nagios-plugins/check_uptime/check_uptime.sh

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#!/bin/bash
#
# Copyright 2010, Pall Sigurdsson <palli@opensource.is>
#
# This script is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# About this script
#
# Checks uptime of a specified host, using NRPE is host is remote
HOSTN="localhost" # By default check localhost
CHECK_COMMAND="uptime" # Default command to check uptime
print_help() {
echo "$0 version $VERSION"
echo "This plugin checks uptime of local or remote host"
echo ""
echo "Usage: $0 [-H <host>]"
echo ""
echo "Example: Check uptime of a remote host"
echo "# $0 -H remotehost -s Enforcing"
}
# Parse arguments
while [ $# -gt 0 ]
do
case $1
in
-H)
HOSTN=$2
shift 2
;;
*)
print_help ;
exit $UNKNOWN
;;
esac
done
# We we are not checking localhost, lets get remote uptime via NRPE
if [ "$HOSTN" != "localhost" ]; then
export PATH=$PATH:/usr/lib/nagios/plugins:/usr/lib64/nagios/plugins:/nagios/usr/lib/nagios/plugins
CHECK_COMMAND="check_nrpe -H $HOSTN -c get_uptime"
fi
# Get the uptime, raise error if we are unsuccessful
OUTPUT=`$CHECK_COMMAND`
RESULT=$?
if [ $RESULT -gt 0 ]; then
echo "Error - Could not run command $CHECK_COMMAND"
echo "Error was: $OUTPUT"
exit 3
fi
# Parse the output from uptime command
set -- $OUTPUT
if [ $4 == 'min(s),' ]; then
echo "Warning, $HOSTN uptime is $OUTPUT"
exit 1
elif [ `echo $3 | grep -c :` -gt 0 ]; then
echo "Ok, ${HOSTN} uptime is $OUTPUT"
exit 0
else
echo "Ok, ${HOSTN} uptime is $OUTPUT"
exit 0
fi