K8s Dashboard使用

一、安装部署

下载dashboard部署文件

wget https://github.com/kubernetes/dashboard/archive/refs/tags/v2.6.0.tar.gz

或者: wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.6.0/aio/deploy/recommended.yaml

root@easzlab-deploy:~/dashboard# cat dashboard-v2.6.0.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.

apiVersion: v1
kind: Namespace
metadata:
  name: kubernetes-dashboard

---

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

---

kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  type: NodePort
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 30000
  selector:
    k8s-app: kubernetes-dashboard

---

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

---

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-csrf
  namespace: kubernetes-dashboard
type: Opaque
data:
  csrf: ""

---

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-key-holder
  namespace: kubernetes-dashboard
type: Opaque

---

kind: ConfigMap
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-settings
  namespace: kubernetes-dashboard

---

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
rules:
  # Allow Dashboard to get, update and delete Dashboard exclusive secrets.
  - apiGroups: [""]
    resources: ["secrets"]
    resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
    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.
  - apiGroups: [""]
    resources: ["services"]
    resourceNames: ["heapster", "dashboard-metrics-scraper"]
    verbs: ["proxy"]
  - apiGroups: [""]
    resources: ["services/proxy"]
    resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
    verbs: ["get"]

---

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
rules:
  # Allow Metrics Scraper to get metrics from the Metrics server
  - apiGroups: ["metrics.k8s.io"]
    resources: ["pods", "nodes"]
    verbs: ["get", "list", "watch"]

---

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

---

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: kubernetes-dashboard
subjects:
  - kind: ServiceAccount
    name: kubernetes-dashboard
    namespace: kubernetes-dashboard

---

kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: kubernetes-dashboard
  template:
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
    spec:
      securityContext:
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: kubernetes-dashboard
          image: kubernetesui/dashboard:v2.6.0
          imagePullPolicy: Always
          ports:
            - containerPort: 8443
              protocol: TCP
          args:
            - --auto-generate-certificates
            - --namespace=kubernetes-dashboard
            - --token-ttl=43200
            # 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
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            runAsUser: 1001
            runAsGroup: 2001
      volumes:
        - name: kubernetes-dashboard-certs
          secret:
            secretName: kubernetes-dashboard-certs
        - name: tmp-volume
          emptyDir: {}
      serviceAccountName: kubernetes-dashboard
      nodeSelector:
        "kubernetes.io/os": linux
      # Comment the following tolerations if Dashboard must not be deployed on master
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule

---

kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: dashboard-metrics-scraper
  name: dashboard-metrics-scraper
  namespace: kubernetes-dashboard
spec:
  ports:
    - port: 8000
      targetPort: 8000
  selector:
    k8s-app: dashboard-metrics-scraper

---

kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: dashboard-metrics-scraper
  name: dashboard-metrics-scraper
  namespace: kubernetes-dashboard
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: dashboard-metrics-scraper
  template:
    metadata:
      labels:
        k8s-app: dashboard-metrics-scraper
    spec:
      securityContext:
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: dashboard-metrics-scraper
          image: kubernetesui/metrics-scraper:v1.0.8
          ports:
            - containerPort: 8000
              protocol: TCP
          livenessProbe:
            httpGet:
              scheme: HTTP
              path: /
              port: 8000
            initialDelaySeconds: 30
            timeoutSeconds: 30
          volumeMounts:
          - mountPath: /tmp
            name: tmp-volume
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            runAsUser: 1001
            runAsGroup: 2001
      serviceAccountName: kubernetes-dashboard
      nodeSelector:
        "kubernetes.io/os": linux
      # Comment the following tolerations if Dashboard must not be deployed on master
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule
      volumes:
        - name: tmp-volume
          emptyDir: {}

View Code

root@easzlab-deploy:~/dashboard# cat admin-secret.yaml #创建admin 管理用户

apiVersion: v1
kind: Secret
type: kubernetes.io/service-account-token
metadata:
  name: dashboard-admin-user
  namespace: kubernetes-dashboard 
  annotations:
    kubernetes.io/service-account.name: "admin-user"

root@easzlab-deploy:~/dashboard# cat admin-user.yaml #允许admin用户访问k8s集群，具备超级管理员权限

apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kubernetes-dashboard

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: admin-user
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: admin-user
  namespace: kubernetes-dashboard

