Running kubectl commands on multiple clusters

Managing multiple Kubernetes clusters can be a real headache. I know firsthand how frustrating it can be to juggle multiple contexts, keep deployments consistent, and maintain stability across different environments.

so I found this awesome repo: https://github.com/ahmetb/kubectl-foreach

Run a kubectl command in one or more contexts (clusters) in parallel (similar to GNU parallel/xargs).

Usage

kubectl foreach [OPTIONS] [PATTERN]... -- [KUBECTL_ARGS...]

and created a small helper function to use it. It's a simple way to run kubectl commands across multiple clusters in one go, making life a bit easier.

Here's the function you can add to your bashrc or zshrc:

function kfe() {
  eval "kubectl foreach -q dc1 dc2 dc3 -- $*"
}

Just use kfe followed by your kubectl command, for example:

kfe get pods

and it will execute across dc1, dc2, and dc3 without any hassle. No more repetitive tasks or constant context switching, just a smoother workflow.

I hope this helps lighten the load for anyone dealing with the complexities of Kubernetes. We're all in this together, and sharing little tools like this can make a big difference.