the ACME account private key
    privateKeySecretRef:
      name: letsencrypt-prod
    solvers:
    - dns01:
        webhook:
          groupName: <your group name>
          solverName: dnspod
          config:
            apiID: <your dnspod api id>
            apiTokenSecretRef:
              key: api-token
              name: dnspod-credentials

And run:

kubectl create -f cluster-issuer.yaml

Certificate

Use Ingress to create the Certificate resource (Recommended)

A common use-case for cert-manager is requesting TLS signed certificates to secure your ingress resources.

This can be done by simply adding annotations to your Ingress resources and cert-manager will facilitate creating the Certificate resource for you without your concern. A small sub-component of cert-manager, ingress-shim, is responsible for this.

For details, see here

Create a ingress.yaml file with the following content:

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: demo-ingress
  namespace: default
  annotations:
    # Should be the same as metadata.name of the cluster issuer
    cert-manager.io/cluster-issuer: "letsencrypt-prod"
spec:
  tls:
  - hosts:
    - 'example.com'
    # Pick any name as you wish
    secretName: example-com-tls
  rules:
  - host: example.com
    http:
      paths:
      - path: /
        backend:
          serviceName: backend-service
          servicePort: 80

And run:

kubectl create -f ingress.yaml

Define the Certificate resource explicitly (Alternative)

If you don’t use Ingress, you could define the certificate resource your own

Create a certificate.yaml:

apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  # You could replace this name to your own
  # Pick any name as you wish
  name: example-com # for example.com
spec:
  # Pick any name as you wish
  secretName: example-com-tls
  renewBefore: 240h
  dnsNames:
    - 'example.com'
  issuerRef:
    # The cluster issuer defined above
    name: letsencrypt-prod
    kind: ClusterIssuer

And run:

kubectl create -f certificate.yaml

Check the result:

If the certificate is ready, you could see the following result:

$ kubectl get certificate
NAME          READY  SECRET           AGE
example-com   True   example-com-tls  2m1s

For contributors

Development

Before you can run the test suite, you need to download the test binaries:

wget -O- https://storage.googleapis.com/kubebuilder-tools/kubebuilder-tools-1.14.1-darwin-amd64.tar.gz | tar x -

Then rename testdata/my-custom-solver.example as testdata/my-custom-solver and fulfill the values of DNSPod appId (<your-dnspod-api-id>) and apiToken (<your-dnspod-api-token-base64>).

Now we could run tests in debug mode with dlv

# You should change GROUP_NAME and TEST_ZONE_NAME to your own ones
GROUP_NAME=yourdomain.com \
TEST_ZONE_NAME=yourdomain.com. \
dlv test . -- -test.v

Or just run tests

GROUP_NAME=yourdomain.com \
TEST_ZONE_NAME=yourdomain.com. \
go test -v