五、Kubernetes命令行工具 (kubectl)

news/2024/5/2 12:21:24/文章来源:https://blog.csdn.net/u011837804/article/details/128376265

1、概述

kubectl 是 Kubernetes 集群的命令行工具，通过 kubectl 能够对集群本身进行管理，并能够在集群上进行容器化应用的安装部署。

2、语法

使用以下语法从终端窗口运行 kubectl 命令：

kubectl [command] [TYPE] [NAME] [flags]

其中 command、TYPE、NAME 和 flags 分别是：

command：指定要对一个或多个资源执行的操作，例如 create、get、describe、delete。
TYPE：指定资源类型。资源类型不区分大小写，可以指定单数、复数或缩写形式。
NAME：指定资源的名称。名称区分大小写。如果省略名称，则显示所有资源的详细信息。例如：kubectl get pods。
flags：指定可选的参数。例如，可以使用 -s 或 --server 参数指定 Kubernetes API 服务器的地址和端口。

3、kubectl help 获取更多信息

[root@k8s-master ~]# kubectl --help
kubectl controls the Kubernetes cluster manager.Find more information at: https://kubernetes.io/docs/reference/kubectl/Basic Commands (Beginner):create          Create a resource from a file or from stdinexpose          Take a replication controller, service, deployment or pod and expose it as a new Kubernetes servicerun             在集群上运行特定镜像set             为对象设置指定特性Basic Commands (Intermediate):explain         Get documentation for a resourceget             显示一个或多个资源edit            编辑服务器上的资源delete          Delete resources by file names, stdin, resources and names, or by resources and label selectorDeploy Commands:rollout         Manage the rollout of a resourcescale           Set a new size for a deployment, replica set, or replication controllerautoscale       Auto-scale a deployment, replica set, stateful set, or replication controllerCluster Management Commands:certificate     修改证书资源。cluster-info    Display cluster informationtop             Display resource (CPU/memory) usagecordon          标记节点为不可调度uncordon        标记节点为可调度drain           清空节点以准备维护taint           更新一个或者多个节点上的污点Troubleshooting and Debugging Commands:describe        显示特定资源或资源组的详细信息logs            打印 Pod 中容器的日志attach          挂接到一个运行中的容器exec            在某个容器中执行一个命令port-forward    将一个或多个本地端口转发到某个 Podproxy           运行一个指向 Kubernetes API 服务器的代理cp              Copy files and directories to and from containersauth            Inspect authorizationdebug           Create debugging sessions for troubleshooting workloads and nodesAdvanced Commands:diff            Diff the live version against a would-be applied versionapply           Apply a configuration to a resource by file name or stdinpatch           Update fields of a resourcereplace         Replace a resource by file name or stdinwait            Experimental: Wait for a specific condition on one or many resourceskustomize       Build a kustomization target from a directory or URL.Settings Commands:label           更新某资源上的标签annotate        更新一个资源的注解completion      Output shell completion code for the specified shell (bash, zsh, fish, or powershell)Other Commands:alpha           Commands for features in alphaapi-resources   Print the supported API resources on the serverapi-versions    Print the supported API versions on the server, in the form of "group/version"config          修改 kubeconfig 文件plugin          Provides utilities for interacting with pluginsversion         输出客户端和服务端的版本信息Usage:kubectl [flags] [options]Use "kubectl <command> --help" for more information about a given command.
Use "kubectl options" for a list of global command-line options (applies to all commands).
[root@k8s-master ~]#