Kill stalled phantomjs processes

phantomjs_monitor.sh

#!/bin/bash
# This script is created to handle buggy prerender where phantomjs hangs

PROCESS=phantomjs
LOGSERVER=local-hightailspaces.com
LOGSERVERPORT=6379
KEY=logstash
KEYTYPE=RPUSH
TYPE=phantomjs-monitor
KILL=false

logstash () {
  if [ -z "${LOGSERVER}" ] ; then
    echo "${1}"
  else
    (printf "%s %s \"%s\"\r\n" "${KEYTYPE}" "${KEY}" "{\\\"message\\\": \\\"${1}\\\", \\\"type\\\": \\\"${TYPE}\\\"}"; sleep 1) | nc ${LOGSERVER} ${LOGSERVERPORT} > /dev/null
  fi
}

NUMBERPHANTOM=$(pgrep -c "${PROCESS}")
logstash "Number of ${PROCESS} processes ${NUMBERPHANTOM}"
while [[ $(pgrep -c "${PROCESS}") -gt 1 ]]
do
  PID=$(pgrep -o "$PROCESS")
  if [ "${KILL}" = true ] ; then
    logstash "Killing oldest ${PROCESS} ${PID}"
    pkill -o "${PROCESS}"
  else
    logstash "TEST: Killing oldest ${PROCESS} ${PID}"
  fi
done