I had followed the installation process as described in the blog for installing kubernetes on Ubuntu VM.
I am getting the pod status as this... coredn issues.
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-68fb79bcf6-24wr9 0/1 CrashLoopBackOff 7 15m
kube-system coredns-68fb79bcf6-6gzmt 0/1 CrashLoopBackOff 7 15m
kube-system etcd-kmaster 1/1 Running 0 16m
kube-system kube-apiserver-kmaster 1/1 Running 0 17m
kube-system kube-controller-manager-kmaster 1/1 Running 0 17m
kube-system kube-flannel-ds-amd64-q49vc 1/1 Running 0 16m
kube-system kube-proxy-mfqj7 1/1 Running 0 17m
kube-system kube-scheduler-kmaster 1/1 Running 0 16m