feat: add kubernetes.md cheatsheet. #44

README.md

@@ -55,6 +55,7 @@ Quick Reference
 [Java](./docs/java.md)<!--rehype:style=background: rgb(211 55 49);&class=contributing&data-info=👆看看还缺点儿什么？-->  
 [Julia](./docs/julia.md)<!--rehype:style=background: rgb(211 55 49);&class=contributing&data-info=👆看看还缺点儿什么？-->  
 [Kotlin](./docs/kotlin.md)<!--rehype:style=background: rgb(211 55 49);&class=contributing&data-info=👆看看还缺点儿什么？-->  
+[Kubernetes](./docs/kubernetes.md)<!--rehype:style=background: rgb(211 55 49);&class=contributing&data-info=👆看看还缺点儿什么？-->  
 [LaTeX](./docs/latex.md)<!--rehype:style=background: rgb(0 128 128);&class=contributing-->  
 [Laravel 8](./docs/laravel.md)<!--rehype:style=background: rgb(249 50 44);&class=contributing tag&data-lang=PHP-->  
 [Markdown](./docs/markdown.md)<!--rehype:style=background: rgb(103 61 156);-->  

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docs/kubernetes.md

@@ -0,0 +1,342 @@
+Kubernetes 备忘清单
+===
+
+查看资源信息
+---
+
+### 节点
+
+资源名称: nodes, 缩写: no
+
+```bash
+$ kubectl get no          # 显示所有节点信息
+$ kubectl get no -o wide  # 显示所有节点的更多信息
+$ kubectl describe no     # 显示节点详情
+$ kubectl get no -o yaml  # 以yaml格式，显示节点详情
+$ kubectl get node --selector=[label_name] # 筛选指定标签的节点
+$ kubectl get nodes -o jsonpath='{.items[*].status.addresses[?(@.type=="ExternalIP")].address}'
+# 输出jsonpath表达式定义的字段信息
+$ kubectl top node [node_name] # 显示节点(CPU/内存/存储)使用情况
+```
+
+### 容器组
+
+资源名称: pods, 缩写: po
+
+```bash
+$ kubectl get po         # 显示所有容器组信息
+$ kubectl get po -o wide
+$ kubectl describe po
+$ kubectl get po --show-labels   # 查看容器组的labels
+$ kubectl get po -l app=nginx
+$ kubectl get po -o yaml
+$ kubectl get pod [pod_name] -o yaml --export
+$ kubectl get pod [pod_name] -o yaml --export > nameoffile.yaml 
+# 以yaml格式导出容器组信息到yaml文件
+$ kubectl get pods --field-selector status.phase=Running     
+# 使用字段选择器筛选出容器组信息
+```
+
+### 命名空间
+
+资源名称: namespaces, 缩写: ns
+
+```bash
+$ kubectl get ns
+$ kubectl get ns -o yaml
+$ kubectl describe ns
+```
+
+### 无状态
+
+资源名称: deployments, 缩写: deploy
+
+```bash
+$ kubectl get deploy
+$ kubectl describe deploy
+$ kubectl get deploy -o wide 
+$ kubectl get deploy -o yaml
+```
+
+### 服务
+
+资源名称: services, 缩写: svc
+
+```bash
+$ kubectl get svc
+$ kubectl describe svc
+$ kubectl get svc -o wide 
+$ kubectl get svc -o yaml
+$ kubectl get svc --show-labels
+```
+
+### 守护进程集
+
+资源名称: daemonsets, 缩写: ds
+
+```bash
+$ kubectl get ds
+$ kubectl describe ds --all-namespaces
+$ kubectl describe ds [daemonset_name] -n [namespace_name]
+$ kubectl get ds [ds_name] -n [ns_name] -o yaml
+```
+
+### 事件
+
+资源名称: events, 缩写: ev
+
+```bash
+$ kubectl get events 
+$ kubectl get events -n kube-system
+$ kubectl get events -w
+```
+
+### 日志
+
+```bash
+$ kubectl logs [pod_name]
+$ kubectl logs --since=1h [pod_name]
+$ kubectl logs --tail=20 [pod_name]
+$ kubectl logs -f -c [container_name] [pod_name]
+$ kubectl logs [pod_name] > pod.log
+```
+
+### 服务帐户
+
+资源名称: serviceaccounts, 缩写: sa
+
+```bash
+$ kubectl get sa
+$ kubectl get sa -o yaml
+$ kubectl get serviceaccounts default -o yaml >./sa.yaml
+$ kubectl replace serviceaccount default -f ./sa.yaml
+```
+
+### 副本集
+
+资源名称: replicasets, 缩写: rs
+
+```bash
+$ kubectl get rs
+$ kubectl describe rs
+$ kubectl get rs -o wide 
+$ kubectl get rs -o yaml
+```
+
+### 角色
+
+```bash
