I have faced an issue with resolving services host between with kubernetes on minikube.
So from the inside the pod I cannot wget web-server:8081/endpoint. But I can access the same server directly by IP address like this wget 10.0.0.81:8081/endpoint.
After troubleshooting the issue I have found that inside of the pod /etc/resolve.conf file the nameserver is set to 10.96.0.10. Here is how it looks:
nameserver 10.96.0.10
search default.svc.cluster.local svc.cluster.local cluster.local
options ndots:5
When the Cluster IP of kube-dns service is 10.0.0.10.
After changing manually the nameserver on the pod to 10.0.0.10 I cat do wget web-server:8081/endpoint.
Why is it set to the wrong IP address and how fix it?
The problem was that I updated minikube without minikube delete.
After minikube delete and minikube start the DNS service is getting the IP address 10.96.0.10 the same as is set in the pod's /etc/resolve.conf.