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Reputation: 5507

Can't access Kubernetes dashboard after reinstall it from Rancher server

The first time install Kubernetes environment from Rancher server was successful.

Removed it and installed it again, all the stack went green, but when access Kubernetes dashboard, there just a blank page.

Check dashboard's container log:

$ docker ps -a | grep dash
0b8129ff9809        gcr.io/google_containers/kubernetes-dashboard-amd64    "/dashboard --inse..."   36 seconds ago       Exited (1) 30 seconds ago                         k8s_kubernetes-dashboard_kubernetes-dashboard-5ffb9c9bb7-v5mhw_kube-system_2fe1595e-d35b-11e7-bf25-0264f6c60326_4
ab246945e1c6        gcr.io/google_containers/pause-amd64:3.0               "/pause"                 2 minutes ago        Up 2 minutes                                      k8s_POD_kubernetes-dashboard-5ffb9c9bb7-v5mhw_kube-system_2fe1595e-d35b-11e7-bf25-0264f6c60326_0

$ docker logs 0b81
2017/11/27 10:16:16 Starting overwatch
2017/11/27 10:16:16 Using in-cluster config to connect to apiserver
2017/11/27 10:16:16 Using service account token for csrf signing
2017/11/27 10:16:16 No request provided. Skipping authorization
2017/11/27 10:16:21 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

What will be the problem?

enter image description here

Addition

OS

CentOS 7

Rancher

v1.6.11

Docker

Client:
 Version:      17.09.0-ce
 API version:  1.32
 Go version:   go1.8.3
 Git commit:   afdb6d4
 Built:        Tue Sep 26 22:41:23 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.09.0-ce
 API version:  1.32 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   afdb6d4
 Built:        Tue Sep 26 22:42:49 2017
 OS/Arch:      linux/amd64
 Experimental: false

Upvotes: 0

Views: 967

Answers (2)

dsnssc
dsnssc

Reputation: 97

Downgrade docker version, your version is not supported by Rancher. Read more at this link.

Upvotes: 1

Ryan McDonough
Ryan McDonough

Reputation: 10012

The clue is in the message you received:

2017/11/27 10:16:21 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

The server requires credentials, read the troubleshooting guide to find out how to correct it.

Upvotes: 1

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