K8s:基于命令行终端UI的管理工具 K9s

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内容摘要：

K9s是基于终端的Kubernetes集群管理工具，提供快捷命令和特殊功能，可通过Chocolatey和webinstall.dev安装，支持命令行查看集群资源信息和快捷键操作。

当前摘要为AI生成

K9s 是一个基于终端的管理 Kubernetes 集群的工具，旨在简化 Kubernetes 集群管理。和 kubebox 有些类似， K9s 同样可以持续监控集群的变化，并且可以提供与集群资源交互的快捷命令。如果说管理集群受限，只有一个 终端你可以使用，那么 k9s 是一个不错的选择.

![](/home/attachment/202301/28/1251807_167486836315735.png)

K9s 有一些特殊功能，可以显示 Kubernetes 资源之间依赖关系的 xray、显示集群高级状态的 pulse，以及扫描和报告已部署资源和配置问题的popeye 。

![](/home/attachment/202301/28/1251807_167486838464876.png)

## 安装下载

### window 客户端安装

PS C:\\Program Files> choco install k9s  
    Chocolatey v1.1.0  
    Installing the following packages:  
    k9s  
    By installing, you accept licenses for the packages.  
    Progress: Downloading kubernetes-cli 1.26.0... 100%  
    Progress: Downloading k9s 0.26.7... 100%  
  
    kubernetes-cli v1.26.0 [Approved]  
    kubernetes-cli package files install completed. Performing other installation steps.  
    The package kubernetes-cli wants to run 'chocolateyInstall.ps1'.  
    Note: If you don't run this script, the installation will fail.  
    Note: To confirm automatically next time, use '-y' or consider:  
    choco feature enable -n allowGlobalConfirmation  
    Do you want to run the script?([Y]es/[A]ll - yes to all/[N]o/[P]rint): all  
  
    Extracting 64-bit C:\\ProgramData\\chocolatey\\lib\\kubernetes-cli\\tools\\kubernetes-client-windows-amd64.tar.gz to C:\\ProgramData\\chocolatey\\lib\\kubernetes-cli\\tools...  
    C:\\ProgramData\\chocolatey\\lib\\kubernetes-cli\\tools  
    Extracting 64-bit C:\\ProgramData\\chocolatey\\lib\\kubernetes-cli\\tools\\kubernetes-client-windows-amd64.tar to C:\\ProgramData\\chocolatey\\lib\\kubernetes-cli\\tools...  
    C:\\ProgramData\\chocolatey\\lib\\kubernetes-cli\\tools  
     ShimGen has successfully created a shim for kubectl-convert.exe  
     ShimGen has successfully created a shim for kubectl.exe  
     The install of kubernetes-cli was successful.  
      Software installed to 'C:\\ProgramData\\chocolatey\\lib\\kubernetes-cli\\tools'  
  
    k9s v0.26.7 [Approved]  
    k9s package files install completed. Performing other installation steps.  
    Extracting 64-bit C:\\ProgramData\\chocolatey\\lib\\k9s\\tools\\k9s_Windows_x86_64.tar.gz to C:\\ProgramData\\chocolatey\\lib\\k9s\\tools...  
    C:\\ProgramData\\chocolatey\\lib\\k9s\\tools  
    Extracting 64-bit C:\\ProgramData\\chocolatey\\lib\\k9s\\tools\\k9s_Windows_x86_64.tar to C:\\ProgramData\\chocolatey\\lib\\k9s\\tools...  
    C:\\ProgramData\\chocolatey\\lib\\k9s\\tools  
     ShimGen has successfully created a shim for k9s.exe  
     The install of k9s was successful.  
      Software installed to 'C:\\ProgramData\\chocolatey\\lib\\k9s\\tools'  
  
    Chocolatey installed 2/2 packages.  
     See the log for details (C:\\ProgramData\\chocolatey\\logs\\chocolatey.log).  
    PS C:\\Program Files>

下载之后，需要准备好 kubeconfig 文件，放到默认加载的位置

PS C:\\Users\\山河已无恙\\.kube> ls  
  
  
    目录: C:\\Users\\山河已无恙\\.kube  
  
  
    Mode                 LastWriteTime         Length Name  
    ----                 -------------         ------ ----  
    d-----         2023/1/14      7:48                cache  
    -a----         2023/1/14     10:19           5682 config  
    PS C:\\Users\\山河已无恙\\.kube> cat .\\config  
    apiVersion: v1  
    clusters:  
    - cluster:  
    certificate-authority-data:  
    .......................

