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Luiz Costa
333
check_iostat/check_iostat.sh
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333
check_iostat/check_iostat.sh
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#!/bin/bash
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# set -x
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#----------check_iostat.sh-----------
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#
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# Version 0.0.2 - Jan/2009
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# Changes: added device verification
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#
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# by Thiago Varela - thiago@iplenix.com
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#
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# Version 0.0.3 - Dec/2011
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# Changes:
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# - changed values from bytes to mbytes
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# - fixed bug to get traffic data without comma but point
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# - current values are displayed now, not average values (first run of iostat)
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#
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# by Philipp Niedziela - pn@pn-it.com
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#
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# Version 0.0.4 - April/2014
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# Changes:
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# - Allow Empty warn/crit levels
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# - Can check I/O, WAIT Time, or Queue
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#
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# by Warren Turner
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#
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# Version 0.0.5 - Jun/2014
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# Changes:
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# - removed -y flag from call since iostat doesn't know about it any more (June 2014)
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# - only needed executions of iostat are done now (save cpu time whenever you can)
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# - fixed the obvious problems of missing input values (probably because of the now unimplemented "-y") with -x values
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# - made perfomance data optional (I like to have choice in the matter)
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#
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# by Frederic Krueger / fkrueger-dev-checkiostat@holics.at
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#
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# Version 0.0.6 - Jul/2014
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# Changes:
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# - Cleaned up argument checking, removed excess iostat calls, steamlined if statements and renamed variables to fit current use
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# - Fixed all inputs to match current iostat output (Ubuntu 12.04)
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# - Changed to take last ten seconds as default (more useful for nagios usage). Will go to "since last reboot" (previous behaviour) on -g flag.
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# - added extra comments/whitespace etc to make add readability
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#
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# by Ben Field / ben.field@concreteplatform.com
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#
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# Version 0.0.7 - Sep/2014
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# Changes:
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# - Fixed performance data for Wait check
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#
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# by Christian Westergard / christian.westergard@gmail.com
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#
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iostat=`which iostat 2>/dev/null`
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bc=`which bc 2>/dev/null`
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function help {
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echo -e "
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Usage:
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-d =
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--Device to be checked. Example: \"-d sda\"
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Run only one of i, q, W:
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-i = IO Check Mode
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--Checks Total Transfers/sec, Read IO/Sec, Write IO/Sec,
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Bytes Read/Sec, Bytes Written/Sec
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--warning/critical = Total Transfers/sec,Read IO/Sec,Write
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IO/Sec,Bytes Read/Sec,Bytes Written/Sec
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-q = Queue Mode
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--Checks Disk Queue Lengths
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--warning/critial = Average size of requests, Queue length of requests
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-W = Wait Time Mode
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--Check the time for I/O requests issued to the device to be served.
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This includes the time spent by the requests in queue and the time
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spent servicing them.
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--warning/critical = Avg I/O Wait Time (ms), Avg Read Wait Time (ms),
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Avg Write Wait Time (ms), Avg Service Wait Time (ms), Avg CPU
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Utilization
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-w,-c = pass warning and critical levels respectively. These are not
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required, but with out them, all queries will return as OK.
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-p = Provide performance data for later graphing
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-g = Since last reboot for system (more for debugging that nagios use!)
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-h = This help
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"
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exit -1
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}
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# Ensuring we have the needed tools:
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( [ ! -f $iostat ] || [ ! -f $bc ] ) && \
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( echo "ERROR: You must have iostat and bc installed in order to run this plugin\n\tuse: apt-get install systat bc\n" && exit -1 )
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io=0
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queue=0
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waittime=0
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printperfdata=0
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STATE="OK"
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sampleTime=3
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samples=2i
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status=0
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MSG=""
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PERFDATA=""
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#------------Argument Set-------------
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while getopts "d:w:c:ipqWhg" OPT; do
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case $OPT in
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"d") disk=$OPTARG;;
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"w") warning=$OPTARG;;
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"c") critical=$OPTARG;;
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"i") io=1;;
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"p") printperfdata=1;;
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"q") queue=1;;
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"W") waittime=1;;
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"g") samples=1;;
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"h") echo "help:" && help;;
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\?) echo "Invalid option: -$OPTARG" >&2
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exit -1
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;;
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esac
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done
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# Autofill if parameters are empty
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if [ -z "$disk" ]
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then disk=sda
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fi
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#Checks that only one query type is run
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[[ `expr $io+$queue+$waittime` -ne "1" ]] && \
