#!/bin/bash # Licensed to Cloudera, Inc. under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. Cloudera, Inc. licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. #Cron script designed to kill Hue instances that are utilizing too much memory. #If using CM, then configure CM to restart the Hue process when it dies and #then Hue will restart after this script kills it. Otherwise, modify this script #to start Hue again. KILL_ME=5000 #This is the number of MB at which it will kill. #Starting with 5000(5gb) VERBOSE=true #true then this writes out the proc info each time it runs, leave blank #to only write out when we kill the process LOG_FILE=/var/log/hue/`basename "$0" | awk -F\. '{print $1}'`.log ROTATE_SIZE=10 #MB before rotating, size in MB before rotating log to .1, we only keep #2 log files, so 20MB max main() { # Command to get memory usage. This will handle multiple Hue instances per server, so # this command grabs the highest memory Hue process at the time of running and # kills it. Then the next run it'll get the next process. if [[ ! ${USER} =~ .*root* ]] then echo "Script must be run as root: exiting" exit 1 fi PS_COMMAND="ps aux | grep [r]uncherrypyserver | awk '{print \$6\" \"\$2\" \"\$3\" \"\$12}'" PS_RESULTS=`eval ${PS_COMMAND}` if [[ -z ${PS_RESULTS} ]] then PS_COMMAND="ps aux | grep [r]unspawningserver | awk '{print \$6\" \"\$2\" \"\$3\" \"\$12}'" PS_RESULTS=`eval ${PS_COMMAND}` fi if [[ -z ${PS_RESULTS} ]] then echo "No Hue processes found: runcherrypyserver or runspawningserver process must be running" exit 1 fi MEM=`echo ${PS_RESULTS} | awk '{print $1}'` MEM_MB=`expr ${MEM} / 1024` PID=`echo ${PS_RESULTS} | awk '{print $2}'` CPU=`echo ${PS_RESULTS} | awk '{print $3}'` PROC=`echo ${PS_RESULTS} | awk '{print $4}'` DATE=`date '+%Y%m%d-%H%M'` if [[ -f ${LOG_FILE} ]] then LOG_SIZE=`du -sm ${LOG_FILE} | awk '{print $1}'` if [[ ${LOG_SIZE} -gt ${ROTATE_SIZE} ]] then mv ${LOG_FILE} ${LOG_FILE}.1 fi fi debug "${DATE} - PID: ${PID} - CPU: ${CPU} - MEM: ${MEM} - MEM_MB: ${MEM_MB} - PROC: ${PROC}" if [ ${MEM_MB} -gt ${KILL_ME} ] then echo "${DATE} - Killing Hue Process: Too much memory: ${MEM_MB} : PID: ${PID}" >> ${LOG_FILE} kill ${PID} sleep 30 PS_RESULTS=`eval ${PS_COMMAND}` PID2=`echo ${PS_RESULTS} | awk '{print $2}'` if [[ ${PID} == ${PID2} ]] then kill -9 ${PID} fi fi } debug() { if [[ ! -z $VERBOSE ]] then echo "$1" >> ${LOG_FILE} fi } main "$@"