kubectl-knife

kubectl-knife is a tool to run commands on multiple pods concurrently using kubectl commands

Install

Krew

kubectl krew install knife

More info: https://krew.sigs.k8s.io/plugins/

Binary: MacOS (amd64/arm64), Windows, Linux

https://github.com/spideyz0r/kubectl-knife/releases

From source

git checkout https://github.com/spideyz0r/kubectl-knife
cd kubectl-knife; go build -v -o kubectl-knife

Usage

Usage: kubectl knife [-dhs] [-C value] [-c value] [-m value] [-n value] [-p value] [-S value] [parameters ...]
 -C, --command=value
                    command to run, if empty, just list pods
 -c, --context=value
                    context regex
 -d, --debug        debug mode
 -h, --help         display this help
 -m, --max-concurrency=value
                    max concurrency, default: 10
 -n, --namespace=value
                    namespace regex
 -p, --pod=value    pod regex
 -S, --shell=value  default: sh
 -s, --skip-filter  skip filtering, does not use regex

Install it as a kubectl knife plugin:

1 Download or compile the binary

2 Rename it to kubectl-knife

3 Make sure the binary is included in your $PATH

$ kubectl knife -h
Usage: kubectl-knife [-dhs] [-C value] [-c value] [-m value] [-n value] [-p value] [-S value] [parameters ...]
 -C, --command=value
                    command to run, if empty, just list pods
 -c, --context=value
                    context regex
 -d, --debug        debug mode
 -h, --help         display this help
 -m, --max-concurrency=value
                    max concurrency, default: 10
 -n, --namespace=value
                    namespace regex
 -p, --pod=value    pod regex
 -S, --shell=value  default: sh
 -s, --skip-filter  skip filtering, does not use regex

TODO

• Improve pod listing output, and make it more useful
• Dynamically tries /bin/sh, /bin/dash, /bin/bash, /bin/ash ===> sh -c "ls -d /tmp" || bash -c "ls -d /tmp" || ash -c "ls -d /tmp" || dash -c "ls -d /tmp"
• Configure timeout for API calls via go context