dashboard部署

1.下载dashboard资源请单

wget  https://raw.githubusercontent.com/kubernetes/dashboard/v1.10.1/src/deploy/recommended/kubernetes-dashboard.yaml

vim kubernetes-dashboard.yaml

spec:

  ports:

    - port: 443

      targetPort: 8443

      nodePort: 31000  固定端口映射

  selector:

    k8s-app: kubernetes-dashboard

  type: NodePort  指定NodePort类的service，把服务放出去

  ...

spec:
containers:
- name: kubernetes-dashboard
image: mirrorgooglecontainers/kubernetes-dashboard-amd64:v1.10.1  修改镜像地址

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

删除 下面这一段secret

---

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

---

cd /etc/kubernetes/pki/

(umask 077;openssl genrsa -out dashboard.key 2048)  私钥

openssl req -new -key dashboard.key -out dashboard.csr -subj "/O=mageedu/CN=dashboard"  证书签名请求

openssl x509 -req -in dashboard.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out dashboard.crt -days 365  签署完成证书

kubectl create secret generic kubernetes-dashboard-certs -n kube-system --from-file=dashboard.crt=./dashboard.crt --from-file=dashboard.key=./dashboard.key 创建secret  类型是generic 即签名证书

kubectl get secrets -n kube-system  查询创建是否成功

 

 

2.创建dashboard

kubectl apply –f kubernetes-dashboard.yaml

查看dashboard的POD是否正常启动，如果正常说明安装成功

kubectl get pods --namespace=kube-system

 

解决签名证书过期的问题参考: https://www.jianshu.com/p/c6d560d12d50

 

登录dashboard的方式

1.通过token登录 

创建sa

kubectl create serviceaccount dashboard-admin -n kube-system

kubectl get sa -n kube-system 查询sa

 

kubectl create clusterrolebinding dashboard-admin --clusterrole=cluster-admin --serviceaccount=kube-system:dashboard-admin  给sa账号dashboard-admin添加集群角色 绑定名要与sa账号一致

结果: dashboard-admin-token-j6g69

 

kubectl describe secrets -n kube-system dashboard-admin-token-j6g69

token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.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.c2yulGwZU9AECgGBXmYACpB1Sg7IaZIjMFrOC2MYAPeAdDWPGRjhtTFL5vwheu1EUsuPTA__uxLwvQ4VDxWA64MjsZy_PT-86Oe4LuhGltZpHiqfuonqpRGqQLdlXut0AU1NULi4pZ7QJxVoS9hrN88Cwc40AxyyKjoqdudmRuQC1C6zp_fP-VPHKtVJg6JMgTaFBNoFDL40j9nNm9GDCDDVqdWapQxuaaPdz9Mm-Nm3cL8hz3oGV0FBrgoi5zvumMKZLsU70B5_zDW8ZeMRjf7Js5G4LSQ8C5bQ-bEs3ioCbV-2YtPMuFALJJHmmY_yzommDqJ3Jf3TUu3_n9R_ig

 

复制token，并粘帖到认证栏里即可

 

2.通过自建kubeconf文件登录

kubectl create serviceaccount def-ns-admin -n default  创建sa账号def-ns-admin

kubectl create rolebinding def-ns-admin --clusterrole=admin --serviceaccount=default:def-ns-admin  给sa账号绑定角色

kubectl describe secrets def-ns-admin-token-8flrw 获取token也能登录系统

token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJkZWZhdWx0Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZWNyZXQubmFtZSI6ImRlZi1ucy1hZG1pbi10b2tlbi04ZmxydyIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50Lm5hbWUiOiJkZWYtbnMtYWRtaW4iLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiI0MzdlNzcwOS1hYzdlLTRhMGEtYTU1OC0xZGNmOWVlOTg2ZjkiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6ZGVmYXVsdDpkZWYtbnMtYWRtaW4ifQ.TdEtTTFydD5smIksOQ7Vqk9yUV9Gg7t6dTN8Ei1qDi4jYT2LcUBxK1u7KeDJKTHaMxg_Jce3zK9heQT9CaIvnKW-c9B99nd31MAcfeGdQ0zB4Mi5dVMMoVHF1N1S9jqurkjpg4rMnIMA3l-GitXvatouWH1J2mMUX5xOXbQHs-zUOhN_RqvLl1KNSWzQoK8EEWqw82Xuz33JwcbCJfwB5xXWXzz_2rHpkYqVCKAkoskEA8V3BX0DrdKa7XslgeXs6W55tEbTykmsRTCrq6o750dbyolYY5NHhV-QFIr0uNdXQHygG-Mh4MHV-wCXbI--ueSnmP7y9fgeouD_2xEa3g

Mh4MHV-wCXbI--ueSnmP7y9fgeouD_2xEa3g

 

DEF_NS_ADMIN_TOKEN=$(kubectl get secret def-ns-admin-token-8flrw -o jsonpath={.data.token} | base64 -d)

 

kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/pki/ca.crt --server="https://192.168.85.110:6443" --embed-certs=true --kubeconfig=/root/def-ns-admin.conf  创建集群，设置集群

kubectl config view --kubeconfig=/root/def-ns-admin.conf  查看创建的conf生效了没有

kubectl config set-credentials def-ns-admin  --token=$DEF_NS_ADMIN_TOKEN  --kubeconfig=/root/def-ns-admin.conf  设置登录集群账号，账号名要与sa账号一致

kubectl config set-context def-ns-admin@kubernetes --cluster=kubernetes --user=def-ns-admin --kubeconfig=/root/def-ns-admin.conf  设置context  账号的切换就是context的切换

kubectl config use-context def-ns-admin@kubernetes --kubeconfig=/root/def-ns-admin.conf   切换context

kubectl config view --kubeconfig=/root/def-ns-admin.conf  这个def-ns-admin.conf可以拿去当用户认证信息使用了

 

注释:认证时的账号必须为serviceaccount:被dashborad pod拿来由kubernetes进行认证

      Token:1.创建serviceaccount，根据其管理目标，使用rolebinding或clusterrolebinding绑定至合理的role或clusterrole

               2.获取用户的认证信息，既获取 serviceaccount账号的secret的详细的信息，其中就有token

 

   Kubeconfig:1.把serviceaccount的token封装为kubeconfig

                  2. DEF_NS_ADMIN_TOKEN=$(kubectl get secret def-ns-admin-token-8flrw -o jsonpath={.data.token} | base64 -d)

                  3.生成kubeconfig文件

                     Kubectl config set-cluster

                     Kubectl config set-credentials

                     Kubectl config set-context

                     Kubectl config use-context

 

   Kubernetes集群的管理方式: 1.命令式 kubectl get create run expose delete edit

                                      2.命令式配置文件 kubectl create/delete  –f  filename

                                      3.声明式配置文件 kubectl apply –f filename