kube-ps1

Not a perfect solution but I add a prompt signaling both my current namespace and cluster, along with some safeguards for any changes on our production environment. In practice I haven't deployed something wrongfully in production ever. I use a custom written script but I've used this one in the past - its pretty nice. https://github.com/jonmosco/kube-ps1/blob/master/kube-ps1.sh

This is the PS1 I've been using for a long time: export PS1="\n\$(kube_ps1)\n\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[0;31m\]\$(__git_ps1)\n\$\[\033[00m\] " Note it needs the git-prompt.sh script (usually comes with the bash-completion package), and the kube-ps1 script: https://github.com/jonmosco/kube-ps1 It will show you the current kubernetes profile and namespace, user@host, current directory and git branch if you're in a git repo.

Also check these two as a complement: https://github.com/ahmetb/kubectx https://github.com/jonmosco/kube-ps1