I followed the steps at https://coreos.com/kubernetes/docs/1.6.1/getting-started.html to install Kubernetes on CoreOS machines.
When I get the pods, looks like everything is working fine.
./kubectl get pods --namespace=kube-system
NAME READY STATUS RESTARTS AGE
calico-node-12g51 2/2 Running 4 1h
calico-node-dtzss 2/2 Running 6 1h
calico-node-p35sl 2/2 Running 4 1h
calico-policy-controller-kh7lz 1/1 Running 2 1h
kube-apiserver-10.201.101.234 1/1 Running 3 2h
kube-controller-manager-10.201.101.234 1/1 Running 3 2h
kube-proxy-10.201.101.234 1/1 Running 3 2h
kube-proxy-10.201.101.236 1/1 Running 7 2d
kube-proxy-10.201.101.237 1/1 Running 5 1d
kube-scheduler-10.201.101.234 1/1 Running 3 2h
Then, I follow the steps at https://coreos.com/kubernetes/docs/1.6.1/deploy-addons.html to deploy DNS add-on.
After that step, I see the kube-dns pod stays at ContainerCreating status forever.
kube-dns-v20-htqvx 0/3 ContainerCreating 0 16m
./kubectl describe pod kube-dns-v20-htqvx --namespace=kube-system gives the below log.
FirstSeen LastSeen Count From SubObjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
16m 16m 1 default-scheduler Normal Scheduled Successfully assigned kube-dns-v20-htqvx to 10.201.101.237
15m 15m 1 kubelet, 10.201.101.237 Warning FailedSync Error syncing pod, skipping: failed to "CreatePodSandbox" for "kube-dns-v20-htqvx_kube-system(e3f84b85-990d-11e7-9392-005056a16f20)" with CreatePodSandboxError: "CreatePodSandbox for pod \"kube-dns-v20-htqvx_kube-system(e3f84b85-990d-11e7-9392-005056a16f20)\" failed: rpc error: code = 2 desc = NetworkPlugin cni failed to set up pod \"kube-dns-v20-htqvx_kube-system\" network: Get https://10.3.0.1:443/api/v1/namespaces/kube-system/pods/kube-dns-v20-htqvx: dial tcp 10.3.0.1:443: i/o timeout"
I see the dial tcp 10.3.0.1:443: i/o timeout error
I assume something is wrong at my installation. Can you please help?
