使用kubecm管理k8s多集群环境

最新版本地址查看https://github.com/sunny0826/kubecm/releases/1.安装（如果下载不下来，手动下载，再上传到服务器）[root@ecs--001 config]# curl -Lokubecm_0.15.3_Linux_x86_64.tar.gz https://github.com/sunny0826/kubecm/releases/download/v

安逸的程序猿

400人浏览 · 2021-07-15 17:32:53

安逸的程序猿 · 2021-07-15 17:32:53 发布

1.安装（如果下载不下来，手动下载，再上传到服务器）

[root@ecs--001 config]# curl -Lo  kubecm_0.15.3_Linux_x86_64.tar.gz https://github.com/sunny0826/kubecm/releases/download/v0.15.3/kubecm_0.15.3_Linux_x86_64.tar.gz
[root@ecs--001 config]# tar -zxvf kubecm_0.15.3_Linux_x86_64.tar.gz
[root@ecs--001 config]# mv kubecm /usr/local/bin/
[root@ecs--001 config]# kubecm

                                                   
        Manage your kubeconfig more easily.        
                                                   

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 Tips  Find more information at: https://kubecm.cloud

Usage:
  kubecm [command]

Available Commands:
  add         Add KubeConfig to $HOME/.kube/config
  alias       Generate alias for all contexts
  clear       Clear lapsed context, cluster and user
  completion  Generates bash/zsh completion scripts
  create      Create new KubeConfig(experiment)
  delete      Delete the specified context from the kubeconfig
  help        Help about any command
  list        List KubeConfig
  merge       Merge the KubeConfig files in the specified directory
  namespace   Switch or change namespace interactively
  rename      Rename the contexts of kubeconfig
  switch      Switch Kube Context interactively
  version     Print version info

Flags:
      --config string   path of kubeconfig (default "/root/.kube/config")
  -h, --help            help for kubecm

Use "kubecm [command] --help" for more information about a command.
[root@ecs--001 config]#

2.文件合并

创建一个文件夹，把所有config拷贝过来，然后合并文件

[root@ecs--001 config]# mkdir kubecm_config
[root@ecs--001 config]# cp /root/.kube/* ./kubecm_config
[root@ecs--001 config]# kubecm merge -f kubecm_config
Loading KubeConfig file:kubecm_config/config 
Add Context: config 
Loading KubeConfig file:kubecm_config/config.124 
👻 True
Rename: edge1█
Add Context: edge1 
Loading KubeConfig file:kubecm_config/config.165 
👻 True
Rename: edge4█
Add Context: edge4 
Loading KubeConfig file:kubecm_config/config.edge2 
👻 True
Rename: edge2█
Add Context: edge2 
👻 True
「kubecm_config」 write successful!
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|   CURRENT  |    NAME   |        CLUSTER        |        USER        |               SERVER              |   Namespace  |
+============+===========+=======================+====================+===================================+==============+
|            |   config  |   cluster-b796g6fbkm  |   user-b796g6fbkm  |   https://4a2636ae-5064-4699-986  |    default   |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|            |   edge1   |   cluster-b4bmcm894b  |   user-b4bmcm894b  |   https://4a2636ae-5064-4699-986  |    default   |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|            |   edge2   |   cluster-btt95tm87c  |   user-btt95tm87c  |   https://6255668b-ae75-41b5-9ae  |    default   |
|            |           |                       |                    |     4-f9d61a447457.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|            |   edge4   |   cluster-65hbbd6dbf  |   user-65hbbd6dbf  |   https://7e6b927f-a61b-4f2b-a86  |    default   |
|            |           |                       |                    |     3-906d63492126.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+

