k8s WebUI bashborad

kubectl apply -f kubernetes-dashboard.yaml
kubectl get nodes
kubectl get pods
kubectl logs nginx-65f88748fd-76slj
kubectl get rc
kubectl run my-nginx --image=nginx --replicas=2 --port=80
#重要命令
kubectl get pods -n kube-system
kubectl get pods,svc -n kube-system

kubeadm join 172.16.3.63:6443 --token qatqob.9ciblzv3ll1vwd1t --discovery-token-ca-cert-hash sha256:ba94e8e04c8352f0a5536645df2d4fc149d60c0165672e8d68cb492f3ae3c84a

• 创建和获取token和sha256编码的hash的值
• 当创建k8s主节点初始化的时候有提示输出的，如果忘记了没有的话或者过时了可以重新创建和获取。

kubeadm token create

openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'

yaml文件修改

kubernetes-dashboard.yaml文件

• 修改镜像源为：image: lizhenliang/kubernetes-dashboard-amd64:v1.10.1

• 并拉取镜像：docker pull lizhenliang/kubernetes-dashboard-amd64:v1.10.1

# ------------------- 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
        #原镜像源文件拉取不下来，去开源镜像网站找镜像源更换即可。
        #image: k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.1
        image: lizhenliang/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

• 默认Dashboard只能集群内部访问，修改Service为NodePort类型，暴露到外部：
• 注意修改文件:后面要有空格，不然会报错。error: error parsing kubernetes-dashboard.yaml: error converting YAML to JSON: yaml: line 12: mappin。

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

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

最后附上webui：

image.png