Deploy cert-manager

In this section you will deploy cert-manager. cert-manager is going to manage SSL certificates for you, either self-signed or issued by Let’s Encrypt.


If you already have an SSL certificate you are managing yourself, you may proceed to the What’s Next section.


  1. Go to your GitOps repository, inside your rok-tools management environment:

    root@rok-tools:~# cd ~/ops/deployments
  2. Specify a valid email for your ACME account:

    root@rok-tools:~/ops/deployments# export ACME_ACCOUNT_EMAIL=<EMAIL>

    Replace <EMAIL> with a valid email address. For example:

    root@rok-tools:~/ops/deployments# export
  3. Update the Let’s Encrypt ClusterIssuer to use a valid email address:

    root@rok-tools:~/ops/deployments# rok-j2 \ > rok/cert-manager/cert-manager/overlays/deploy/cluster-issuer-letsencrypt-prod.yaml.j2 > -o rok/cert-manager/cert-manager/overlays/deploy/cluster-issuer-letsencrypt-prod.yaml
  4. Edit rok/cert-manager/cert-manager/overlays/deploy/kustomization.yaml and enable both self-signed and Let’s Encrypt ClusterIssuers:

    resources: - cluster-issuer-self-signed.yaml - cluster-issuer-letsencrypt-prod.yaml
  5. Commit your changes:

    root@rok-tools:~/ops/deployments# git commit -am "Configure cert-manager"
  6. Install cert-manager resources along with the two ClusterIssuers:

    root@rok-tools:~/ops/deployments# rok-deploy --apply rok/cert-manager/cert-manager/overlays/deploy


  1. Verify that cert-manager is up-and-running. Check that field READY is 1/1 for the corresponding deployments:

    root@rok-tools:~/ops/deployments# kubectl get deploy -n cert-manager NAME READY UP-TO-DATE AVAILABLE AGE cert-manager 1/1 1 1 1m cert-manager-cainjector 1/1 1 1 1m cert-manager-webhook 1/1 1 1 1m
  2. Verify that your ACME account was registered successfully by inspecting the status condition on the Let’s Encrypt ClusterIssuer:

    root@rok-tools:~/ops/deployments# kubectl describe clusterissuer letsencrypt-prod ... Status: Acme: ... Conditions: ... Message: The ACME account was registered with the ACME server Reason: ACMEAccountRegistered Status: True Type: Ready


You have successfully installed cert-manager and configured it with a self-signed and a Let’s Encrypt ClusterIssuer.

What’s Next

The next step is to expose Istio, our service mesh.