Kubernetes Dashboard 设置用户密码登陆

时间：2019-05-21 19:12:59 阅读：728 评论：0 收藏：0 [点我收藏+]

标签（空格分隔）： Kubernetes
2019年05月20日

K8s 文档
 K8s 1.13源码安装
 k8s dashboard token访问

仪表板是基于Web的Kubernetes用户界面。您可以使用仪表板将容器化应用程序部署到Kubernetes集群，对容器化应用程序进行故障排除，并管理集群本身及其伴随资源。您可以使用仪表板来概述群集上运行的应用程序，以及创建或修改单个Kubernetes资源（例如部署，作业，守护进程等）。例如，您可以使用部署向导扩展部署，启动滚动更新，重新启动Pod或部署新应用程序。

技术图片

默认Kubernetes UI界面是使用token登陆，但是由于token相比较麻烦。我们这里使用密码登陆

</br>

1.首先确保K8S集群内部一切正常

[root@i4t ~]# kubectl get node
NAME                   STATUS   ROLES    AGE   VERSION
yzsjhl82-138.opi.com   Ready    <none>   22h   v1.13.5
yzsjhl82-139.opi.com   Ready    <none>   22h   v1.13.5
yzsjhl82-140.opi.com   Ready    <none>   22h   v1.13.5
yzsjhl82-142.opi.com   Ready    <none>   22h   v1.13.5

[root@i4t ~]# kubectl get pod --all-namespaces
NAMESPACE     NAME                          READY   STATUS    RESTARTS   AGE
default       busybox                       1/1     Running   23         22h
kube-system   coredns-d7964c8db-2t8wl       1/1     Running   1          22h
kube-system   coredns-d7964c8db-sbztp       1/1     Running   1          22h
kube-system   kube-flannel-ds-amd64-cv5hx   1/1     Running   2          22h
kube-system   kube-flannel-ds-amd64-f2f7x   1/1     Running   2          22h
kube-system   kube-flannel-ds-amd64-vmm74   1/1     Running   2          22h
kube-system   kube-flannel-ds-amd64-zgfmq   1/1     Running   1          22h

2.配置
首先需要说明一点，默认kubernetes Dashboard是需要token登陆。不方便登记，我们可以让dashboard使用用户密码验证登陆

k8s dashboard 搭建

技术图片

需要注意几点

修改apiserver

创建用户密码文件

创建yaml文件

[一] 在master上节点上创建文件（用户密码文件）

cat /etc/kubernetes/basic_auth_file
admin,admin,1
cyh,cyh,2

#前面为用户，后面为密码，数字为用户ID不可重复

[二] 在所有master的apiserver启动文件添加一行配置

vim /usr/lib/systemd/system/kube-apiserver.service
--basic-auth-file=/etc/kubernetes/basic_auth_file 
#添加完毕后重启api-server

这里需要说明，以上操作在所有master上执行,在所有节点操作是为了防止有pod飘到非master节点，当然也可以做pod亲和力

[三]创建yaml文件

wget http://down.i4t.com/k8s-passwd-dashboard.yaml| kubectl apply -f k8s-passwd-dashboard.yaml

为了防止地址失效，我这里在手动cp一份

# ------------------- 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-dashboard2-key-holder‘ secret.
- apiGroups: [""]
  resources: ["secrets"]
  verbs: ["create"]
  # Allow Dashboard to create ‘kubernetes-dashboard2-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-dashboard2-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/v1beta2
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: mirrorgooglecontainers/kubernetes-dashboard-amd64:v1.8.3
        ports:
        - containerPort: 8443
          protocol: TCP
        args:
          - --auto-generate-certificates
          - --authentication-mode=basic
          # 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:
  type: NodePort
  ports:
    - port: 80
      targetPort: 8443
      nodePort: 30000
  selector:
    k8s-app: kubernetes-dashboard

我们可以用过下面命令进行检查
kubectl get pod,svc -n kube-system
技术图片