kubecm是一个k8s集群管理工具，可以合并多个kubeconfig文件，切换集群等
安装kubecm
curl -Lo kubecm.tar.gz https://github.com/sunny0826/kubecm/releases/download/v0.15.3/kubecm_0.15.3_Linux_x86_64.tar.gz
tar -zxvf kubecm.tar.gz kubecm
cd kubecm
sudo mv kubecm /usr/local/bin/
设置自动补全
$ source <(kubecm completion bash)
$ echo "source <(kubecm completion bash)" >> ~/.bashrc
$ source ~/.bashrc
kubecm的使用
执行kubecm，如果显示下面内容说明安装成功
[root@VM-0-13-centos ~]# 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.
添加集群
这里准备了3个集群的kubeconfig文件
[root@VM-0-13-centos .kube]# ll | grep config
-rw-r--r-- 1 root root 1823 Jun 2 14:25 eks.config
-rw-r--r-- 1 root root 5545 Jun 2 15:12 test.config
-rw-r--r-- 1 root root 5541 Jun 2 14:54 tke.config
这里我们先创建一个config文件，用来生成合并后的kubeconfig
[root@VM-0-13-centos .kube]# touch config
[root@VM-0-13-centos .kube]# kubecm add -f tke.config
Add Context: tke
👻 True
「tke.config」 write successful!
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| CURRENT | NAME | CLUSTER | USER | SERVER | Namespace |
+============+=========+=======================+====================+===================================+==============+
| * | tke | cluster-k4m2g9mf44 | user-k4m2g9mf44 | https://cls-xxxxxxxx.ccs.tence | default |
| | | | | nt-cloud.com | |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
[root@VM-0-13-centos .kube]# kubecm add -f eks.config
Add Context: eks
👻 True
「eks.config」 write successful!
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| CURRENT | NAME | CLUSTER | USER | SERVER | Namespace |
+============+=========+=======================+====================+===================================+==============+
| | eks | cluster-6t8847hhfb | user-6t8847hhfb | https://xx.xx.xx.xx:443/ | default |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| * | tke | cluster-k4m2g9mf44 | user-k4m2g9mf44 | https://cls-xxxxxxxx.ccs.tence | default |
| | | | | nt-cloud.com | |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
[root@VM-0-13-centos .kube]# kubecm add -f test.config
Add Context: test
👻 True
「test.config」 write successful!
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| CURRENT | NAME | CLUSTER | USER | SERVER | Namespace |
+============+=========+=======================+====================+===================================+==============+
| | eks | cluster-6t8847hhfb | user-6t8847hhfb | https://xx.xx.xx.xx:443/ | default |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| | test | cluster-9f86dg8h88 | user-9f86dg8h88 | https://cls-xxxxxxxx.ccs.tence | default |
| | | | | nt-cloud.com | |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| * | tke | cluster-k4m2g9mf44 | user-k4m2g9mf44 | https://cls-xxxxxxxx.ccs.tence | default |
| | | | | nt-cloud.com | |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
kubecm查看集群
[root@VM-0-13-centos .kube]# kubecm ls
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| CURRENT | NAME | CLUSTER | USER | SERVER | Namespace |
+============+=========+=======================+====================+===================================+==============+
| | eks | cluster-6t8847hhfb | user-6t8847hhfb | https://xx.xx.xx.xx:443/ xxx| default |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| * | tke | cluster-k4m2g9mf44 | user-k4m2g9mf44 | https://cls-xxxxxxxx.ccs.tence | default |
| | | | | nt-cloud.com | |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
Cluster check succeeded!
Kubernetes version v1.18.4-tke.6
Kubernetes master is running at https://cls-xxxxx.ccs.tencent-cloud.com
[Summary] Namespace: 63 Node: 4 Pod: 155
kubecm删除集群
[root@VM-0-13-centos .kube]# kubecm delete test
Context Delete:「test」
「/root/.kube/config」 write successful!
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| CURRENT | NAME | CLUSTER | USER | SERVER | Namespace |
+============+=========+=======================+====================+===================================+==============+
| | eks | cluster-6t8847hhfb | user-6t8847hhfb | https://xx.xx.xx.xx:443/ | default |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| * | tke | cluster-k4m2g9mf44 | user-k4m2g9mf44 | https://cls-xxxx.ccs.tence | default |
| | | | | nt-cloud.com | |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
这里我们删除了test集群
kubecm切换集群
[root@VM-0-13-centos .kube]# kubectl get node
NAME STATUS ROLES AGE VERSION
10.0.0.10 Ready <none> 61d v1.18.4-tke.8
10.0.0.157 Ready <none> 147d v1.18.4-tke.6
10.0.0.2 Ready <none> 56d v1.18.4-tke.8
10.0.0.3 Ready <none> 189d v1.18.4-tke.8
[root@VM-0-13-centos .kube]# kubecm switch eks
「/root/.kube/config」 write successful!
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| CURRENT | NAME | CLUSTER | USER | SERVER | Namespace |
+============+=========+=======================+====================+===================================+==============+
| * | eks | cluster-6t8847hhfb | user-6t8847hhfb | https://xx.xx.xx.xx:443/ | default |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
| | tke | cluster-k4m2g9mf44 | user-k4m2g9mf44 | https://cls-xxxxxxxx.ccs.tence | default |
| | | | | nt-cloud.com | |
+------------+---------+-----------------------+--------------------+-----------------------------------+--------------+
Switched to context 「eks」
[root@VM-0-13-centos .kube]# kubectl get node
NAME STATUS ROLES AGE VERSION
eklet-subnet-ktam6hp8 Ready <none> 56d v2.4.4-dirty
一开始我们默认操作集群是tke，现在切换到eks