#!/bin/ksh # ======================================================================================== # CPU Utilization Statistics plugin for Nagios # # Written by : Steve Bosek # Patched by : Bas van der Doorn,Philipp Lemke # Release : 2.3.3 # Creation date : 8 September 2007 # Revision date : 22 December 2008 # Package : BU Plugin # Description : Nagios plugin (script) to check cpu utilization statistics. # This script has been designed and written on Unix plateform (Linux, Aix, Solaris), # requiring iostat as external program. The locations of these can easily # be changed by editing the variables $IOSTAT at the top of the script. # The script is used to query 6 of the key cpu statistics (user,system,iowait,steal,nice,idle) # at the same time. # # USAGE : ./check_cpu_stats.sh [-w ] [-c ] ( [ -i ] [ -n ]) # # Exemple: ./check_cpu_stats.sh # ./check_cpu_stats.sh -w 70,40,30 -c 90,60,40 # ./check_cpu_stats.sh -w 70,40,30 -c 90,60,40 -i 3 -n 5 # # ---------------------------------------------------------------------------------------- # # TODO: - Support for MacOSX # # ======================================================================================== # # HISTORY : # Release | Date | Authors | Description # --------------+---------------+----------------------+----------------------------------- # 2.0 | 16.02.08 | Steve Bosek | Solaris support and new parameters # | | | New Parameters : - iostat seconds intervals # | | | - iostat report number # 2.1 | 08.06.08 | Steve Bosek | Bug perfdata and convert comma in point for Linux result # 2.1.1 | 05.12.08 | Steve Bosek | Fixed improperly terminated string that was left open at line 130 # 2.1.2 | 06.12.08 | Bas van der Doorn | Fixed linux steal reported as idle, comparisons # 2.2 | 06.12.08 | Bas van der Doorn | Capable systems will output nice and steal data # 2.2.1 | 06.12.08 | Steve Bosek | Add for uniform Unix output nice and steal data on all perfdata # 2.3 | 11.12.08 | Steve Bosek | Add Threshold for user and system output with format -w user,system,iowait -c user,system,iowait # Add Default parameters value for threshold if not define # Add check for ${TAB_WARNING_THRESHOLD[@]} and ${TAB_CRITICAL_THRESHOLD[@]} # Add verify for Critical CPU Threshold lower as Warning CPU threshold # 2.3.1 | 16.12.08 | Steve Bosek | Potability AIX,SOLARIS,LINUX for table initialisation (TAB_WARNING_THRESHOLD and TAB_CRITICAL_THRESHOLD) # 2.3.2 | 22.12.08 | Steve Bosek | Strict Guideline Nagios for perfdata # 2.3.3 | 08.02.08 | Philipp Lemke | Add HP-UX support (tested on HP-UX B.11.23 U ia64) - steve bosek : uniform perfdata # ----------------------------------------------------------------------------------------- # Paths to commands used in this script. These may have to be modified to match your system