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echo "ERROR: select one and only one run mode" && help
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#set warning and critical to insane value is empty, else set the individual values
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if [ -z "$warning" ]
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then warning=99999
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else
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#TPS with IO, Request size with queue
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warn_1=`echo $warning | cut -d, -f1`
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#Read/s with IO,Queue Length with queue
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warn_2=`echo $warning | cut -d, -f2`
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#Write/s with IO
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warn_3=`echo $warning | cut -d, -f3`
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#KB/s read with IO
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warn_4=`echo $warning | cut -d, -f4`
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#KB/s written with IO
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warn_5=`echo $warning | cut -d, -f5`
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#Crude hack due to integer expression later in the script
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warning=1
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fi
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if [ -z "$critical" ]
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then critical=99999
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else
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#TPS with IO, Request size with queue
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crit_1=`echo $critical | cut -d, -f1`
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#Read/s with IO,Queue Length with queue
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crit_2=`echo $critical | cut -d, -f2`
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#Write/s with IO
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crit_3=`echo $critical | cut -d, -f3`
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#KB/s read with IO
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crit_4=`echo $critical | cut -d, -f4`
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#KB/s written with IO
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crit_5=`echo $critical | cut -d, -f5`
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#Crude hack due to integer expression later in the script
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critical=1
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fi
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#------------Argument Set End-------------
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#------------Parameter Check-------------
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#Checks for sane Disk name:
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if [ ! `echo $disk | grep ^\/dev\/` ]; then
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disk="/dev/$disk"
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fi
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[ ! -b "$disk" ] && echo "ERROR: Device incorrectly specified" && help
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#Checks for sane warning/critical levels
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if ( [[ $warning -ne "99999" ]] || [[ $critical -ne "99999" ]] ); then
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if ( [ "`echo "$warn_1 > $crit_1" | bc`" == "1" ] || \
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[ "`echo "$warn_2 > $crit_2" | bc`" == "1" ] ); then
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echo "ERROR: critical levels must be higher than warning levels" && help
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elif ( [[ $io -eq "1" ]] || [[ $waittime -eq "1" ]] ); then
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# if ( [[ "$warn_3" -gt "$crit_3" ]] || [[ "$warn_4" -gt "$crit_4" ]] || [[ "$warn_5" -gt "$crit_5" ]] ); then
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if ( [ "`echo "$warn_3 > $crit_3" | bc`" == "1" ] || \
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[ "`echo "$warn_4 > $crit_4" | bc`" == "1" ] || \
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[ "`echo "$warn_5 > $crit_5" | bc`" == "1" ] ); then
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echo "ERROR: critical levels must be higher than warning levels" && help
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fi
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fi
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fi
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#------------Parameter Check End-------------
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# iostat parameters:
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# -m: megabytes
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# -k: kilobytes
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# first run of iostat shows statistics since last reboot, second one shows current vaules of hdd
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# -d is the duration for second run, -x the rest
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TMPX=`$iostat $disk -x -k -d $sampleTime $samples | sed '/^$/d' | tail -1`
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#------------IO Test-------------
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if [ "$io" == "1" ]; then
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TMPD=`$iostat $disk -k -d $sampleTime $samples | sed '/^$/d' | tail -1`
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#Requests per second:
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tps=`echo "$TMPD" | awk '{print $2}'`
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read_sec=`echo "$TMPX" | awk '{print $4}'`
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written_sec=`echo "$TMPX" | awk '{print $5}'`
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#Kb per second:
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kbytes_read_sec=`echo "$TMPX" | awk '{print $6}'`
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kbytes_written_sec=`echo "$TMPX" | awk '{print $7}'`
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# "Converting" values to float (string replace , with .)
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tps=${tps/,/.}
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read_sec=${read_sec/,/.}
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written_sec=${written_sec/,/.}
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kbytes_read_sec=${kbytes_read_sec/,/.}
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kbytes_written_sec=${kbytes_written_sec/,/.}
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# Comparing the result and setting the correct level:
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if [ "$warning" -ne "99999" ]; then
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if ( [ "`echo "$tps >= $warn_1" | bc`" == "1" ] || [ "`echo "$read_sec >= $warn_2" | bc`" == "1" ] || \
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[ "`echo "$written_sec >= $warn_3" | bc`" == "1" ] || [ "`echo "$kbytes_read_sec >= $warn_4" | bc -q`" == "1" ] ||
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[ "`echo "$kbytes_written_sec >= $warn_5" | bc`" == "1" ] ); then
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STATE="WARNING"
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status=1
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fi
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fi
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if [ "$critical" -ne "99999" ]; then
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if ( [ "`echo "$tps >= $crit_1" | bc`" == "1" ] || [ "`echo "$read_sec >= $crit_2" | bc -q`" == "1" ] || \
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[ "`echo "$written_sec >= $crit_3" | bc`" == "1" ] || [ "`echo "$kbytes_read_sec >= $crit_4" | bc -q`" == "1" ] || \
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[ "`echo "$kbytes_written_sec >= $crit_5" | bc`" == "1" ] ); then
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STATE="CRITICAL"
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status=2
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fi
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fi
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# Printing the results:
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MSG="$STATE - I/O stats: Transfers/Sec=$tps Read Requests/Sec=$read_sec Write Requests/Sec=$written_sec KBytes Read/Sec=$kbytes_read_sec KBytes_Written/Sec=$kbytes_written_sec"
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PERFDATA=" | total_io_sec=$tps; read_io_sec=$read_sec; write_io_sec=$written_sec; kbytes_read_sec=$kbytes_read_sec; kbytes_written_sec=$kbytes_written_sec;"
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fi
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#------------IO Test End-------------
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#------------Queue Test-------------
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if [ "$queue" == "1" ]; then
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qsize=`echo "$TMPX" | awk '{print $8}'`
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qlength=`echo "$TMPX" | awk '{print $9}'`
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# "Converting" values to float (string replace , with .)
