Install and upgrade cert-manager

Prereqs

If you have a namespace named elx-cert-manager you first need to remove some resources.

kubectl -n elx-cert-manager delete svc cert-manager cert-manager-webhook
kubectl -n elx-cert-manager delete deployments.apps cert-manager cert-manager-cainjector cert-manager-webhook
kubectl delete namespace elx-cert-manager

Install

To install cert-manager run

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.12.0/cert-manager.yaml

This will install cert-manager in the cert-manager namespace.

To verify the installation is easily done with cmctl (cert-manager CLI https://cert-manager.io/docs/reference/cmctl/#installation)

cmctl check api

If everything is working you should get this message The cert-manager API is ready

You can also verify it manually following this guide (https://cert-manager.io/docs/installation/verify/#manual-verification)

Upgrade

To upgrade cert-manager installed using our instructions (static manifest) follow the instructions here https://cert-manager.io/docs/installation/upgrading/#upgrading-using-static-manifests