Adding check_iostat 0.0.9
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3
check_iostat/Makefile
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check_iostat/Makefile
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#/usr/bin/make -f
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include ../common.mk
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352
check_iostat/check_iostat
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check_iostat/check_iostat
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#!/bin/bash
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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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# Version 0.0.8 - Jan/2019
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# Changes:
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# - Added Warn/Crit thresholds to performance output
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#
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# by Danny van Zunderd / danny_vz@live.nl
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#
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# Version 0.0.9 - Jun/2020
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# Changes:
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# - Updated to use bash 4.4 mechanisms
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#
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# by Joseph Waggy / joseph.waggy@gmail.com
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iostat=$(which iostat 2>/dev/null)
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bc=$(which bc 2>/dev/null)
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help()
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{
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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, Bytes Read/Sec, Bytes Written/Sec
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--warning/critical = Total Transfers/sec,Read IO/Sec,Write 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. This includes the time spent by the requests in queue and the time spent servicing them.
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--warning/critical = Avg I/O Wait Time (ms), Avg Read Wait Time (ms), Avg Write Wait Time (ms), Avg Service Wait Time (ms), Avg CPU Utilization
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-w,-c = pass warning and critical levels respectively. These are not 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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}
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# Ensuring we have the needed tools:
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if [[ ! -f $iostat ]] || [[ ! -f $bc ]]; then
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echo -e "ERROR: You must have iostat and bc installed in order to run this plugin\n\tuse: apt-get install systat bc\n"
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exit -1
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fi
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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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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 $OPT in
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"d")
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disk=$OPTARG
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;;
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"w")
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warning=$OPTARG
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;;
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"c")
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critical=$OPTARG
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;;
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"i")
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io=1
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;;
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"p")
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printperfdata=1
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;;
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"q")
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queue=1
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;;
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"W")
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waittime=1
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;;
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"g")
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samples=1
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;;
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"h")
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echo "help:"
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help
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exit 0
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;;
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\?)
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echo "Invalid option: -$OPTARG" >&2
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help
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exit -1
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;;
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esac
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done
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# Autofill if parameters are empty
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if [[ -z "$disk" ]]; then
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disk=sda
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fi
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#Checks that only one query type is run
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if [[ $((io+queue+waittime)) -ne "1" ]]; then
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echo "ERROR: select one and only one run mode"
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help
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exit -1
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fi
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#set warning and critical to insane value is empty, else set the individual values
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if [[ -z "$warning" ]]; then
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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" ]]; then
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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 $critical | cut -d, -f5)
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#Crude hack due to integer expression later in the script
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critical=1
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fi
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#------------Argument Set End-------------
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#------------Parameter Check-------------
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#Checks for sane Disk name:
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if [[ ! -b "/dev/$disk" ]]; then
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echo "ERROR: Device incorrectly specified"
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help
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exit -1
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fi
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#Checks for sane warning/critical levels
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if [[ $warning -ne "99999" || $critical -ne "99999" ]]; then
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if [[ "$warn_1" -gt "$crit_1" || "$warn_2" -gt "$crit_2" ]]; then
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echo "ERROR: critical levels must be higher than warning levels"
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help
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exit -1
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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 "$crit_5" ]]; then
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echo "ERROR: critical levels must be higher than warning levels"
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help
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exit -1
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fi
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fi
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fi
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#------------Parameter Check End-------------
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# iostat parameters:
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# -m: megabytes
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# -k: kilobytes
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# first run of iostat shows statistics since last reboot, second one shows current vaules of hdd
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# -d is the duration for second run, -x the rest
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TMPX=$($iostat $disk -x -k -d 10 $samples | grep $disk | tail -1)
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#------------IO Test-------------
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if [[ "$io" == "1" ]]; then
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TMPD=$($iostat $disk -k -d 10 $samples | grep $disk | tail -1)
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#Requests per second:
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tps=$(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 >= $warn_2" | bc)" == "1" || "$(echo "$written_sec >= $warn_3" | bc)" == "1" || "$(echo "$kbytes_read_sec >= $warn_4" | bc -q)" == "1" || "$(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 >= $crit_2" | bc -q)" == "1" || "$(echo "$written_sec >= $crit_3" | bc)" == "1" || "$(echo "$kbytes_read_sec >= $crit_4" | bc -q)" == "1" || "$(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;$warn_1;$crit_1; read_io_sec=$read_sec;$warn_2;$crit_2; write_io_sec=$written_sec;$warn_3;$crit_3; kbytes_read_sec=$kbytes_read_sec;$warn_4;$crit_4; kbytes_written_sec=$kbytes_written_sec;$warn_5;$crit_5;"
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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=$qsize;$warn_1;$crit_1; queue_length=$qlength;$warn_2;$crit_2;"
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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 $10}')
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avgrwait=$(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 $14}')
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# "Converting" values to float (string replace , with .)
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avgwait=${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 >= $warn_2" | bc -q)" == "1" || "$(echo "$avgwwait >= $warn_3" | bc)" == "1" || "$(echo "$avgsvctime >= $warn_4" | bc -q)" == "1" || "$(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 >= $crit_2" | bc -q)" == "1" || "$(echo "$avgwwait >= $crit_3" | bc)" == "1" || "$(echo "$avgsvctime >= $crit_4" | bc -q)" == "1" || "$(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;$warn_1;$crit_1; avg_r_waittime_ms=$avgrwait;$warn_2;$crit_2; avg_w_waittime_ms=$avgwwait;$warn_3;$crit_3; avg_service_waittime_ms=$avgsvctime;$warn_4;$crit_4; avg_cpu_utilization=$avgcpuutil;$warn_5;$crit_5;"
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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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5
check_iostat/control
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5
check_iostat/control
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Homepage: https://exchange.nagios.org/directory/Plugins/Operating-Systems/Linux/check_iostat--2D-I-2FO-statistics/details
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Uploaders: Jan Wagner <waja@cyconet.org>
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Description: plugin shows the I/O usage of the specified disk.
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Recommends: sysstat, bc
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Version: 0.0.9
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