Ingress with cert-manager

gitops-kaisers-info/templates/argo-cd.yaml

         server:
           ingress: 
             enabled: true
-            hosts:
-              - argo-cd.kaisers.info
+            hostsname: argo-cd.kaisers.info
             paths:
               - /
             pathType: Prefix
-    
-          extraArgs:
-          - --insecure
+            annotations:
+              cert-manager.io/cluster-issuer: letsencrypt-staging
+            tls: true

gitops-kaisers-info/templates/letsencrypt.yaml

 apiVersion: cert-manager.io/v1
-kind: Issuer
+kind: ClusterIssuer
 metadata:
   name: letsencrypt-staging
+  namespace: cert-manager
 spec:
   acme:
     email: simon.kaiser@gmx.net # replace this