09-2.部署 dashboard 插件

cd /opt/k8s/work/kubernetes/
tar -xzvf kubernetes-src.tar.gz

cd /opt/k8s/work/kubernetes/cluster/addons/dashboard

$ cat dashboard-service.yaml
apiVersion: v1
kind: Service
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  type: NodePort # 增加这一行
  selector:
    k8s-app: kubernetes-dashboard
  ports:
  - port: 443
    targetPort: 8443

$ ls *.yaml
dashboard-configmap.yaml  dashboard-controller.yaml  dashboard-rbac.yaml  dashboard-secret.yaml  dashboard-service.yaml

$ kubectl apply -f  .

$ kubectl get deployment kubernetes-dashboard  -n kube-system
NAME                   DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
kubernetes-dashboard   1         1         1            1           2m

$ kubectl --namespace kube-system get pods -o wide
NAME                                    READY   STATUS    RESTARTS   AGE   IP            NODE             NOMINATED NODE   READINESS GATES
coredns-5b969f4c88-jb6jg                1/1     Running   0          72m   172.30.80.3   zhangjun-k8s01   <none>           <none>
kubernetes-dashboard-85bcf5dbf8-5l56v   1/1     Running   0          27s   172.30.80.6   zhangjun-k8s01   <none>           <none>

$ kubectl get services kubernetes-dashboard -n kube-system
NAME                   TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)         AGE
kubernetes-dashboard   NodePort   10.254.249.138   <none>        443:32731/TCP   42s

$ kubectl exec --namespace kube-system -it kubernetes-dashboard-85bcf5dbf8-5l56v  -- /dashboard --help # kubernetes-dashboard-85bcf5dbf8-5l56v 为 pod 名称
2019/05/26 09:12:16 Starting overwatch
Usage of /dashboard:
      --alsologtostderr                  log to standard error as well as files
      --api-log-level string             Level of API request logging. Should be one of 'INFO|NONE|DEBUG'. Default: 'INFO'. (default "INFO")
      --apiserver-host string            The address of the Kubernetes Apiserver to connect to in the format of protocol://address:port, e.g., http://localhost:8080. If not specified, the assumption is that the binary runs inside a Kubernetes cluster and local discovery is attempted.
      --authentication-mode strings      Enables authentication options that will be reflected on login screen. Supported values: token, basic. Default: token.Note that basic option should only be used if apiserver has '--authorization-mode=ABAC' and '--basic-auth-file' flags set. (default [token])
      --auto-generate-certificates       When set to true, Dashboard will automatically generate certificates used to serve HTTPS. Default: false.
      --bind-address ip                  The IP address on which to serve the --secure-port (set to 0.0.0.0 for all interfaces). (default 0.0.0.0)
      --default-cert-dir string          Directory path containing '--tls-cert-file' and '--tls-key-file' files. Used also when auto-generating certificates flag is set. (default "/certs")
      --disable-settings-authorizer      When enabled, Dashboard settings page will not require user to be logged in and authorized to access settings page.
      --enable-insecure-login            When enabled, Dashboard login view will also be shown when Dashboard is not served over HTTPS. Default: false.
      --enable-skip-login                When enabled, the skip button on the login page will be shown. Default: false.
      --heapster-host string             The address of the Heapster Apiserver to connect to in the format of protocol://address:port, e.g., http://localhost:8082. If not specified, the assumption is that the binary runs inside a Kubernetes cluster and service proxy will be used.
      --insecure-bind-address ip         The IP address on which to serve the --port (set to 0.0.0.0 for all interfaces). (default 127.0.0.1)
      --insecure-port int                The port to listen to for incoming HTTP requests. (default 9090)
      --kubeconfig string                Path to kubeconfig file with authorization and master location information.
      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
      --log_dir string                   If non-empty, write log files in this directory
      --logtostderr                      log to standard error instead of files
      --metric-client-check-period int   Time in seconds that defines how often configured metric client health check should be run. Default: 30 seconds. (default 30)
      --port int                         The secure port to listen to for incoming HTTPS requests. (default 8443)
      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
      --system-banner string             When non-empty displays message to Dashboard users. Accepts simple HTML tags. Default: ''.
      --system-banner-severity string    Severity of system banner. Should be one of 'INFO|WARNING|ERROR'. Default: 'INFO'. (default "INFO")
      --tls-cert-file string             File containing the default x509 Certificate for HTTPS.
      --tls-key-file string              File containing the default x509 private key matching --tls-cert-file.
      --token-ttl int                    Expiration time (in seconds) of JWE tokens generated by dashboard. Default: 15 min. 0 - never expires (default 900)
  -v, --v Level                          log level for V logs
      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging
pflag: help requested
command terminated with exit code 2

$ kubectl proxy --address='localhost' --port=8086 --accept-hosts='^*$'
Starting to serve on 127.0.0.1:8086

$ kubectl cluster-info
Kubernetes master is running at https://127.0.0.1:8443
CoreDNS is running at https://127.0.0.1:8443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
kubernetes-dashboard is running at https://127.0.0.1:8443/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy

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

kubectl create sa dashboard-admin -n kube-system
kubectl create clusterrolebinding dashboard-admin --clusterrole=cluster-admin --serviceaccount=kube-system:dashboard-admin
ADMIN_SECRET=$(kubectl get secrets -n kube-system | grep dashboard-admin | awk '{print $1}')
DASHBOARD_LOGIN_TOKEN=$(kubectl describe secret -n kube-system ${ADMIN_SECRET} | grep -E '^token' | awk '{print $2}')
echo ${DASHBOARD_LOGIN_TOKEN}

source /opt/k8s/bin/environment.sh
# 设置集群参数
kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/cert/ca.pem \
  --embed-certs=true \
  --server=${KUBE_APISERVER} \
  --kubeconfig=dashboard.kubeconfig

# 设置客户端认证参数，使用上面创建的 Token
kubectl config set-credentials dashboard_user \
  --token=${DASHBOARD_LOGIN_TOKEN} \
  --kubeconfig=dashboard.kubeconfig

# 设置上下文参数
kubectl config set-context default \
  --cluster=kubernetes \
  --user=dashboard_user \
  --kubeconfig=dashboard.kubeconfig

# 设置默认上下文
kubectl config use-context default --kubeconfig=dashboard.kubeconfig