setup. IOSTAT=/usr/bin/iostat #Needed for HP-UX SAR=/usr/bin/sar # Nagios return codes STATE_OK=0 STATE_WARNING=1 STATE_CRITICAL=2 STATE_UNKNOWN=3 # Plugin parameters value if not define LIST_WARNING_THRESHOLD=${LIST_WARNING_THRESHOLD:="70,40,30"} LIST_CRITICAL_THRESHOLD=${LIST_CRITICAL_THRESHOLD:="90,60,40"} INTERVAL_SEC=${INTERVAL_SEC:="1"} NUM_REPORT=${NUM_REPORT:="3"} # Plugin variable description PROGNAME=$(basename $0) RELEASE="Revision 2.3.3" AUTHOR="(c) 2008 Steve Bosek (steve.bosek@gmail.com)" if [ `uname` = "HP-UX" ];then if [ ! -x $SAR ]; then echo "UNKNOWN: sar not found or is not executable by the nagios user." exit $STATE_UNKNOWN fi else if [ ! -x $IOSTAT ]; then echo "UNKNOWN: iostat not found or is not executable by the nagios user." exit $STATE_UNKNOWN fi fi # Functions plugin usage print_release() { echo "$RELEASE $AUTHOR" } print_usage() { echo "" echo "$PROGNAME $RELEASE - CPU Utilization check script for Nagios" echo "" echo "Usage: check_cpu_stats.sh -w -c (-i -n)" echo "" echo " -w Warning threshold in % for warn_user,warn_system,warn_iowait CPU (default : 70,40,30)" echo " Exit with WARNING status if cpu exceeds warn_n" echo " -c Critical threshold in % for crit_user,crit_system,crit_iowait CPU (default : 90,60,40)" echo " Exit with CRITICAL status if cpu exceeds crit_n" echo " -i Interval in seconds for iostat (default : 1)" echo " -n Number report for iostat (default : 3)" echo " -h Show this page" echo "" echo "Usage: $PROGNAME" echo "Usage: $PROGNAME --help" echo "" exit 0 } print_help() { print_usage echo "" echo "This plugin will check cpu utilization (user,system,CPU_Iowait,idle in %)" echo "" exit 0 } # Parse parameters while [ $# -gt 0 ]; do case "$1" in -h | --help) print_help exit $STATE_OK ;; -v | --version) print_release exit $STATE_OK ;; -w | --warning) shift LIST_WARNING_THRESHOLD=$1 ;; -c | --critical) shift LIST_CRITICAL_THRESHOLD=$1 ;; -i | --interval) shift INTERVAL_SEC=$1 ;; -n | --number) shift NUM_REPORT=$1 ;; *) echo "Unknown argument: $1" print_usage exit $STATE_UNKNOWN ;; esac shift done # List to Table for warning threshold (compatibility with set +A TAB_WARNING_THRESHOLD `echo $LIST_WARNING_THRESHOLD | sed 's/,/ /g'` if [ "${#TAB_WARNING_THRESHOLD[@]}" -ne "3" ]; then echo "ERROR : Bad count parameter in Warning Threshold" exit $STATE_WARNING else USER_WARNING_THRESHOLD=`echo ${TAB_WARNING_THRESHOLD[0]}` SYSTEM_WARNING_THRESHOLD=`echo ${TAB_WARNING_THRESHOLD[1]}` IOWAIT_WARNING_THRESHOLD=`echo ${TAB_WARNING_THRESHOLD[2]}` fi # List to Table for critical threshold set +A TAB_CRITICAL_THRESHOLD `echo $LIST_CRITICAL_THRESHOLD | sed 's/,/ /g'` if [ "${#TAB_CRITICAL_THRESHOLD[@]}" -ne "3" ]; then echo "ERROR : Bad count parameter in CRITICAL Threshold" exit $STATE_WARNING else