root@mth-k8smaster-01:~# kubectl logs nginx-ingress-controller-17rgp
I0127 15:23:27.796542       1 main.go:94] Using build: https://github.com/bprashanth/contrib.git - git-92b2bac
W0127 15:23:57.849224       1 main.go:118] unexpected error getting runtime information: timed out waiting for the condition
F0127 15:23:57.850864       1 main.go:121] no service with name default/default-http-backend found: the server has asked for the client to provide credentials (get services default-http-backend)
root@mth-k8smaster-01:~# kubectl logs nginx-ingress-controller-2nqkv
I0127 15:25:54.809634       1 main.go:94] Using build: https://github.com/bprashanth/contrib.git - git-92b2bac
W0127 15:26:24.857718       1 main.go:118] unexpected error getting runtime information: timed out waiting for the condition
F0127 15:26:24.859254       1 main.go:121] no service with name default/default-http-backend found: the server has asked for the client to provide credentials (get services default-http-backend)
root@mth-k8smaster-01:~# kubectl logs nginx-ingress-controller-jlxr5
I0127 15:24:19.491593       1 main.go:94] Using build: https://github.com/bprashanth/contrib.git - git-92b2bac
W0127 15:24:49.536507       1 main.go:118] unexpected error getting runtime information: timed out waiting for the condition
F0127 15:24:49.538306       1 main.go:121] no service with name default/default-http-backend found: the server has asked for the client to provide credentials (get services default-http-backend)
root@mth-k8smaster-01:~# kubectl logs nginx-ingress-controller-w1dhl
I0127 15:26:12.951903       1 main.go:94] Using build: https://github.com/bprashanth/contrib.git - git-92b2bac
W0127 15:26:42.994384       1 main.go:118] unexpected error getting runtime information: timed out waiting for the condition
F0127 15:26:42.996063       1 main.go:121] no service with name default/default-http-backend found: the server has asked for the client to provide credentials (get services default-http-backend)
root@mth-k8smaster-01:~# kubectl --namespace=kube-system logs kubernetes-dashboard-3543765157-6lj49
Using HTTP port: 9090
Creating API server client for https://10.152.183.1:443
Error while initializing connection to Kubernetes apiserver. This most likely means that the cluster is misconfigured (e.g., it has invalid apiserver certificates or service accounts configuration) or the --apiserver-host param points to a server that does not exist. Reason: the server has asked for the client to provide credentials
Refer to the troubleshooting guide for more information: https://github.com/kubernetes/dashboard/blob/master/docs/user-guide/troubleshooting.md