[root@ecs--001 config]#

使用命令

切换集群

[root@ecs--001 ~]# kubecm switch
😸 Select:edge1
「/root/.kube/config」 write successful!
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|   CURRENT  |    NAME   |        CLUSTER        |        USER        |               SERVER              |   Namespace  |
+============+===========+=======================+====================+===================================+==============+
|            |   config  |   cluster-b796g6fbkm  |   user-b796g6fbkm  |   https://4a2636ae-5064-4699-986  |    default   |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|      *     |   edge1   |   cluster-b4bmcm894b  |   user-b4bmcm894b  |   https://4a2636ae-5064-4699-986  |    default   |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|            |   edge2   |   cluster-btt95tm87c  |   user-btt95tm87c  |   https://6255668b-ae75-41b5-9ae  |    default   |
|            |           |                       |                    |     4-f9d61a447457.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|            |   edge4   |   cluster-65hbbd6dbf  |   user-65hbbd6dbf  |   https://7e6b927f-a61b-4f2b-a86  |    default   |
|            |           |                       |                    |     3-906d63492126.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+

Switched to context 「edge1」

查看列表

[root@ecs--001 ~]# kubecm ls
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|   CURRENT  |    NAME   |        CLUSTER        |        USER        |               SERVER              |   Namespace  |
+============+===========+=======================+====================+===================================+==============+
|            |   config  |   cluster-b796g6fbkm  |   user-b796g6fbkm  |   https://4a2636ae-5064-4699-986  |    default   |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|      *     |   edge1   |   cluster-b4bmcm894b  |   user-b4bmcm894b  |   https://4a2636ae-5064-4699-986  |    default   |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|            |   edge2   |   cluster-btt95tm87c  |   user-btt95tm87c  |   https://6255668b-ae75-41b5-9ae  |    default   |
|            |           |                       |                    |     4-f9d61a447457.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+
|            |   edge4   |   cluster-65hbbd6dbf  |   user-65hbbd6dbf  |   https://7e6b927f-a61b-4f2b-a86  |    default   |
|            |           |                       |                    |     3-906d63492126.local:8443     |              |
+------------+-----------+-----------------------+--------------------+-----------------------------------+--------------+

Cluster check succeeded!
Kubernetes version v1.14.3
Kubernetes master is running at https://4a2636ae-5064-4699-986a-9158759abcfe.local:8443
[Summary] Namespace: 9 Node: 4 Pod: 82

切换集群

[root@ecs--001 ~]# kubecm ns
🚀  Namespace: 1402902410003210241 is selected.
「/root/.kube/config」 write successful!
+------------+-----------+-----------------------+--------------------+-----------------------------------+------------------------+
|   CURRENT  |    NAME   |        CLUSTER        |        USER        |               SERVER              |        Namespace       |
+============+===========+=======================+====================+===================================+========================+
|            |   config  |   cluster-b796g6fbkm  |   user-b796g6fbkm  |   https://4a2636ae-5064-4699-986  |         default        |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |                        |
+------------+-----------+-----------------------+--------------------+-----------------------------------+------------------------+
|      *     |   edge1   |   cluster-b4bmcm894b  |   user-b4bmcm894b  |   https://4a2636ae-5064-4699-986  |   1402902410003210241  |
|            |           |                       |                    |     a-9158759abcfe.local:8443     |                        |
+------------+-----------+-----------------------+--------------------+-----------------------------------+------------------------+
|            |   edge2   |   cluster-btt95tm87c  |   user-btt95tm87c  |   https://6255668b-ae75-41b5-9ae  |         default        |
|            |           |                       |                    |     4-f9d61a447457.local:8443     |                        |
+------------+-----------+-----------------------+--------------------+-----------------------------------+------------------------+
|            |   edge4   |   cluster-65hbbd6dbf  |   user-65hbbd6dbf  |   https://7e6b927f-a61b-4f2b-a86  |         default        |
|            |           |                       |                    |     3-906d63492126.local:8443     |                        |
+------------+-----------+-----------------------+--------------------+-----------------------------------+------------------------+

[root@ecs--001 ~]#

详细操作命令请查看https://asciinema.org/a/389595

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