I am trying to install Kubernetes on my laptop by following the instructions on http://kubernetes.io/docs/getting-started-guides/centos/centos_manual_config/
I added the following IP's in /etc/hosts 192.168.121.9 centos-master 192.168.121.65 centos-minion-1 192.168.121.66 centos-minion-2 192.168.121.67 centos-minion-3 and have followed the procedure except for flannel installation.
I was going step by step of running instances with the following for SERVICES in etcd kube-apiserver; do systemctl restart $SERVICES systemctl enable $SERVICES systemctl status $SERVICES done
etcd started well, but kube-apiserver fails with the following error: Nov 17 14:40:11 localhost kube-apiserver: F1117 14:40:11.842367 6176 controller.go:84] Unable to perform initial IP allocation check: unable to refresh the service IP block: error #0: dial tcp 192.168.121.9:2379: i/o timeout
Tried adding 192.168.121.9 IP to the same interface in the BareMetal, but still failed.
Not sure what is the issue here..
The source of your issue is that the kube-apiserver cannot reach etcd, likely because it just started and is not completely up yet.
2379 is the client port for etcd, and 192.168.121.9 is the resolved IP for the master node.
Why etcd either isn't taking requests, or isn't reachable by kube-apiserver will require further investigation.