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tech:notes_supervision_consommation_cpu [2025/03/24 15:06] – créée - modification externe 127.0.0.1tech:notes_supervision_consommation_cpu [2025/03/24 21:01] (Version actuelle) – Jean-Baptiste
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 +<!DOCTYPE markdown>
 +{{tag>Brouillon CPU Supervision Nagios Script Bash}}
 +
 +# Notes supervision consommation CPU
 +
 +Voir :
 +* [[Supervision - Sonde Nagios - Mémoire Linux|Supervision - Sonde Nagios - Mémoire Linux & CPU via SNMP]]
 +
 +## A superviser
 +
 +* Nombre total de process
 +* Nombre total de threads ''ps -efL |wc -l''
 +* Loadaverage
 +* IOWAIT
 +
 +### IOWAIT
 +
 +Voir : https://kb.vander.host/operating-systems/how-to-monitor-disk-performance-iowait-on-linux/
 +
 +~~~bash
 +top
 +sar
 +iostat -d 2 %iowait
 +iostat -c 5 100
 +snmpget -Oqv -v3 localhost .1.3.6.1.4.1.2021.11.54.0
 +~~~
 +
 +~~~bash
 +./centreon_plugins.pl --plugin=os::linux::snmp::plugin --hostname=localhost --snmp-version=3 --snmp-username "nagios" --authprotocol MD5 --authpassphrase "P@ssw0rd" --mode cpu-detailed --warning-wait=15 --critical-wait=25
 +~~~
 +
 +
 +
 +## Script check_cpu_stats.sh
 +
 +Source : https://github.com/Napsty/check_cpu_stats/blob/main/check_cpu_stats.sh
 +
 +''check_cpu_stats.sh''
 +~~~bash
 +#!/bin/bash
 +# ==============================================================================
 +# CPU Utilization Statistics plugin for Nagios 
 +#
 +# Original author:  Steve Bosek
 +# Creation date:    8 September 2007
 +# Description:      Monitoring plugin (script) to check cpu utilization statistics.
 +#                   This script has been designed and written on Unix platforms
 +#                   requiring iostat as external program.
 +#                   The script is used to query 6 of the key cpu statistics
 +#                   (user,system,iowait,steal,nice,idle) at the same time.
 +# History/Changes:  HISTORY moved out of plugin into Git repository / README.md
 +# License:          GNU General Public License v3.0 (GPL3), see LICENSE in Git repository
 +#
 +# Copyright 2007-2009,2011 Steve Bosek
 +# Copyright 2008 Bas van der Doorn
 +# Copyright 2008 Philipp Lemke
 +# Copyright 2016 Philipp Dallig
 +# Copyright 2022-2023 Claudio Kuenzler
 +#
 +# Usage:   ./check_cpu_stats.sh [-w <user,system,iowait>] [-c <user,system,iowait>] ( [-i <report interval>] [-n <report number> ] [-b <N,processname>])
 +#
 +# Example: ./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 -b '1,apache2' -b '1,running process'
 +# ========================================================================================
 +# -----------------------------------------------------------------------------------------
 +# Plugin description
 +PROGNAME=$(basename $0)
 +RELEASE="Revision 3.1.5"
 +
 +# Paths to commands used in this script.  These may have to be modified to match your system setup.
