The /etc/resolv.conf in my containers show "default.svc.cluster.local", if I do an nslookup on one of my services, it shows {servicename}.default.svc.cluster.local. I was wondering what the 'svc' in the search path was referring to as I am doing an nslookup on the servicename already. I.e. is it not duplicated?
For the "cluster.local" part, how do you find the name of your cluster? I would like to know so that I can define it in my Helm template.
cluster.local is defined in a configMap coredns in kube-system namespace.
kubectl get cm coredns -n kube-system -o yaml
apiVersion: v1
data:
Corefile: |
.:53 {
errors
health {
lameduck 5s
}
ready
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
fallthrough in-addr.arpa ip6.arpa
ttl 30
}
prometheus :9153
forward . /etc/resolv.conf
cache 30
loop
reload
loadbalance
}Check the docs if you want to customize it.