unable to access kubernetes dashboard via token

Question

1. I have setup a kubernetes using kubeadm v1.8.5
2. Setup a dashboard using:

wget https://raw.githubusercontent.com/kubernetes/dashboard/v1.8.0/src/deploy/recommended/kubernetes-dashboard.yaml`

kubectl create -f kubernetes-dashboard.yaml

kubectl create -f kubernetes-dashboard-admin.rbac.yaml

3. Then setup kubectl proxy, using http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/ as recommended.

4. When I am trying to login using kubernetes-dashboard-admin token. Token was received by using the command:

    kubectl -n kube-system get secret | grep -i dashboard-admin | awk '{print $1}' | xargs -I {} 
    kubectl -n kube-system describe secret {}

Here comes my problem: I CANT access the dashboard via token, when I paste the token and click "Signin" botton, nothing happened. And I get nothing in my log[using tail -f /var/log/messages and journalctl -xeu kubelet]. I am a newbee on k8s, maybe someone could tell me where the log is?

这是我的k8s cluster-info：

[root @ k8s-1 pki]＃ kubectl cluster-info

Kubernetes master is running at https://172.16.1.15:6443
KubeDNS is running at https://172.16.1.15:6443/api/v1/namespaces/kube-system/services/kube-dns/proxy
kubernetes-dashboard is running at https://172.16.1.15:6443/api/v1/namespaces/kube-system/services/kubernetes-dashboard/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

[root @ k8s-1 pki]＃ kubectl get nodes

NAME      STATUS    ROLES     AGE       VERSION
k8s-1     Ready     master    4d        v1.8.5
k8s-2     Ready     <none>    4d        v1.8.5
k8s-3     Ready     <none>    4d        v1.8.5

[root @ k8s-1 pki]＃ kubectl get pods --all-namespaces

NAMESPACE     NAME                                    READY     STATUS    RESTARTS   AGE
kube-system   etcd-k8s-1                              1/1       Running   2          4d
kube-system   kube-apiserver-k8s-1                    1/1       Running   2          4d
kube-system   kube-controller-manager-k8s-1           1/1       Running   1          4d
kube-system   kube-dns-545bc4bfd4-94vxx               3/3       Running   3          4d
kube-system   kube-flannel-ds-97frd                   1/1       Running   2          4d
kube-system   kube-flannel-ds-bl9tp                   1/1       Running   2          4d
kube-system   kube-flannel-ds-bn9hp                   1/1       Running   1          4d
kube-system   kube-proxy-9ncdm                        1/1       Running   0          4d
kube-system   kube-proxy-qjm9k                        1/1       Running   1          4d
kube-system   kube-proxy-rknz4                        1/1       Running   0          4d
kube-system   kube-scheduler-k8s-1                    1/1       Running   2          4d
kube-system   kubernetes-dashboard-7486b894c6-tszq9   1/1       Running   0          2h

kubernetes-dashboard-admin-rbac.yaml是：

[root @ k8s-1信息中心]＃ cat kubernetes-dashboard-admin.rbac.yaml

---
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
  name: kubernetes-dashboard-admin
  namespace: kube-system

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard-admin
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    k8s-app: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard-admin
  namespace: kube-system

有什么建议么？谢谢！！！

Answer 1

试试这个令牌（输出）：

 kubectl -n kube-system get secret |grep  kubernetes-dashboard-token |cut -f1 -d ' ' |  xargs kubectl -n kube-system describe  secret

如果不起作用，请使用此令牌（输出）尝试/测试登录：

kubectl -n kube-system get secret |grep  namespace-controller-token  |cut -f1 -d ' ' |  xargs kubectl -n kube-system describe  secret

祝你好运..

Answer 2

尝试使用https连接，我有同样的问题，这对我有用

Kubernetes手册：

注意：仪表板不应使用kubectl proxy命令公开公开，因为它仅允许HTTP连接。对于非localhost和127.0.0.1的域，将无法登录。单击登录页面上的“登录”按钮后，将不会进行任何操作。仅当通过HTTPS访问仪表板或域为localhost或127.0.0.1时，登录才可用。出于安全原因，以这种方式完成此操作。关闭会按预期进行。

Answer 3

您应该首先创建一个管理员用户并向其添加 cluster-admin 集群角色绑定：

使用这些文件admin-user.yaml和admin-user-clusterrolebinding.yaml来创建具有 cluster-admin 集群角色绑定的管理员用户：

[root@k8s-1 kubernetes-via-kubeadm]# kubectl create -f admin-user.yaml
serviceaccount "admin-user" created

[root@k8s-1 kubernetes-via-kubeadm]# kubectl create -f admin-user-clusterrolebinding.yaml 
clusterrolebinding "admin-user" created

要获取此管理员用户的令牌：

[root@k8s-1 kubernetes-via-kubeadm]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}') | grep ^token: | sed 's/token:[ ]*/Token:\n/'
Token:
eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLW1oNzIyIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiIwNWM0ZDZmZC0yZjYyLTExZTgtYTMxNi1jMDNmZDU2MmJiNzciLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.butKxegADx3JQvKpn9Prf7RL_SoxaEyi_scYOvXurm4BAwEj8zfC9a7djqQ9mBtd5cQHlljvMb-3qFc6UPOzAwR8fc5khk-nAkH-5XeahpT8WsyxMcKxqLuyAg8gh4ZtMKvBPk9kOWDtyRBzAeGkisbLxr43ecKO71F5G8D7HR2UGSm-x4Pvhq0uqj8GyIcHw902Ti92BPuBRf-SyTl8uDCQJSDkS5Tru5w0p82borNuVXd1mmDwuI87ApQrqXTY9rbJ61m8iTr0kKJBqw5bHAUAhxwAVtVEKQNNKT6cxWp1FlhHbNkM9bhcj1qj8bN1QCMjPWlWKj7NkPbbBAJthQ

您可以使用该令牌登录您的 kubernetes-dashboard。