Definition plugin of k8s commonly used commands kubectl

kubectlYou can customize the plug-in, allowing you to use any language, as long as you generate an executable file and kubectl-start with it,
we can customize a simple j using the shellhello kubectl

vim kubectl-hello

Enter, save and exit

#! /bin/sh
echo hello kubectl

chomd a+x kubectl-hello
mv ./kubectl-hello /usr/local/bin

Then execute it and you can see the output, a simple plugin is made

~# kubectl hello
hello kubectl

Then we can use the following command to list all the plugins

~# kubectl plugin list
The following compatible plugins are available:

/usr/local/bin/kubectl-hello

Next, let's be a little more complicated

vim kubectl-whoami

Enter the following

#!/bin/bash

# this plugin makes use of the `kubectl config` command in order to output
# information about the current user, based on the currently selected context
kubectl config view --template='{
    
    { range .contexts }}{
    
    { if eq .name "'$(kubectl config current-context)'" }}Current user: {
    
    { printf "%s\n" .context.user }}{
    
    { end }}{
    
    { end }}'

Then execute authorization and copy to the /usr/local/bin directory

chmod a+x kubectl-whoami
mv ./kubectl-whoami /usr/local/bin

Then execute

~# kubectl whoami
Current user: kubernetes-admin

The plug-in can repackage a batch of command sets, and do a complex operation without having to type one command after another. Isn’t it thoughtful?