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qsize=${qsize/,/.}
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qlength=${qlength/,/.}
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# Comparing the result and setting the correct level:
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if [ "$warning" -ne "99999" ]; then
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if ( [ "`echo "$qsize >= $warn_1" | bc`" == "1" ] || [ "`echo "$qlength >= $warn_2" | bc`" == "1" ] ); then
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STATE="WARNING"
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status=1
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fi
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fi
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if [ "$critical" -ne "99999" ]; then
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if ( [ "`echo "$qsize >= $crit_1" | bc`" == "1" ] || [ "`echo "$qlength >= $crit_2" | bc`" == "1" ] ); then
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STATE="CRITICAL"
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status=2
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fi
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fi
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# Printing the results:
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MSG="$STATE - Disk Queue Stats: Average Request Size=$qsize Average Queue Length=$qlength"
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PERFDATA=" | qsize=$qsize; queue_length=$qlength;"
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fi
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#------------Queue Test End-------------
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#------------Wait Time Test-------------
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#Parse values. Warning - svc time will soon be deprecated and these will need to be changed. Future parser could look at first line (labels) to suggest correct column to return
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if [ "$waittime" == "1" ]; then
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avgwait=`echo "$TMPX" | awk '{print $10}'`
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if [ `echo "$TMPX" | wc -w` == "14" ]; then
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avgrwait=`echo "$TMPX" | awk '{print $11}'`
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avgwwait=`echo "$TMPX" | awk '{print $12}'`
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avgsvctime=`echo "$TMPX" | awk '{print $13}'`
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avgcpuutil=`echo "$TMPX" | awk '{print $14}'`
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else
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avgrwait="N/A"
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avgwwait="N/A"
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avgsvctime=`echo "$TMPX" | awk '{print $11}'`
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avgcpuutil=`echo "$TMPX" | awk '{print $12}'`
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fi
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# "Converting" values to float (string replace , with .)
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avgwait=${avgwait/,/.}
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avgrwait=${avgrwait/,/.}
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avgwwait=${avgwwait/,/.}
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avgsvctime=${avgsvctime/,/.}
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avgcpuutil=${avgcpuutil/,/.}
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# Comparing the result and setting the correct level:
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if [ "$warning" -ne "99999" ]; then
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if ( [ "`echo "$avgwait >= $warn_1" | bc`" == "1" ] || [ "`echo "$avgrwait >= $warn_2" | bc -q`" == "1" ] || \
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[ "`echo "$avgwwait >= $warn_3" | bc`" == "1" ] || [ "`echo "$avgsvctime >= $warn_4" | bc -q`" == "1" ] || \
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[ "`echo "$avgcpuutil >= \"$warn_5\"" | bc`" == "1" ] ); then
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STATE="WARNING"
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status=1
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fi
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fi
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if [ "$critical" -ne "99999" ]; then
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if ( [ "`echo "$avgwait >= $crit_1" | bc`" == "1" ] || [ "`echo "$avgrwait >= $crit_2" | bc -q`" == "1" ] || \
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[ "`echo "$avgwwait >= $crit_3" | bc`" == "1" ] || [ "`echo "$avgsvctime >= $crit_4" | bc -q`" == "1" ] || \
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[ "`echo "$avgcpuutil >= $crit_5" | bc`" == "1" ] ); then
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STATE="CRITICAL"
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status=2
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fi
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fi
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# Printing the results:
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MSG="$STATE - Wait Time Stats: Avg I/O Wait Time (ms)=$avgwait Avg Read Wait Time (ms)=$avgrwait Avg Write Wait Time (ms)=$avgwwait Avg Service Wait Time (ms)=$avgsvctime Avg CPU Utilization=$avgcpuutil"
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PERFDATA=" | avg_io_waittime_ms=$avgwait; avg_r_waittime_ms=$avgrwait; avg_w_waittime_ms=$avgwwait; avg_service_waittime_ms=$avgsvctime; avg_cpu_utilization=$avgcpuutil;"
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fi
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#------------Wait Time End-------------
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# now output the official result
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echo -n "$MSG"
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if [ "x$printperfdata" == "x1" ]; then
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echo -n "$PERFDATA";
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fi
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echo ""
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exit $status
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#----------/check_iostat.sh-----------
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3
check_iostat/readme.md
Normal file
3
check_iostat/readme.md
Normal file
@@ -0,0 +1,3 @@
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# check_iostat.sh
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||||
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Source: [https://raw.githubusercontent.com/fayetted/nagios-check_iostat/master/check_iostat.sh]
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