 +export PATH=$PATH:/usr/local/bin:/usr/bin:/bin # Set path
 +IOSTAT="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 default parameters value if not defined
 +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"}
 +# -----------------------------------------------------------------------------------------
 +# Check required commands
 +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
 +  for cmd in iostat; do
 +  if ! `command -v ${cmd} >/dev/null 2>&1`; then
 +    echo "UNKNOWN: ${cmd} does not exist, please check if command exists and PATH is correct"
 +    exit ${STATE_UNKNOWN}
 +  fi
 +done
 +fi
 +# -----------------------------------------------------------------------------------------
 +# Functions plugin usage
 +print_release() {
 +  echo "$RELEASE"
 +  exit ${STATE_UNKNOWN}
 +}
 +
 +print_usage() {
 +  echo ""
 +  echo "$PROGNAME $RELEASE - Monitoring plugin to check CPU Utilization"
 +  echo ""
 +  echo "Usage: check_cpu_stats.sh [-w] [-c] [-i] [-n] [-b]+"
 +  echo ""
 +  echo "  -w  Warning threshold in % for warn_user,warn_system,warn_iowait CPU (default : 70,40,30)"
 +  echo "  -c  Critical threshold in % for crit_user,crit_system,crit_iowait CPU (default : 90,60,40)"
 +  echo "  -i  Interval in seconds for iostat (default : 1)"
 +  echo "  -n  Number of reports for iostat (default : 3)"
 +  echo "  -b  The plugin will exit OK when condition matches (number of CPUs and process running), expects an input of N,process (e.g. 4,apache2). Can be used multiple times: -b 1,puppet -b 4,apache2 -b 4,containerd. Works only under Linux."
 +  echo "  -v  Show version"
 +  echo "  -h  Show this page"
 +  echo ""
 +  echo "Usage: $PROGNAME"
 +  echo "Usage: $PROGNAME --help"
 +  echo ""
 +  exit 0
 +}
 +
 +print_help() {
 +  print_usage
 +    echo ""
 +    echo "This plugin will check cpu utilization (user,system,iowait,idle in %)"
 +    echo ""
 +  exit 0
 +}
 +# -----------------------------------------------------------------------------------------
 +# Parse parameters
 +if [ "${1}" = "--help" ]; then print_help; exit $STATE_UNKNOWN; fi
 +
 +while getopts "c:w:i:n:b:hv" Input
 +do
 +  case ${Input} in
 +  w)      LIST_WARNING_THRESHOLD=${OPTARG};;
 +  c)      LIST_CRITICAL_THRESHOLD=${OPTARG};;
 +  i)      INTERVAL_SEC=${OPTARG};;
 +  n)      NUM_REPORT=${OPTARG};;
 +  b)      BAIL+=("${OPTARG}");;
 +  h)      print_help;;
 +  v)      print_release;;
 +  *)      print_help;;
 +  esac
 +done
 +# -----------------------------------------------------------------------------------------
 +# List to Table for warning threshold
 +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
 +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_CRITICAL_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
 +
 +      # Bail out possible under certain situations
 +      if [[ ${#BAIL[*]} -gt 0 ]]; then
 +        BC_CPU=$(nproc)
 +        o=0
 + while [ ${o} -lt ${#BAIL[*]} ]; do
 +          BAIL_CPU[${o}]=$(echo "${BAIL[${o}]}" | awk -F',' '{print $1}')
 +          BAIL_PROCESS[${o}]=$(echo "${BAIL[${o}]}" | awk -F',' '{print $2}')
 +          BC_PROCESS=$(ps aux | grep "${BAIL_PROCESS[${o}]}" | egrep -v "(grep|check_cpu_stats)" | awk '{print $2}')
 +          if [[ ${BAIL_CPU[${o}]} -eq ${BC_CPU} && ${BC_PROCESS} -gt 0 ]]; then
 +            echo "CPU STATISTICS OK - bailing out because of matched bailout patterns - ${NAGIOS_DATA}"
 +            exit $STATE_OK
 +          fi
 +          let o++
 +        done
 +      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;"
 +          ;;  
 +  #  MacOS X test       
 +  # Darwin ) CPU_REPORT=`iostat -w $INTERVAL_SEC -c $NUM_REPORT | tail -1`
 +    #   CPU_USER=`echo $CPU_REPORT | awk '{ print $4 }'`
 +    #   CPU_SYSTEM=`echo $CPU_REPORT | awk '{ print $5 }'`
 +    #   CPU_IDLE=`echo $CPU_REPORT | awk '{ print $6 }'`
 +    #   NAGIOS_DATA="user=${CPU_USER}% system=${CPU_SYSTEM}% iowait=0.00% idle=${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=0.0%;0;0;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
 +
 +echo "CPU STATISTICS UNKNOWN: Should never reach this."
 +exit $STATE_UNKNOWN
 +~~~
 +
  
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