cm-coredns-default.yaml.tmpl

apiVersion: v1
kind: ConfigMap
metadata:
  name: coredns-conf-default
  namespace: kube-system
data:
  default.conf: |
    # Goal: Rewrite rules for in-cluster access to a service: gitea, argocd, etc using the same FQDN as for external access

    # subdomain names e.g. gitea.cnoe.localtest.me resolves to the IP address of the kubernetes ingress service and then will become ingress-nginx-controller.ingress-nginx.svc.cluster.local
    rewrite stop {
        name regex (.*).{{ .Host }} ingress-nginx-controller.ingress-nginx.svc.cluster.local answer auto
    }

    # host name resolves to the IP address of the kubernetes ingress service
    rewrite name exact {{ .Host }} ingress-nginx-controller.ingress-nginx.svc.cluster.local