File check_keepalived of Package monitoring-plugins-keepalived
#!/bin/bash
#
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# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
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# * Neither the name of the Novell nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
export PATH="/usr/local/bin:/usr/bin:/bin"
REVISION=0.1.5
PROGNAME=$(basename "$0")
PROGPATH=$(dirname "$PROGNAME")
#STATEFILE='/var/run/keepalived.state'
STATEFILE='/tmp/keepalived.stats'
PIDFILE='/var/run/keepalived.pid'
STATE='UNKOWN - no data processed'
PROGPATH='/usr/lib/nagios/plugins/'
USE_SNMP=false
SNMP_VERSION='2c'
SNMP_HOSTNAME='localhost'
SNMP_COMMUNITY='public'
SNMP_WALK='/usr/bin/snmpwalk'
AWK='/usr/bin/awk'
TR='/usr/bin/tr'
KEEPALIVED_INSTANCE_STATE_OID='.1.3.6.1.4.1.9586.100.5.2.3.1.4.1'
KEEPALIVED_WANTED_STATE_OID='.1.3.6.1.4.1.9586.100.5.2.3.1.6.1'
if [ -r "$PROGPATH/utils.sh" ]; then
. "$PROGPATH/utils.sh"
fi
print_usage() {
echo "Usage: $PROGNAME [-F keepalived_statefile] [-p keepalived_pidfile] [-S|-M] [-h] [-v]"
echo " -F keepalived_statefile : URI to the status file (default: $STATEFILE)"
echo " -p keepalived_pidfile : URI to the pidfile of the keepalived process (default: $PIDFILE)"
echo " -S : expect the machine to run in SLAVE state"
echo " -M : expect the machine to run in MASTER state"
echo " -h : print this usage"
echo " -V : print version information"
echo " -s : use SNMP"
echo " -H <hostname> : SNMP host to query"
echo " -v <snmp_version> : SNMP version (currently only 2c is supported, therefor default)"
echo " -c <snmp_community> : SNMP v2 community string"
echo
echo "To successfully run this script via the 'notify'-script configuration, the following pre-requires need to be fulfilled:"
echo "* in your keepalived.conf, add 'notify /usr/bin/keepalived_notify_monitoring.sh'"
echo " in at least one vrrp_instance section (see 'keepalived_notify_monitoring.sh -h'"
echo " output for more details"
echo
echo "In case of using the SNMP option, the following pre-requires need to be fulfilled:"
echo "* a running SNMP daemon with agentx support"
echo "* keepalived needs to be started with the '-x' or '--snmp' option"
echo
echo "In any of the above options:"
echo "* keepalive should be restarted after the changes"
echo
echo "Check https://en.opensuse.org/Monitoring-plugins-keepalived for more information."
echo
}
print_help() {
print_revision $PROGNAME $REVISION
echo
print_usage
echo
support
exit $STATE_OK
}
while getopts 'F:p:SMhVv:sH:c:' OPTION ; do
case $OPTION in
v|V)
print_revision $PROGNAME $REVISION
exit $STATE_OK
;;
F)
STATEFILE="$OPTARG"
;;
M)
MASTER='true'
;;
p)
PIDFILE="$OPTARG"
;;
S)
SLAVE='true'
;;
h)
print_help
exit $STATE_OK
;;
s)
USE_SNMP=true
;;
H)
SNMP_HOSTNAME="$OPTARG"
;;
v)
SNMP_VERSION="$OPTARG"
;;
c)
SNMP_COMMUNITY="$OPTARG"
;;
*)
echo "Unkown argument: $OPTION" >&2
print_usage
exit $STATE_UNKNOWN
;;
esac
done
if [ -r "$PIDFILE" ]; then
PID=$(cat "$PIDFILE")
