#!/bin/bash

CHECK_MULTI_CMD_FILE="/tmp/check_disks.cmd"

CNT=0

​

rm -rf ${CHECK_MULTI_CMD_FILE}

​

for a in `grep -E '(xfs|ext2|ext3|ext4|btrfs|reiserfs|vfat|tmpfs|vzfs)' /proc/mounts | awk '{print $1}' | grep ^/ | grep -v -E '(^/vz/template:|^/dev$)' | sort -u` ; do

 b=`readlink -e ${a}`

 if [ "`mount | grep ^${b} | wc -l`" == "1" ] ; then

  a=${b}

 fi

 if [ -d /etc/nagios/check_disks/ ] ; then

  b=`echo ${a} | sed -e s@"/"@"_"@g`

  if [ -s /etc/nagios/check_disks/${b} ] ; then

        # format is 20%:10%

        warn=`cat /etc/nagios/check_disks/${b} | awk -F: '{print $1}'`

        crit=`cat /etc/nagios/check_disks/${b} | awk -F: '{print $2}'`

    iwarn=`cat /etc/nagios/check_disks/${b} | awk -F: '{print $3}'`

    icrit=`cat /etc/nagios/check_disks/${b} | awk -F: '{print $4}'`

        if [ -z "${warn}" ] || [ -z "${crit}" ] ; then

                warn="20%"

                crit="10%"

        fi

    if [ -z "${iwarn}" ] || [ -z "${icrit}" ] ; then

        iwarn="20%"

        icrit="10%"

    fi

  else

        warn="20%"

        crit="10%"

    iwarn="20%"

    icrit="10%"

  fi

 else

    warn="20%"

    crit="10%"

    iwarn="20%"

    icrit="10%"

 fi

 echo "command[check_disk_${CNT}]=/usr/lib/nagios/plugins/check_disk -w ${warn} -c ${crit} -W ${iwarn} -K ${icrit} -p ${a}" >> ${CHECK_MULTI_CMD_FILE}

 CNT=`expr ${CNT} + 1`

done

if [ -x /usr/lib/nagios/plugins/check_multi ] ; then

        if [ -f ${CHECK_MULTI_CMD_FILE} ] ; then

                /usr/lib/nagios/plugins/check_multi -f ${CHECK_MULTI_CMD_FILE} -s dont_be_paranoid=1 --report 520

        else

                if [ -x /usr/lib/nagios/plugins/check_disk ] ; then

                        /usr/lib/nagios/plugins/check_disk -w 20% -c 10% -W 20% -K 10% -p /

                else

                        echo "Couldn't find any valid filesystem to check and i'm unable to execute check_disk plugin"

                        exit 2

                fi

        fi

else

        echo "Plugin: /usr/lib/nagios/plugins/check_multi not executable"

        exit 2

fi

​