k8s cheat sheet

-

Cluster version

• kubectl version

Cluster details

• kubectl cluster-info
• kubectl get nodes
• kubectl get deployments
• kubectl proxy
• kubectl get pods
• kubectl describe pods
• kubectl logs $POD_NAME

配置文件

• ~/.kube/config

查看配置

• kubectl config view

查看集群列表

• kubectl config get-clusters

查看 Context 列表

• kubectl config get-contexts

设置当前 Context

• kubectl config use-context dev

Dashboard

部署

• kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml

访问

• kubectl proxy
• http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/#/overview?namespace=default

部署应用

build image

• docker build -t dalufanjiadan/springcloud-payment8002 .
• docker push dalufanjiadan/springcloud-payment8002

创建 deployment

使用本地镜像

• kubectl create deployment springcloud-eureka –image=dalufanjiadan/springcloud-eureka –port=7001

使用 docker hub 镜像

• kubectl create deployment springcloud-eureka –image=docker.io/dalufanjiadan/springcloud-eureka

创建 service

• kubectl expose deployment/springcloud-eureka –type=LoadBalancer –name=springcloud-eureka –port=7001

缩扩容

手动

• kubectl scale deployments/springcloud-eureka –replicas=4

自动

更新、发布、回滚