安装dashboard

root@easzlab-deploy:~/dashboard# ls
admin-secret.yaml  admin-user.yaml  dashboard-v2.6.0.yaml
root@easzlab-deploy:~/dashboard# kubectl apply -f dashboard-v2.6.0.yaml -f admin-user.yaml -f admin-secret.yaml 
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created
serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created
secret/dashboard-admin-user created
root@easzlab-deploy:~/dashboard# 
root@easzlab-deploy:~/dashboard# kubectl get secret -A
NAMESPACE              NAME                              TYPE                                  DATA   AGE
kube-system            calico-etcd-secrets               Opaque                                3      17h
kubernetes-dashboard   dashboard-admin-user              kubernetes.io/service-account-token   3      15s
kubernetes-dashboard   kubernetes-dashboard-certs        Opaque                                0      16s
kubernetes-dashboard   kubernetes-dashboard-csrf         Opaque                                1      15s
kubernetes-dashboard   kubernetes-dashboard-key-holder   Opaque                                0      15s
root@easzlab-deploy:~/dashboard#  
root@easzlab-deploy:~/dashboard# kubectl describe secrets -n kubernetes-dashboard dashboard-admin  #查admin用户token
Name:         dashboard-admin-user
Namespace:    kubernetes-dashboard
Labels:       <none>
Annotations:  kubernetes.io/service-account.name: admin-user
              kubernetes.io/service-account.uid: 68844120-9cfb-4e49-a070-875c67d14bb7

Type:  kubernetes.io/service-account-token

Data
====
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6InB2MkRvUy1fdm5rZHpsM25iV2N3cWN4b01pXzZJMjhQZ3Y2YWQ4aXVLWGsifQ.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.X3BxmfZfLRbA4JPdnu-FE_2pn59bXFD9TDr_YLpIauN5cdT9htNa-tujTSKMukwx538f4CGM_kMLGF1HOcSF6R6gDub76hf_jES3WHeG3XmlOCXjlI77orLt5LbaAf6m_Y14JcAipB30mZHXtPArcBGZzuH3cZ-Qa9fQ3iFO2Cj38w6FQzShx5tkiWpuWR_0UswSjGDo2Q664fWvzPhSKyhOx7BBGACWlUYBUuVwZVZOyHrMFk8XkSBjE8GdMlajgAhH1Ri6M0A51_ErvugXInkNWvCTZOqzHGEG059qY_Oz4t0aZrWfxS1XZi4PKiq1nDaQAbNLfyOKSb5mbmS1Lg
ca.crt:     1302 bytes
namespace:  20 bytes
root@easzlab-deploy:~/dashboard# kubectl get pod -A -owide
NAMESPACE              NAME                                        READY   STATUS    RESTARTS   AGE     IP              NODE            NOMINATED NODE   READINESS GATES
kube-system            calico-kube-controllers-5c8bb696bb-69kws    1/1     Running   0          67m     172.16.88.159   172.16.88.159   <none>           <none>
kube-system            calico-node-cjx4k                           1/1     Running   0          67m     172.16.88.154   172.16.88.154   <none>           <none>
kube-system            calico-node-mr977                           1/1     Running   0          67m     172.16.88.158   172.16.88.158   <none>           <none>
kube-system            calico-node-q7jbn                           1/1     Running   0          67m     172.16.88.159   172.16.88.159   <none>           <none>
kube-system            calico-node-rf9fv                           1/1     Running   0          67m     172.16.88.156   172.16.88.156   <none>           <none>
kube-system            calico-node-th8dt                           1/1     Running   0          67m     172.16.88.157   172.16.88.157   <none>           <none>
kube-system            calico-node-xlhbr                           1/1     Running   0          67m     172.16.88.155   172.16.88.155   <none>           <none>
kube-system            coredns-69548bdd5f-k7qwt                    1/1     Running   0          42m     10.200.40.193   172.16.88.157   <none>           <none>
kube-system            coredns-69548bdd5f-xvkbc                    1/1     Running   0          42m     10.200.233.65   172.16.88.158   <none>           <none>
kubernetes-dashboard   dashboard-metrics-scraper-8c47d4b5d-hp47z   1/1     Running   0          2m53s   10.200.2.7      172.16.88.159   <none>           <none>
kubernetes-dashboard   kubernetes-dashboard-5676d8b865-t9j6r       1/1     Running   0          2m53s   10.200.40.197   172.16.88.157   <none>           <none>
root@easzlab-deploy:~/dashboard# kubectl get svc -A
NAMESPACE              NAME                        TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                  AGE
default                kubernetes                  ClusterIP   10.100.0.1       <none>        443/TCP                  18h
kube-system            kube-dns                    ClusterIP   10.100.0.2       <none>        53/UDP,53/TCP,9153/TCP   78m
kubernetes-dashboard   dashboard-metrics-scraper   ClusterIP   10.100.228.111   <none>        8000/TCP                 3m5s
kubernetes-dashboard   kubernetes-dashboard        NodePort    10.100.212.143   <none>        443:30000/TCP            3m6s
root@easzlab-deploy:~/dashboard#