USER_CRITICAL_THRESHOLD=`echo ${TAB_WARNING_THRESHOLD[0]}` SYSTEM_CRITICAL_THRESHOLD=`echo ${TAB_CRITICAL_THRESHOLD[1]}` IOWAIT_CRITICAL_THRESHOLD=`echo ${TAB_CRITICAL_THRESHOLD[2]}` fi if [ ${TAB_WARNING_THRESHOLD[0]} -ge ${TAB_CRITICAL_THRESHOLD[0]} -o ${TAB_WARNING_THRESHOLD[1]} -ge ${TAB_CRITICAL_THRESHOLD[1]} -o ${TAB_WARNING_THRESHOLD[2]} -ge ${TAB_CRITICAL_THRESHOLD[2]} ]; then echo "ERROR : Critical CPU Threshold lower as Warning CPU Threshold " exit $STATE_WARNING fi # CPU Utilization Statistics Unix Plateform ( Linux,AIX,Solaris are supported ) case `uname` in Linux ) CPU_REPORT=`iostat -c $INTERVAL_SEC $NUM_REPORT | sed -e 's/,/./g' | tr -s ' ' ';' | sed '/^$/d' | tail -1` CPU_REPORT_SECTIONS=`echo ${CPU_REPORT} | grep ';' -o | wc -l` CPU_USER=`echo $CPU_REPORT | cut -d ";" -f 2` CPU_NICE=`echo $CPU_REPORT | cut -d ";" -f 3` CPU_SYSTEM=`echo $CPU_REPORT | cut -d ";" -f 4` CPU_IOWAIT=`echo $CPU_REPORT | cut -d ";" -f 5` if [ ${CPU_REPORT_SECTIONS} -ge 6 ]; then CPU_STEAL=`echo $CPU_REPORT | cut -d ";" -f 6` CPU_IDLE=`echo $CPU_REPORT | cut -d ";" -f 7` NAGIOS_DATA="user=${CPU_USER}% system=${CPU_SYSTEM}%, iowait=${CPU_IOWAIT}%, idle=${CPU_IDLE}%, nice=${CPU_NICE}%, steal=${CPU_STEAL}% | CpuUser=${CPU_USER}%;${TAB_WARNING_THRESHOLD[0]};${TAB_CRITICAL_THRESHOLD[0]};0; CpuSystem=${CPU_SYSTEM}%;${TAB_WARNING_THRESHOLD[1]};${TAB_CRITICAL_THRESHOLD[1]};0; CpuIowait=${CPU_IOWAIT}%;${TAB_WARNING_THRESHOLD[2]};${TAB_CRITICAL_THRESHOLD[2]};0; CpuIdle=${CPU_IDLE}%;0,0;0; CpuNice=${CPU_NICE}%;0;0;0; CpuSteal=${CPU_STEAL}%;0;0;0;" else CPU_IDLE=`echo $CPU_REPORT | cut -d ";" -f 6` NAGIOS_DATA="user=${CPU_USER}% system=${CPU_SYSTEM}%, iowait=${CPU_IOWAIT}%, idle=${CPU_IDLE}%, nice=${CPU_NICE}%, steal=0.00% | CpuUser=${CPU_USER}%;${TAB_WARNING_THRESHOLD[0]};${TAB_CRITICAL_THRESHOLD[0]};0; CpuSystem=${CPU_SYSTEM}%;${TAB_WARNING_THRESHOLD[1]};${TAB_CRITICAL_THRESHOLD[1]};0; CpuIowait=${CPU_IOWAIT}%;${TAB_WARNING_THRESHOLD[2]};${TAB_CRITICAL_THRESHOLD[2]};0; CpuIdle=${CPU_IDLE}%;0;0;0; CpuNice=${CPU_NICE}%;0,0;0; CpuSteal=0.0%;0,0;0;" fi ;; AIX ) CPU_REPORT=`iostat -t $INTERVAL_SEC $NUM_REPORT | sed -e 's/,/./g'|tr -s ' ' ';' | tail -1` CPU_USER=`echo $CPU_REPORT | cut -d ";" -f 4` CPU_SYSTEM=`echo $CPU_REPORT | cut -d ";" -f 5` CPU_IOWAIT=`echo $CPU_REPORT | cut -d ";" -f 7` CPU_IDLE=`echo $CPU_REPORT | cut -d ";" -f 6` NAGIOS_DATA="user=${CPU_USER}% system=${CPU_SYSTEM}%, iowait=${CPU_IOWAIT}%, idle=${CPU_IDLE}%, nice=0.00%, steal=0.00% | CpuUser=${CPU_USER}%;${TAB_WARNING_THRESHOLD[0]};${TAB_CRITICAL_THRESHOLD[0]};0; CpuSystem=${CPU_SYSTEM}%;${TAB_WARNING_THRESHOLD[1]};${TAB_CRITICAL_THRESHOLD[1]};0; CpuIowait=${CPU_IOWAIT}%;${TAB_WARNING_THRESHOLD[2]};${TAB_CRITICAL_THRESHOLD[2]};0; CpuIdle=${CPU_IDLE}%;0;0;0; CpuNice=0.0%;0,0;0; CpuSteal=0.0%;0,0;0;" ;; SunOS ) CPU_REPORT=`iostat -c $INTERVAL_SEC $NUM_REPORT | tail -1` CPU_USER=`echo $CPU_REPORT | awk '{ print $1 }'` CPU_SYSTEM=`echo $CPU_REPORT | awk '{ print $2 }'` CPU_IOWAIT=`echo $CPU_REPORT | awk '{ print $3 }'` CPU_IDLE=`echo $CPU_REPORT | awk '{ print $4 }'` NAGIOS_DATA="user=${CPU_USER}% system=${CPU_SYSTEM}%, iowait=${CPU_IOWAIT}%, idle=${CPU_IDLE}%, nice=0.00%, steal=0.00% | CpuUser=${CPU_USER}%;${TAB_WARNING_THRESHOLD[0]};${TAB_CRITICAL_THRESHOLD[0]};0; CpuSystem=${CPU_SYSTEM}%;${TAB_WARNING_THRESHOLD[1]};${TAB_CRITICAL_THRESHOLD[1]};0; CpuIowait=${CPU_IOWAIT}%;${TAB_WARNING_THRESHOLD[2]};${TAB_CRITICAL_THRESHOLD[2]};0; CpuIdle=${CPU_IDLE}%;0;0;0; CpuNice=0.0%;0,0;0; CpuSteal=0.0%;0,0;0;" ;; HP-UX) CPU_REPORT=`$SAR $INTERVAL_SEC $NUM_REPORT | grep Average` CPU_USER=`echo $CPU_REPORT | awk '{ print $2 }'` CPU_SYSTEM=`echo $CPU_REPORT | awk '{ print $3 }'` CPU_IOWAIT=`echo $CPU_REPORT | awk '{ print $4 }'` CPU_IDLE=`echo $CPU_REPORT | awk '{ print $5 }'` NAGIOS_DATA="user=${CPU_USER}% system=${CPU_SYSTEM}% iowait=${CPU_IOWAIT}% idle=${CPU_IDLE}% nice=0.00% steal=0.00% | CpuUser=${CPU_USER}%;${TAB_WARNING_THRESHOLD[0]};${TAB_CRITICAL_THRESHOLD[0]};0; CpuSystem=${CPU_SYSTEM}%;{TAB_WARNING_THRESHOLD[1]};${TAB_CRITICAL_THRESHOLD[1]};0; CpuIowait=${CPU_IOWAIT};${TAB_WARNING_THRESHOLD[2]};${TAB_CRITICAL_THRESHOLD[2]};0; CpuIdle=${CPU_IDLE}%;0;0;0; CpuNice=0.0%;0,0;0; CpuSteal=0.0%;0,0;0;" ;; *) echo "UNKNOWN: `uname` not yet supported by this plugin. Coming soon !" exit $STATE_UNKNOWN ;; esac # Add for integer shell issue CPU_USER_MAJOR=`echo $CPU_USER| cut -d "." -f 1` CPU_SYSTEM_MAJOR=`echo $CPU_SYSTEM | cut -d "." -f 1` CPU_IOWAIT_MAJOR=`echo $CPU_IOWAIT | cut -d "." -f 1` CPU_IDLE_MAJOR=`echo $CPU_IDLE | cut -d "." -f 1` # Return if [ ${CPU_USER_MAJOR} -ge $USER_CRITICAL_THRESHOLD ]; then echo "CPU STATISTICS CRITICAL : ${NAGIOS_DATA}" exit $STATE_CRITICAL elif [ ${CPU_SYSTEM_MAJOR} -ge $SYSTEM_CRITICAL_THRESHOLD ]; then echo "CPU STATISTICS CRITICAL : ${NAGIOS_DATA}" exit $STATE_CRITICAL elif [ ${CPU_IOWAIT_MAJOR} -ge $IOWAIT_CRITICAL_THRESHOLD ]; then echo "CPU STATISTICS CRITICAL : ${NAGIOS_DATA}" exit $STATE_CRITICAL elif [ ${CPU_USER_MAJOR} -ge $USER_WARNING_THRESHOLD ] && [ ${CPU_USER_MAJOR} -lt $USER_CRITICAL_THRESHOLD ]; then echo "CPU STATISTICS WARNING : ${NAGIOS_DATA}" exit $STATE_WARNING elif [ ${CPU_SYSTEM_MAJOR} -ge $SYSTEM_WARNING_THRESHOLD ] && [ ${CPU_SYSTEM_MAJOR} -lt $SYSTEM_CRITICAL_THRESHOLD ]; then echo "CPU STATISTICS WARNING : ${NAGIOS_DATA}" exit $STATE_WARNING elif [ ${CPU_IOWAIT_MAJOR} -ge $IOWAIT_WARNING_THRESHOLD ] && [ ${CPU_IOWAIT_MAJOR} -lt $IOWAIT_CRITICAL_THRESHOLD ]; then echo "CPU STATISTICS WARNING : ${NAGIOS_DATA}" exit $STATE_WARNING else echo "CPU STATISTICS OK : ${NAGIOS_DATA}" exit $STATE_OK fi