I want to add a extra DNS server as a pod (internal for the other pods).
Kube-DNS works fine, the pods can resolve the short-names of the others and could find the extra dns-pod by : #>host dns
So far so good. The resolve.conf on all of the pods have only the coredns entry (namesever CLUSTER_IP).
I I manually add a second name server to the resolve.conf but it do not work. Now I thought about a extra rule in the Kube-DNS to forward requests to the dns-pod. But have no idea if this is the right way to go. Furthermore I do not know the ip of the dns-pod during auto-creation of the complete setup (terraform).
Would be nice to receive some tips how this should be done.
best
Setup a Service for your DNS pod, specifying a cluster IP in your allocated cluster service range.
apiVersion: v1
kind: Service
metadata:
name: my-dns-service
spec:
selector:
app: dns-app
ports:
- protocol: UDP
port: 53
targetPort: 53
- protocol: TCP
port: 53
targetPort: 53
clusterIP: 10.233.8.8Configure CoreDNS to forward your custom domains to that cluster IP.
Modify the coredns ConfigMap to include the forward plugin
domain:53 {
errors
cache 30
forward . 10.233.8.8
}
internal.domain:53 {
errors
cache 30
forward . 10.233.8.8
}