CPU Utilization Plugin for Nagios v1.0

This script references the official Nagios document https://exchange.nagios.org/and its code refinement and shift values, the original code is run under Ksh, the way to define the array is different from bash, in addition, in order to reflect the CPU's busy level, The average of the Vmstart command is captured and printed. In order to facilitate everyone to download, special will be included in my GitHub.

#!/bin/bash# cpu utilization statistics plugin for nagiosiostat= "/usr/bin/iostat "# nagios return codesstate_ok=0state_warning=1state_critical=2state_unknown=3# plugin  parameters value if not define list_warning_threshold= "70,40,30" LIST_CRITICAL_ Threshold= "90,60,40" interval_sec=1num_report=3# plugin variable descriptionprogname=$ (basename  $0) if [ ! -x  $IOSTAT  ]; then    echo  "UNKNOWN:  iostat not found or is not executable by the nagios  User. "     exit  $STATE _unknownfiprint_usage ()  {         echo  "        echo " $PROGNAME   $RELEASE  - cpu utilization check script for nagios "         echo&nbSP; ""         echo  "Usage: check_cpu_utili.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 in %) "        echo " "     exit 0}#  parse parameterswhile [ $# -gt 0 ]; do    case  "$ " 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                 ;;   &nBsp;     -n | --number)                 shift                NUM_REPORT=$1                 ;;                 *)    echo  "Unknown argument: $1"              print_usage            exit  $STATE _ unknown            ;;         esacshiftdone# List to Table for  warning threshold  (compatibility with tab_warning_threshold= (' echo  $LIST _warning_ Threshold | sed&nbsP; ' S/,/ /g ") #declare  -a TAB_WARNIG_THRESHOLDif [ " ${#TAB_WARNING_THRESHOLD [@]} " - ne  "3"  ]; then  echo  "Error : bad count parameter in"  warning threshold "  exit  $STATE _warningelseuser_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  Thresholdtab_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 _ Warningelseuser_critical_threshold= ' echo ${tab_critical_threshold[0]} ' system_critical_threshold= ' echo  ${tab_critical_thrESHOLD[1]} ' iowait_critical_threshold= ' echo ${tab_critical_threshold[2]} ' Fiif [ ${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 _warningficpu_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_system= ' echo  $CPU _report | cut -d  ";  -f 4 ' cpu_iowait= ' echo  $CPU _report | cut -d  ';  -f 5 '     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}% "# add for integer shell issuecpu_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  $CPU _idle | cut -d  "."  -f 1 ' cpu_vmstat_r= ' vmstat 1 4 | sed -n  ' 3,$ ' P  | awk   ' BEGINE{SUM=0} {SUM += $1} END {PRINT SUM/4} '   ' # returnif [  ${cpu_user_major} -ge  $USER _critical_threshold ]; then         echo  "cpu statistics ok : ${nagios_data} the averange  Value of r in vmstat :${cpu_vmstat_r} "         exit  $STATE _critical    elif [ ${cpu_system_major} -ge $ system_critical_threshold ]; then        echo  "CPU  statistics ok : ${nagios_data}  the averange value of r  in vmstat :${cpu_vmstat_r} "        exit  $STATE _ critical    elif [ ${cpu_iowait_major} -ge  $IOWAIT _critical_threshold  ]; then        echo  "cpu statistics ok  :  ${nagios_data}  the averange value of r in vmstat :${cpu_vmstat_r} "         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} "        echo " Cpu statistics ok : ${nagios_data}  the averange value of r  in vmstat :${cpu_vmstat_r} "        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} "        echo " cpu statistics ok : ${ Nagios_data}  the averange value of r in vmstat :${cpu_vmstat_r} "         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}"         echo  "Cpu statistics ok : ${nagios_ Data}  the averange value of r in vmstat :${cpu_vmstat_r} "         exit  $STATE _warningelse         #echo   "the  averange value of r in vmstat :${cpu_vmstat_r}\c "          echo  "cpu statistics ok : ${nagios_data}; The averange value of r in vmstat:${cpu_vmstat_r} "         exit  $STATE _OKFI

Put the script in the server-side/usr/local/nagios/libexec/directory as the Nagios plugin, and the effect is as follows:

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/6F/EF/wKiom1WtseqjP5JwAACkN4khlog993.jpg "title=" QQ picture 20150721085935.png "alt=" Wkiom1wtseqjp5jwaackn4khlog993.jpg "/>

This article is from the "Fuqin Wine" blog, please make sure to keep this source http://yuhongchun.blog.51cto.com/1604432/1676639

CPU Utilization Plugin for Nagios v1.0