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.
To do so in all your shell sessions, add the following to your
source <(kubectl completion zsh)
If you have an alias for kubectl, kubectl autocompletion will automatically work with it.
After reloading your shell, kubectl autocompletion should be working.
If you get an error like
2: command not found: compdef, then add the following to the beginning of your
autoload -Uz compinit compinit