容器云----kubernetes-dashboard（kubernetes管理界面）

容器云----kubernetes-dashboard（kubernetes管理界面）

首先，需要搭建好完成的kubernetes集群，详见文章容器云----kubernetes+docker-ce。

一.创建dashboard的yaml文件

vim  kubernetes-dashboard.yaml

# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Configuration to deploy release version of the Dashboard UI compatible with
# Kubernetes 1.8.
#
# Example usage: kubectl create -f <this_file>

# ------------------- Dashboard Secret ------------------- #

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-certs
  namespace: kube-system
type: Opaque

---
# ------------------- Dashboard Service Account ------------------- #

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: kubernetes-dashboard-minimal
  namespace: kube-system
rules:
  # Allow Dashboard to create 'kubernetes-dashboard-key-holder' secret.
- apiGroups: [""]
  resources: ["secrets"]
  verbs: ["create"]
  # Allow Dashboard to create 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
  resources: ["configmaps"]
  verbs: ["create"]
  # Allow Dashboard to get, update and delete Dashboard exclusive secrets.
- apiGroups: [""]
  resources: ["secrets"]
  verbs: ["get", "update", "delete"]
- apiGroups: [""]
  resources: ["configmaps"]
  resourceNames: ["kubernetes-dashboard-settings"]
  verbs: ["get", "update"]
  # Allow Dashboard to get metrics from heapster.
- apiGroups: [""]
  resources: ["services"]
  resourceNames: ["heapster"]
  verbs: ["proxy"]
- apiGroups: [""]
  resources: ["services/proxy"]
  resourceNames: ["heapster", "http:heapster:", "https:heapster:"]
  verbs: ["get"]

---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: kubernetes-dashboard-minimal
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: kubernetes-dashboard-minimal
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard
  namespace: kube-system

---
# ------------------- Dashboard Deployment ------------------- #

kind: Deployment
apiVersion: apps/v1beta2
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: kubernetes-dashboard
  template:
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
    spec:
      serviceAccountName: kubernetes-dashboard
      containers:
      - name: kubernetes-dashboard
        image: k8s.gcr.io/kubernetes-dashboard-amd64:v1.8.3
        ports:
        - containerPort: 9090
          protocol: TCP
        args:
          #- --auto-generate-certificates
        volumeMounts:
        - name: kubernetes-dashboard-certs
          mountPath: /certs
          # Create on-disk volume to store exec logs
        - mountPath: /tmp
          name: tmp-volume
        livenessProbe:
          httpGet:
            scheme: HTTP
            path: /
            port: 9090
          initialDelaySeconds: 30
          timeoutSeconds: 30
      volumes:
      - name: kubernetes-dashboard-certs
        secret:
          secretName: kubernetes-dashboard-certs
      - name: tmp-volume
        emptyDir: {}
      serviceAccountName: kubernetes-dashboard-admin
      tolerations:
      - key: node-role.kubernetes.io/master
        effect: NoSchedule

---
# ------------------- Dashboard Service ------------------- #

kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system
spec:
  ports:
    - port: 9090
      targetPort: 9090
  selector:
    k8s-app: kubernetes-dashboard

# ------------------------------------------------------------
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-external
  namespace: kube-system
spec:
  ports:
    - port: 9090
      targetPort: 9090
      nodePort: 30090
  type: NodePort
  selector:
    k8s-app: kubernetes-dashboard

二.创建dashboard的认证yaml文件

vim  kubernetes-dashboard-admin.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-admin
  namespace: kube-system

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard-admin
  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

三.启动dashboard

kubectl  apply  -f  ./kubernetes-dashboard.yaml  -f  ./kubernetes-dashboard-admin.yaml

四.查看dashboard的创建状态

kubectl get svc,pods -n kube-system | grep dashboard

service/kubernetes-dashboard-external   NodePort    10.96.28.16   <none>        9090:30090/TCP   3d
pod/kubernetes-dashboard-5cc6564db9-m98fw   1/1     Running   4          3d

kubectl describe pod kubernetes-dashboard-5cc6564db9-m98fw -n kube-system

Name:           kubernetes-dashboard-5cc6564db9-m98fw
Namespace:      kube-system
Node:           yun02/172.22.6.242
Start Time:     Sat, 10 Nov 2018 12:01:53 +0800
Labels:         k8s-app=kubernetes-dashboard
                pod-template-hash=1772120865
Annotations:    <none>
Status:         Running
IP:             10.244.1.2
Controlled By:  ReplicaSet/kubernetes-dashboard-5cc6564db9
Containers:
  kubernetes-dashboard:
    Container ID:   docker://c108de98d182217caa6ab214845f3e132737735c083d1c0e99c7e09b4e92e418
    Image:          k8s.gcr.io/kubernetes-dashboard-amd64:v1.8.3
    Image ID:       docker://sha256:0c60bcf89900cff208874ae172a972e75cedb5b1b7c99dbcf18ada134c599357
    Port:           9090/TCP
    Host Port:      0/TCP
    State:          Running
      Started:      Tue, 13 Nov 2018 14:07:15 +0800
    Last State:     Terminated
      Reason:       Error
      Exit Code:    2
      Started:      Tue, 13 Nov 2018 14:06:45 +0800
      Finished:     Tue, 13 Nov 2018 14:06:56 +0800
    Ready:          True
    Restart Count:  4
    Liveness:       http-get http://:9090/ delay=30s timeout=30s period=10s #success=1 #failure=3
    Environment:    <none>
    Mounts:
      /certs from kubernetes-dashboard-certs (rw)
      /tmp from tmp-volume (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kubernetes-dashboard-admin-token-nxgrv (ro)
Conditions:
  Type           Status
  Initialized    True 
  Ready          True 
  PodScheduled   True 
Volumes:
  kubernetes-dashboard-certs:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  kubernetes-dashboard-certs
    Optional:    false
  tmp-volume:
    Type:    EmptyDir (a temporary directory that shares a pod's lifetime)
    Medium:  
  kubernetes-dashboard-admin-token-nxgrv:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  kubernetes-dashboard-admin-token-nxgrv
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node-role.kubernetes.io/master:NoSchedule
                 node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:          <none>

可以看到，dashboard创建在172.22.6.242这台机器上。

接下来可以访问172.22.6.242:30090