Applications/kubernetes/kubernetes-dns.md

Kubernetes DNS

DNS for Services and Pods

Kubernetes creates DNS records for Services and Pods. You can contact Services with consistent DNS names instead of IP addresses.

your-service.your-namespace.svc.cluster.local

Any Pods exposed by a Service have the following DNS resolution available:

your-prod.your-service.your-namespace.svc.cluster.local

---

Custom DNS Settings

Edit coredns config map

Add entry to the Corefile: | section of the configmap/coredns in section kube-system.

.:53 {
  # ...
}
import /etc/coredns/custom/*.server

Add new config map

Example for local DNS server using the clcreative.home zone.

apiVersion: v1
kind: ConfigMap
metadata:
  name: coredns-custom
  namespace: kube-system
data:
  clcreative.server: |
    clcreative.home:53 {
      forward . 10.20.0.10
    }