An easy way to look at multiple data items in a Kubernetes secret.

gimmesecret.sh

#!/usr/bin/env bash

function usage {
        echo "An easy way to look at multiple data items in a Kubernetes secret."
        echo "    Usage: $(basename $0) <secret> <data ...>"
        exit 1
}

if [[ $# -eq 0 ]] ; then
        usage
fi

set -eu

name=$1
shift;

cmd="kubectl get secret $name -o custom-columns="

for arg
do
        cmd+="$arg:.data.$arg,"
done

secrets=`${cmd%?}`

echo "$secrets" | awk 'FNR==2 {print}' | tr -s ' ' '\n' | xargs -I % sh -c 'echo % | base64 -d; echo'

This is a quick way to grab secrets from Kubernetes, without running kubectl get secret... and base64 decoding each manually.

Usage:

$ ./gimmesecret.sh my-app-secrets DB_USERNAME DB_PASSWORD DB_HOST DB_PORT # ... and so on
my_app
eppEna2UW9g6ZeX5
10.123.0.99
5432