+$ kubectl get roles --all-namespaces
+$ kubectl get roles --all-namespaces -o yaml
+```
+
+### 保密字典
+
+```bash
+$ kubectl get secrets
+$ kubectl get secrets --all-namespaces 
+$ kubectl get secrets -o yaml
+```
+
+### 配置项
+
+资源名称: configmaps, 缩写: cm
+
+```bash
+$ kubectl get cm
+$ kubectl get cm --all-namespaces
+$ kubectl get cm --all-namespaces -o yaml
+```
+
+### 路由
+
+资源名称: ingresses, 缩写: ing
+
+```bash
+$ kubectl get ing
+$ kubectl get ing --all-namespaces
+```
+
+### 持久卷
+
+资源名称: persistentvolumes, 缩写: pv
+
+```bash
+$ kubectl get pv 
+$ kubectl describe pv
+```
+
+### 持久卷声明
+
+资源名称: persistentvolumeclaims, 缩写: pvc
+
+```bash
+$ kubectl get pvc
+$ kubectl describe pvc
+```
+
+### 存储类
+
+资源名称: storageclasses, 缩写: sc
+
+```bash
+$ kubectl get sc
+$ kubectl get sc -o yaml
+```
+
+### 多个资源
+
+```bash
+$ kubectl get svc, po
+$ kubectl get deploy, no
+$ kubectl get all
+$ kubectl get all --all-namespaces
+```
+
+变更资源属性
+---
+
+### 污点
+
+```bash
+$ kubectl taint [node_name] [taint_name]
+```
+
+### 标签
+
+```bash
+$ kubectl label [node_name] disktype=ssd 
+$ kubectl label [pod_name] env=prod
+```
+
+### 维护/可调度
+
+```bash
+$ kubectl cordon [node_name]   # 节点维护
+$ kubectl uncordon [node_name] # 节点可调度
+```
+
+### 清空节点
+
+```bash
+$ kubectl drain [node_name]    # 清空节点
+```
+
+### 节点/容器组
+
+```bash
+$ kubectl delete node [node_name] 
+$ kubectl delete pod [pod_name]
+$ kubectl edit node [node_name]
+$ kubectl edit pod [pod_name]
+```
+
+### 无状态/命名空间
+
+```bash
+$ kubectl edit deploy [deploy_name]
+$ kubectl delete deploy [deploy_name]
+$ kubectl expose deploy [deploy_name] --port=80 --type=NodePort
+$ kubectl scale deploy [deploy_name] --replicas=5
+$ kubectl delete ns
+$ kubectl edit ns [ns_name]
+```
+
+### 服务
+
+```bash
+$ kubectl edit svc [svc_name]
+$ kubectl delete svc [svc_name]
+```
+
+### 守护进程集
+
+```bash
+$ kubectl edit ds [ds_name] -n kube-system 
+$ kubectl delete ds [ds_name]
+```
+
+### 服务账号
+
+```bash
+$ kubectl edit sa [sa_name]
+$ kubectl delete sa [sa_name]
+```
+
+### 注释
+
+```bash
+$ kubectl annotatepo [pod_name] [annotation]
+$ kubectl annotateno [node_name]
+```
+
+添加资源
+---
+
+### 创建容器组
+
+```bash
+$ kubectl create -f [name_of_file] 
+$ kubectl apply -f [name_of_file]
+$ kubectl run [pod_name] --image=nginx --restart=Never
+$ kubectl run [pod_name] --generator=run-pod/v1 --image=nginx
+$ kubectl run [pod_name] --image=nginx --restart=Never
+```
+
+### 创建服务
+
+```bash
+$ kubectl create svc nodeport [svc_name] --tcp=8080:80
+```
+
+### 创建无状态应用
+
+```bash
+$ kubectl create -f [name_of_file] 
+$ kubectl apply -f [name_of_file]
+$ kubectl create deploy [deploy_name] --image=nginx
+```
+
+### 容器交互
+
+```bash
+$ kubectl run [pod_name] --image=busybox --rm -it --restart=Never -- sh
+```
+
+### 输出YAML文件
+
+```bash
+$ kubectl create deploy [deploy_name] --image=nginx --dry-run -o yaml > deploy.yaml
+$ kubectl get po [pod_name] -o yaml --export > pod.yaml
+```
+
+### 获取帮助
+
+```bash
+$ kubectl -h
+$ kubectl create -h
+$ kubectl run -h
+$ kubectl explain deploy.spec
+```
+
+请求
+---
+
+### API调用
+
+```bash
+$ kubectl get --raw /apis/metrics.k8s.io/
+```
+
+### 集群信息
+
+```bash
+$ kubectl config
+$ kubectl cluster-info
+$ kubectl get componentstatus
+```
+
+另见
+---
+
+- [Kubernetes 官方文档 命令行工具 (kubectl)](https://kubernetes.io/zh-cn/docs/reference/kubectl/) _(kubernetes.io)_