kubernetes集群客户端命令 kubectl

Posted 2022-12-26 123坤

kubernetes集群客户端命令 kubectl

一、kubectl命令帮助

集群中的管理操作几乎都可以使用kubectl命令完成

[root@k8s-master01 ~]# kubectl -h
kubectl controls the Kubernetes cluster manager.

 Find more information at: https://kubernetes.io/docs/reference/kubectl/overview/

Basic Commands (Beginner):
  create        Create a resource from a file or from stdin.
  expose        使用 replication controller, service, deployment 或者 pod 并暴露它作为一个 新的 Kubernetes
Service
  run           在集群中运行一个指定的镜像
  set           为 objects 设置一个指定的特征

Basic Commands (Intermediate):
  explain       查看资源的文档
  get           显示一个或更多 resources
  edit          在服务器上编辑一个资源
  delete        Delete resources by filenames, stdin, resources and names, or by resources and label selector

Deploy Commands:
  rollout       Manage the rollout of a resource
  scale         Set a new size for a Deployment, ReplicaSet or Replication Controller
  autoscale     Auto-scale a Deployment, ReplicaSet, StatefulSet, or ReplicationController

Cluster Management Commands:
  certificate   修改 certificate 资源.
  cluster-info  显示集群信息
  top           显示 Resource (CPU/Memory) 使用.
  cordon        标记 node 为 unschedulable
  uncordon      标记 node 为 schedulable
  drain         Drain node in preparation for maintenance
  taint         更新一个或者多个 node 上的 taints

Troubleshooting and Debugging Commands:
  describe      显示一个指定 resource 或者 group 的 resources 详情
  logs          输出容器在 pod 中的日志
  attach        Attach 到一个运行中的 container
  exec          在一个 container 中执行一个命令
  port-forward  Forward one or more local ports to a pod
  proxy         运行一个 proxy 到 Kubernetes API server
  cp            复制 files 和 directories 到 containers 和从容器中复制 files 和 directories.
  auth          Inspect authorization
  debug         Create debugging sessions for troubleshooting workloads and nodes

Advanced Commands:
  diff          Diff live version against would-be applied version
  apply         通过文件名或标准输入流(stdin)对资源进行配置
  patch         Update field(s) of a resource
  replace       通过 filename 或者 stdin替换一个资源
  wait          Experimental: Wait for a specific condition on one or many resources.
  kustomize     Build a kustomization target from a directory or URL.

Settings Commands:
  label         更新在这个资源上的 labels
  annotate      更新一个资源的注解
  completion    Output shell completion code for the specified shell (bash or zsh)

Other Commands:
  api-resources Print the supported API resources on the server
  api-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 plugins.
  version       输出 client 和 server 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).

二、kubectl命令说明

二、kubectl命令说明

三、kubectl命令补全

临时设定，在每个master节点安装命令。

yum install -y bash-completion
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)

永久设定

[root@k8s-master02 ~]# kubectl completion bash > ~/.kube/completion.bash.inc
[root@k8s-master02 ~]# source '/root/.kube/completion.bash.inc'  
[root@k8s-master02 ~]# vim .bash_profile 
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs
source /root/.kube/completion.bash.inc
PATH=$PATH:$HOME/bin

export PATH
[root@k8s-master02 ~]# source $HOME/.bash_profile