安装

安装K8S

由于我们是学习使用，暂时使用docker desktop 来安装即可。Docker Desktop后在setting中勾选kubeenetes，即可，当然也可以使用kind / minikube 安装这里就不讨论了

国内有墙，可能拉去镜像会失败，解决办法就是修改一下docker和k8s的源

配置中增加节点

  "registry-mirrors": [
    "https://dockerhub.azk8s.cn",
    "https://registry.docker-cn.com",
    "https://docker.mirrors.ustc.edu.cn",
    "http://hub-mirror.c.163.com"
  ]

安装 K8S Dashboard

Deploy Dashboard

学习k8s 概念没有一个的全局的认识，可以先按照一下kubernetes 的dashboard

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml

如果访问不到这个文件，可以采用将文件下载下来，在本地执行：

在浏览器访问
创建本地文件 vi dashboard_recommended.yaml
部署 kubectl apply -f dashboard_recommended.yaml

访问http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/ 报错

使用 kubectl -n kubernetes-dashboard get pods 查看pod状态

NAME READY STATUS RESTARTS AGE dashboard-metrics-scraper-7bcf95749-xk7rz 1/1 Running 0 45s kubernetes-dashboard-586fc678f9-d2pnq 1/1 ImagePullBackOff 0 45s

ImagePullBackOff 意思是pull image 失败了。

解决可以尝试两种方式

在本地docker 拉取一下

docker pull kubernetesui/dashboard:v2.7.0

将超时时间从30改为300

Create Dashboard Token

官方文档dashboard/docs/user/access-control/creating-sample-user.md at master · kubernetes/dashboard · GitHub

1. Create Account

vi dashboard-adminuser.yam
文件内容

apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kubernetes-dashboard
  
执行命令    
 # kubectl apply -f dashboard-adminuser.yaml

2. Create Role binding

vi dashboard-role-binding.yaml
文件内容

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
  
执行命令  
# kubectl apply -f  dashboard-role-binding.yaml

3. Generate Token

kubectl -n kubernetes-dashboard create token admin-user

将会打印

eyJhbGciOiJSUzI1NiIsImtpZCI6ImEzOThFVkYzY3NBb1phMVJSWkZfQVlJNU9wUGV6NHNGeGJWYnpTbndpVWMifQ.eyJhdWQiOlsiaHR0cHM6Ly9rdWJlcm5ldGVzLmRlZmF1bHQuc3ZjLmNsdXN0ZXIubG9jYWwiXSwiZXhwIjoxNjg5MzQzOTYzLCJpYXQiOjE2ODkzNDAzNjMsImlzcyI6Imh0dHBzOi8va3ViZXJuZXRlcy5kZWZhdWx0LnN2Yy5jbHVzdGVyLmxvY2FsIiwia3ViZXJuZXRlcy5pbyI6eyJuYW1lc3BhY2UiOiJrdWJlcm5ldGVzLWRhc2hib2FyZCIsInNlcnZpY2VhY2NvdW50Ijp7Im5hbWUiOiJhZG1pbi11c2VyIiwidWlkIjoiYWRjMThjNDAtYmExZi00NGE0LWE4MmItNzNhN2UwYzk3M2FkIn19LCJuYmYiOjE2ODkzNDAzNjMsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDprdWJlcm5ldGVzLWRhc2hib2FyZDphZG1pbi11c2VyIn0.SeX77ymzXOR33u84XkaLZOLFnvoPr0OsvSatRcR42IGxAZkM63FLuZY_Tir3Q0YXEBFl0-jQhIa-Ier7VvjEmvhsrElmU8GslT2zHgxArWhPPX41OjEmPZIC1Z6CzJCeDCW_3O75S3qV1LTiEruSXKwFBQu5WkZqgTul-8Of-d3kvazl6IhAbxHkGAAURYSXK9GAfhHy-AFbKxzrAQHX6WQyxC9uMFmEOZUTDtk_8aB7xTCnGv2J0Zf2J1nCsMwKaP41os0Ksu2yhQZAwIkCF1s_MfU49aM7VB93M6lOcNVUyHSFlmMxJl1QZVjwahtFm5x8LLmETYF1zzvzx17l3A

部署成功

获取长期的token

kubectl get secret admin-user -n kubernetes-dashboard -o jsonpath={".data.token"} | base64 -d

由于访问地址每次都要启动的kubectl proxy 所以我们通过的ingress来代理服务，这样的，我们只需要使用localhost就可以的访问了

安装Nginx Controller

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.8.1/deploy/static/provider/cloud/deploy.yaml

如果访问不了就可以下载执行

配置DashBoard的ingress

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  namespace: kubernetes-dashboard
  name: kubernetes-dashboard-ingress
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
    nginx.ingress.kubernetes.io/ssl-passthrough: "true"
    # Uncomment next if you use https://cert-manager.io/
    # cert-manager.io/cluster-issuer: "<YOUR CLUSTER ISSUER>"
spec:
  tls:
  - hosts:
    - k8s.dashboard.vic
    secretName: kubernetes-dashboard-cert
  rules:
  - http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: kubernetes-dashboard
            port:
               number: 443

通过的 https://locahost 就可以访问啦

卸载 Uninstall

如果不需要，想删除，就可以通过安装文件删除即可

kubectl delete -f dashboard_recommended.yaml

K8S 概念学习

具体概念在Kubernetes（k8s）中文文档从零开始k8s_Kubernetes中文社区中了解和学习即可

编写K8S的部署文件需要清楚的概念

Namespace

Label

Service

Deployment

K8S + K8S Dashboard 安装（Docker desktop）

安装