Install cert-manager via Helm

Install cert-manager with CRDs into its own namespace

helm install cert-manager jetstack/cert-manager --namespace cert-manager --create-namespace --set installCRDs=true

More cert-manager commands

Check cert-manager pods

kubectl get pods -n cert-manager

Verify all cert-manager components are running
List certificates

kubectl get certificates -A

List all Certificate resources across namespaces
Describe certificate

kubectl describe certificate my-cert -n default

Show status and events for a Certificate resource
List certificate requests

kubectl get certificaterequests -A

List all CertificateRequest objects
Create ClusterIssuer (Let's Encrypt)

kubectl apply -f clusterissuer-letsencrypt.yaml

Apply a ClusterIssuer manifest for Let's Encrypt ACME