kubectl-who_uses

#!/bin/bash
# This plugin is supposed to tell the users which secrets, serviceaccount or
# configmaps are being used by which pod/deployment

PREFIX=$1

if [[ $PREFIX == "sa" ]]; then
  PREFIX="serviceaccount"
elif [[ $PREFIX == "cm" ]]; then
  PREFIX="configmap"
fi

DEPLOYMENTS=$(kubectl get deployments ${@:3} | tail -n+2 | cut -d ' ' -f 1)
echo "DEPLOYMENTS"
echo "==="
for x in $DEPLOYMENTS; do
  kubectl describe deployment $x ${@:3} | grep $2 -B 1 | grep -q -i $PREFIX
  if [[ $? == 0 ]];
  then
    echo "$x uses $PREFIX"
  fi
done

echo $'\n'

PODS=$(kubectl get pods ${@:3} | tail -n+2 | cut -d ' ' -f 1)
echo "PODS"
echo "==="
for x in $PODS; do
  kubectl describe po $x ${@:3} | grep $2 -B 1 | grep -q -i $PREFIX
  if [[ $? == 0 ]];
  then
    echo "$x uses $PREFIX"
  fi
done