Both bash and zsh supports scripts that completes printed command when you press <TAB> . The feature is called Programmable completion, and you can find more details about that here: zsh completion .
Fortunately, you don't need to write your own script - kubectl provides it for zsh > 5.2. Try running this command: source <(kubectl completion zsh) .
Another option is to use this tool: https://github.com/mkokho/kubemrr (disclaimer: I'm the author). The reason it exists is because standard completion script is too slow - it might take seconds before Kubernetes cluster replies will all pod names. But kubemrr keeps the names locally, so the response comes back almost immediately.

I add this function to my $HOME/.zshrc.
It will lazy load complete function of kubectl

kubectl () {
    command kubectl $*
    if [[ -z $KUBECTL_COMPLETE ]]
    then
        source <(command kubectl completion zsh)
        KUBECTL_COMPLETE=1 
    fi
}

The oneline version:

(( ${+commands[kubectl]} )) && alias kubectl='test -z $C_KUBE && C_KUBE=1 && source <(command kubectl completion zsh); command kubectl'

对于oh-my-zsh，启用kubectl自动完成的最简单方法是在~/.zshrc中添加kubectl插件：

# somewhere in your .zshrc
# kubectl: The kubectl completion script for Zsh can be generated with the command kubectl completion zsh. Sourcing the completion script in your shell enables kubectl autocompletion.
# kube-ps1: A script that lets you add the current Kubernetes context and namespace configured on kubectl to your Bash/Zsh prompt strings
plugins=(git kubectl Kube-ps1)

I want to suggest more clean setup, for all of you that are using Oh My Zsh . The current accepted answer uses the command kubectl completion zsh and sources them to the environment. Instead of doing that we would place them in the plugins folder, using the same command but modifying it to:
kubectl completion zsh > ~/.oh-my-zsh/custom/plugins/kubectl.plugin.zsh
Now we have to define the plugins we want to load on ZSH start inside of our ~/.zshrc config

...

plugins=(
  git
  ...
  kubectl
)

...

This solution has the benefit of keeping your config clean. (Yes I know it is one line, but if you have to do this for 10 plugins it adds up! :) )

尝试在.zshrc文件的开头添加一行

autoload -U +X compinit && compinit

然后在下面添加另一行

source <(kubectl completion zsh)