diff --git a/metrics-server/values.yaml b/metrics-server/values.yaml
index 35913e5..8dd45e6 100644
--- a/metrics-server/values.yaml
+++ b/metrics-server/values.yaml
@@ -208,7 +208,7 @@ tls:
   # - `existingSecret` : Reuse an existing secret. No new secret will be created
   type: "cert-manager"
   # Kubernetes cluster domain. Used to configure Subject Alt Names for the certificate
-  clusterDomain: cluster.local
+  clusterDomain: grxe.io
 
   certManager:
     # Automatically add the cert-manager.io/inject-ca-from annotation to the APIService resource.
@@ -216,11 +216,11 @@ tls:
     addInjectorAnnotations: true
     existingIssuer:
       # Use an existing cert-manager issuer
-      enabled: false
+      enabled: true
       # Kind of the existing cert-manager issuer
-      kind: "Issuer"
+      kind: "ClusterIssuer"
       # Name of the existing cert-manager issuer
-      name: "my-issuer"
+      name: "letsencrypt-prod"
     # Set the requested duration (i.e. lifetime) of the Certificate.
     # See https://cert-manager.io/docs/reference/api-docs/#cert-manager.io/v1.CertificateSpec
     duration: ""