mirror of
https://github.com/opinkerfi/nagios-plugins.git
synced 2024-11-05 10:03:45 +01:00
172 lines
3.9 KiB
Bash
Executable File
172 lines
3.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# Nagios plugin to check the state of Linux device mapper multipath devices
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#
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# (C) 2006 Riege Software International GmbH
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# Licensed under the General Public License, Version 2
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# Contact: Gunther Schlegel, schlegel@riege.com
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# Matija Nalis, mnalis+debian@carnet.hr
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#
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# v1.0 20060220 gs new script
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# v1.1 20091020 mnalis fix -n handling to work (parsing not working, ignoring last lun...)
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PROGNAME=`basename $0`
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PROGPATH=`echo $0 | sed -e 's,[\\/][^\\/][^\\/]*$,,'`
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REVISION=`echo '$Revision: 1.12 $' | sed -e 's/[^0-9.]//g'`
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if [ -f $PROGPATH/utils.sh ]; then
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. $PROGPATH/utils.sh
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else
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. /usr/lib64/nagios/plugins/utils.sh
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fi
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MULTIPATH=/sbin/multipath
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SUDO=/usr/bin/sudo
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LSMOD=/sbin/lsmod
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print_usage() {
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echo "Usage:"
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echo " $PROGNAME [-n NUMPATHS]"
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echo ""
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echo "Options:"
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echo " -n NUMPATHS If specified there must be NUMPATHS paths present for each LUN"
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}
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print_help() {
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print_revision $PROGNAME $REVISION
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echo "Check multipath status."
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echo ""
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print_usage
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echo ""
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echo "Really simple: runs $MULTIPATH and greps for \"failed\" paths."
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echo "if NUMPATHS is specified each LUN must have that number of PATHS present."
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echo ""
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echo "Requires sudo and multipath-tools"
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echo ""
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echo "Add this to your sudoers file by running visudo to add access:"
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if [ -r /proc/modules ]; then
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echo "Cmnd_Alias MULTIPATH=$MULTIPATH -ll"
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else
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echo "Cmnd_Alias MULTIPATH=$MULTIPATH -ll, $SUDO"
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fi
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echo "nagios ALL= NOPASSWD: MULTIPATH"
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echo "The user nagios may very well be nobody or someone else depending on your configuration"
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echo ""
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support
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}
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NUMPATHS=''
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# Information options
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case "$1" in
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--help)
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print_help
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exit $STATE_OK
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;;
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-h)
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print_help
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exit $STATE_OK
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;;
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--version)
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print_revision $PLUGIN $REVISION
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exit $STATE_OK
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;;
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-V)
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print_revision $PLUGIN $REVISION
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exit $STATE_OK
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;;
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-n)
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shift
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NUMPATHS="$1"
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;;
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esac
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if [ ! -x $MULTIPATH ]; then
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echo "MULTIPATH: UNKNOWN - $MULTIPATH not found"
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exit $STATE_UNKNOWN
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fi
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# if not yet root, check sudo
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if [ $(id -un) != "root" ]; then
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MULTIPATH="$SUDO $MULTIPATH"
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# on grsec kernel /proc might be protected
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if [ ! -r /proc/modules ]; then
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LSMOD="$SUDO $LSMOD"
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fi
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fi
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OUTPUT=$($MULTIPATH -ll 2>/dev/null)
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if [ $? != 0 ]; then
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# Failed. grab more info why
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if [ $(id -un) != "root" ] && [ `$SUDO -l | grep -c multipath` -eq 0 ]; then
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echo "MULTIPATH: UNKNOWN - sudo not configured"
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exit $STATE_UNKNOWN
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fi
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MODCOUNT=$($LSMOD | grep -c ^dm_multipath)
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if [ $MODCOUNT = 0 ]; then
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echo "MULTIPATH: UNKNOWN - Module dm-multipath not loaded"
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exit $STATE_UNKNOWN
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fi
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echo "MULTIPATH: $($MULTIPATH -ll 2>&1)"
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exit $STATE_UNKNOWN
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fi
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PATHCOUNT=$(echo "$OUTPUT" | wc -l)
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if [ $PATHCOUNT -eq 0 ]; then
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echo "MULTIPATH: WARNING - No paths defined"
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exit $STATEWARNING
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fi
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FAILCOUNT=$(echo "$OUTPUT" | grep -c failed)
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if [ $FAILCOUNT -gt 0 ]; then
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echo "MULTIPATH: CRITICAL - $FAILCOUNT paths failed"
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exit $STATE_CRITICAL
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fi
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if [ "$NUMPATHS" ]; then
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echo "$OUTPUT" | awk -vnumpaths=$NUMPATHS -vrc=0 -vlun= -vtargets=0 '
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/^\[/ {next} # skip flags (lenny)
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/^size=/ {next} # skip flags (squeeze)
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/^\\/ {next} # skip devinfo (lenny)
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/policy=/ {next} # skip devinfo (squeeze)
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/^ \\/ {targets++; next} # count targets (lenny)
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/[0-9]+:[0-9]+:[0-9]+:[0-9]+/ {
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if (/active undef running/) { targets++ } # count targets (squeeze)
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if (/active ready running/) { targets++ } # count targets (RHEL6)
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next
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}
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{
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# The LUN line
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# process if this is not first LUN
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if (lun && numpaths != targets) {
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printf("CRITICAL: %d of %d paths available for LUN %s\n", targets, numpaths, lun)
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rc = 1
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}
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# reset counter
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targets = 0
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lun = $0
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}
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END {
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if (lun && numpaths != targets) {
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printf("CRITICAL: %d of %d paths available for LUN %s\n", targets, numpaths, lun)
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rc = 1
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}
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exit rc
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}
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'
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if [ $? -gt 0 ]; then
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exit $STATE_CRITICAL
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fi
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fi
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echo "MULTIPATH: OK - No failed paths"
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exit $STATE_OK
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# vim: ts=4:sw=4:noet
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