• Kubernetes安装dashboard


    官网更新了新的2.*版本,废弃了Heapster。也试着安装了一下感觉还不错,就是执行kubectl proxy的时候要改成kubectl proxy --address='node-ip' --accept-hosts='^*$',其他机器就可以访问了,否则只有安装dashboadr的机器才能访问界面。

     

    安装方法参考的文档见本文末尾,个人感觉一步一步安装一下还是挺有意思的~~

    1.安装dashboard:

     

    dashboad的yaml文件贴在这里~

    # 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.
    
    # ------------------- 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
      namespace: kube-system
    
    ---
    # ------------------- Dashboard Role & Role Binding ------------------- #
    
    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"]
      resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs"]
      verbs: ["get", "update", "delete"]
      # Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
    - 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/v1
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
      name: kubernetes-dashboard
      namespace: kube-system
    spec:
      replicas: 1
      revisionHistoryLimit: 10
      selector:
        matchLabels:
          k8s-app: kubernetes-dashboard
      template:
        metadata:
          labels:
            k8s-app: kubernetes-dashboard
        spec:
          containers:
          - name: kubernetes-dashboard
            image: hati/kubernetes-dashboard-amd64:v1.10.1
            ports:
            - containerPort: 8443
              protocol: TCP
            args:
              - --auto-generate-certificates
              # Uncomment the following line to manually specify Kubernetes API server Host
              # If not specified, Dashboard will attempt to auto discover the API server and connect
              # to it. Uncomment only if the default does not work.
              # - --apiserver-host=http://my-address:port
            volumeMounts:
            - name: kubernetes-dashboard-certs
              mountPath: /certs
              # Create on-disk volume to store exec logs
            - mountPath: /tmp
              name: tmp-volume
            livenessProbe:
              httpGet:
                scheme: HTTPS
                path: /
                port: 8443
              initialDelaySeconds: 30
              timeoutSeconds: 30
          volumes:
          - name: kubernetes-dashboard-certs
            secret:
              secretName: kubernetes-dashboard-certs
          - name: tmp-volume
            emptyDir: {}
          serviceAccountName: kubernetes-dashboard
          # Comment the following tolerations if Dashboard must not be deployed on master
          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: 443
          targetPort: 8443
      selector:
        k8s-app: kubernetes-dashboard
    

      

    wget -O kubernetes-dashboard.yaml https://raw.githubusercontent.com/kubernetes/dashboard/master/aio/deploy/recommended/kubernetes-dashboard.yaml
    突然发现上面链接失效了……
    sed -i "s/k8s.gcr.io/hati/g" kubernetes-dashboard.yaml
    kubectl apply -f kubernetes-dashboard.yaml
    kubectl get pods -n kube-system

    2.创建服务账户,绑定集群角色:

    service_account.yaml

    1 apiVersion: v1
    2  kind: ServiceAccount
    3  metadata:
    4    name: admin-user
    5    namespace: kube-system

    clusterrolebinding.yaml

     1 apiVersion: rbac.authorization.k8s.io/v1
     2  kind: ClusterRoleBinding
     3  metadata:
     4    name: admin-user
     5  roleRef:
     6    apiGroup: rbac.authorization.k8s.io
     7    kind: ClusterRole
     8    name: cluster-admin
     9  subjects:
    10  - kind: ServiceAccount
    11    name: admin-user
    12    namespace: kube-system
    kubectl apply -f service_account.yaml
    kubectl apply -f clusterrolebinding.yaml #Bearer Token kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}')

    备注:copy生成的token,用于登录dashboad。

    3.生成用户证书

    过程中会要求输入导出证书时用到的密钥,请务必记住。

    grep 'client-certificate-data' ~/.kube/config | head -n 1 | awk '{print $2}' | base64 -d >> kubecfg.crt
    grep 'client-key-data' ~/.kube/config | head -n 1 | awk '{print $2}' | base64 -d >> kubecfg.key
    openssl pkcs12 -export -clcerts -inkey kubecfg.key -in kubecfg.crt -out kubecfg.p12 -name "kubernetes-client"
    echo "Please install the kubecfg.p12 certificate in your browser, and then restart browser."

    4.安装图形化插件heapster

    wget -O grafana.yaml https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/grafana.yaml
    wget -O heapster.yaml https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/heapster.yaml
    wget -O influxdb.yaml https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/influxdb/influxdb.yaml
    wget -O heapster-rbac.yaml https://raw.githubusercontent.com/kubernetes/heapster/master/deploy/kube-config/rbac/heapster-rbac.yaml
     ​
    # Set port ype as "NodePort" for test environment
    sed -i "s/# type: NodePort/type: NodePort/g" grafana.yaml
    # Set only use API server proxy to access grafana
    sed -i "s/value: //#value: //g" grafana.yaml
    sed -i "s/# #value: /api/value: /api/g" grafana.yaml
    sed -i "s/name: ca-certificates/name: ca-certs/g" grafana.yaml
    sed -i "s/heapster-grafana-amd64:v5.0.4/heapster-grafana-amd:v4.4.3/g" grafana.yaml
    sed -i "s/https://kubernetes.default/https://kubernetes.default:443?useServiceAccount=true&kubeletHttps=true&kubeletPort=10250&insecure=true/g" heapster.yaml
    sed -i "s/name: system:heapster/name: cluster-admin/g" heapster-rbac.yaml
     ​
    #Replace k8s.gcr.io image with hati
    sed -i "s/k8s.gcr.io/hati/g" grafana.yaml
    sed -i "s/k8s.gcr.io/hati/g" heapster.yaml
    sed -i "s/k8s.gcr.io/hati/g" influxdb.yaml
    kubectl apply -f grafana.yaml
    kubectl apply -f heapster.yaml
    kubectl apply -f influxdb.yaml
    kubectl apply -f heapster-rbac.yaml
    kubectl get pods -n kube-system
    kubectl cluster-info

     将生成的用户证书kubecfg.p12导入到浏览器中(以Chrome为例,设置->高级->管理证书->导入),然后访问地址(ip和port做相应的更改):

     https://<master-ip>:<apiserver-port>/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/

    在令牌处输入保存的token登录dashboard:

     

     

     参考文档:

    https://blog.csdn.net/nklinsirui/article/details/80806131

     

     

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  • 原文地址:https://www.cnblogs.com/hati/p/10469297.html
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