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