KEEPALIVERUN=$(cat "/proc/$PID/status" | grep ^State: | awk '" " { print $2 }')
case $KEEPALIVERUN in
S|R)
KEEPALIVESTATE=$STATE_OK
;;
Z)
echo "WARNING: main keepalived process is a Zombie"
exit $STATE_WARNING
;;
*)
echo "UNKOWN: found $PIDFILE but got no state for keepalived"
exit $STATE_UNKNOWN
;;
esac
else
KEEPALIVENUM=$(ps ax | grep [k]eepalived | wc -l | $TR -d "\n")
if [ $KEEPALIVENUM -gt 0 ]; then
KEEPALIVESTATE=$STATE_OK
fi
fi
if [ $KEEPALIVESTATE -eq $STATE_OK ]; then
if [ $USE_SNMP == "true" ]; then
for command in $AWK $SNMP_WALK $TR ; do
if [ ! -x $command ]; then
echo "ERROR: $command not found or not executable"
exit $STATE_CRITICAL
fi
done
# snmpwalk -On -v2c -cpublic localhost .1.3.6.1.4.1.9586.100.5.2.3.1.4.1
SNMP_CURRENT_STATE=$($SNMP_WALK -v${SNMP_VERSION} -c${SNMP_COMMUNITY} $SNMP_HOSTNAME $KEEPALIVED_INSTANCE_STATE_OID | $AWK ' { print $4 }')
case $SNMP_CURRENT_STATE in
*1*) STATE="SLAVE" ;;
*2*) STATE="MASTER" ;;
*) STATE="UNKNOWN" ;;
esac
if [ "$MASTER" == "true" ]; then
if [ "$STATE" = "MASTER" ]; then
echo "OK: $SNMP_HOSTNAME is master"
exit $STATE_OK
else
echo "CRIT: $SNMP_HOSTNAME is not master (state is: $STATE)"
exit $STATE_CRITICAL
fi
elif [ "$SLAVE" == "true" ]; then
if [ $STATE = "SLAVE" ]; then
echo "OK: $SNMP_HOSTNAME is slave"
exit $STATE_OK
else
echo "CRIT: $SNMP_HOSTNAME is not slave (state is: $STATE)"
exit $STATE_CRITICAL
fi
else
# snmpwalk -On -v2c -cpublic localhost .1.3.6.1.4.1.9586.100.5.2.3.1.6.1
SNMP_WANTED_STATE=$($SNMP_WALK -v${SNMP_VERSION} -c${SNMP_COMMUNITY} $SNMP_HOSTNAME $KEEPALIVED_WANTED_STATE_OID | $AWK ' { print $4 }')
if [ "$SNMP_CURRENT_STATE" = "$SNMP_WANTED_STATE" ]; then
echo "OK: $SNMP_HOSTNAME is in wanted state (state is: $STATE)"
exit $STATE_OK
else
echo "CRIT: $SNMP_HOSTNAME is not in wanted state (state is: $STATE)"
exit $STATE_CRITICAL
fi
fi
else
rm -f $STATEFILE
kill -USR2 $PID
sleep 1
if [ -r "$STATEFILE" ] ; then
STATE1=$(grep "Became master:" "$STATEFILE")
STATE2=$(grep "Released master:" "$STATEFILE")
else
echo "UNKOWN: could not read $STATEFILE"
exit $STATE_UNKNOWN
fi
rm -f $STATEFILE
if [[ $STATE1 == *"Became master: 0"* ]];then
echo "$STATE1"
exit $STATE_CRITICAL
fi
if [ "$MASTER" == "true" ]; then
if [[ $STATE2 == *"Released master: 0"* ]]; then
echo "$STATE1 $STATE2"
exit $STATE_OK
fi
if [[ $STATE2 == *"Released master: 1"* ]]; then
echo "$STATE1 $STATE2"
exit $STATE_CRITICAL
fi
elif [ "$SLAVE" == "true" ]; then
if [[ $STATE2 == *"Released master: 1"* ]]; then
echo "$STATE1 $STATE2"
exit $STATE_OK
elif [[ $STATE2 == *"Released master: 0"* ]]; then
echo "$STATE1 $STATE2"
exit $STATE_CRITICAL
else
echo "UNKOWN: could not detect state from $STATEFILE : $STATE1 $STATE2"
exit $STATE_UNKNOWN
fi
else
if [[ $STATE2 == *"Released master: 0"* ]] || [[ $STATE2 == *"Released master: 1"* ]]; then
echo "$STATE1 $STATE2"
exit $STATE_OK
else
echo "UNKOWN: could not detect state from $STATEFILE : $STATE1 $STATE2"
exit $STATE_UNKNOWN
fi
fi
fi
else
echo "Keepalived is in UNKNOWN state"
exit $STATE_UNKNOWN
fi
