kubectl port-forward to POD using labels, auto-reconnect to alive pods

kfwd.sh

#!/bin/bash

# Usage
# kfwd.sh [label=labelValue] [port]

echo $1:$2
labels=${1}
port=${2}
pid=""
pod=

while(true)
do
  pods=($(kubectl get pods -l ${labels} --template '{{range .items}}{{ if and (not .metadata.deletionTimestamp) (not (eq .status.phase "Pending")) }}{{.metadata.name}}{{"\n"}}{{end}}{{end}}'))
  if [[ ! -z ${pod} ]]; then
    grepresult=$(echo "${pods[@]}" | grep ${pod})
    found=$?
    if [ ${found} -eq 1 ]; then
      if [[ ! -z "${pid}" ]]; then
        echo "Killing connection: ${pid} -> ${pod}"
        (kill -s SIGINT "${pid}") # Run un subshell to avoid print. CAREFUL it also hides errors :)
        pid=""
        pod=""
      fi
    fi
  fi
  if [ "${#pods[@]}" -ne 0 ] && [ -z ${pod} ]; then
    pod=${pods[0]}
    echo "Connecting to ${pod}"
    kubectl port-forward ${pod} ${port} &
    pid="$!"
  fi
  sleep 3
done