通过命令行启动

PS C:\\ProgramData\\chocolatey\\lib\\k9s\\tools> .\\k9s.exe

![](/home/attachment/202301/28/1251807_167486855639465.png)

### Linux 客户端安装

下载安装包

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k9s]  
    └─$curl -sS https://webinstall.dev/k9s | bash  
  
    Thanks for using webi to install 'k9s@stable' on 'Linux/x86_64'.  
    Have a problem? Experience a bug? Please let us know:  
        https://github.com/webinstall/webi-installers/issues  
  
    Lovin' it? Say thanks with a Star on GitHub:  
        https://github.com/webinstall/webi-installers  
  
    Downloading k9s from  
    https://github.com/derailed/k9s/releases/download/v0.26.7/k9s_Linux_x86_64.tar.gz  
    failed to download from https://github.com/derailed/k9s/releases/download/v0.26.7/k9s_Linux_x86_64.tar.gz

解压直接运行

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k9s]  
    └─$tar -zxvf k9s_Linux_x86_64.tar.gz  
    LICENSE  
    README.md  
    k9s  
    ┌──[root@vms81.liruilongs.github.io]-[~/ansible/k9s]  
    └─$ls  
    k9s  k9s_Linux_x86_64.tar.gz  LICENSE  README.md  
    ┌──[root@vms81.liruilongs.github.io]-[~/ansible/k9s]  
    └─$./k9s

查看当前集群资源的统计信息。

### docker 安装

也可以通过docker 直接运行

┌──[root@vms81.liruilongs.github.io]-[~/ansible/k9s]  
    └─$docker run --rm -it -v ~/.kube/config:/root/.kube/config docker.io/derailed/k9s
 ![](/home/attachment/202301/28/1251807_167486866567301.png) 
查看资源状态信息
![](/home/attachment/202301/28/1251807_167486871817016.png)
查看资源依赖关系
![](/home/attachment/202301/28/1251807_167486874711469.png)
### 热键

| Action | Command | Comment |
| ------------ | ------------ | ------------ |
| Show active keyboard mnemonics and help | ? |     |
| Show all available resource alias | ctrl-a |     |
| To bail out of K9s | :q, ctrl-c |     |
| View a Kubernetes resource using singular/plural or short-name | :po⏎ | accepts singular, plural, short-name or alias ie pod or pods |
| View a Kubernetes resource in a given namespace | :alias namespace⏎ |     |
| Filter out a resource view given a filter | /filter⏎ | Regex2 supported ie `fred |
| Inverse regex filter | /! filter⏎ | Keep everything that doesn't match. |
| Filter resource view by labels | /-l label-selector⏎ |     |
| Fuzzy find a resource given a filter | /-f filter⏎ |     |
| Bails out of view/command/filter mode |     |     |
| Key mapping to describe, view, edit, view logs,... | d,v, e, l,... |     |
| To view and switch to another Kubernetes context | :ctx⏎ |     |
| To view and switch to another Kubernetes context | :ctx context-name⏎ |     |
| To view and switch to another Kubernetes namespace | :ns⏎ |     |
| To view all saved resources | :screendump or sd⏎ |     |
| To delete a resource (TAB and ENTER to confirm) | ctrl-d |     |
| To kill a resource (no confirmation dialog!) | ctrl-k |     |
| Launch pulses view | :pulses or pu⏎ |     |
| Launch XRay view | :xray RESOURCE [NAMESPACE]⏎ | RESOURCE can be one of po, svc, dp, rs, sts, ds, NAMESPACE is optional |
| Launch Popeye view | :popeye or pop⏎ | See popeye |

Kubernetes

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