2011-11-13 00:46:51 +01:00
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#!/bin/bash
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#
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# Monlan can monitor some of your network resources and inform you
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# about failures...
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#
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FLT=0
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MLOG='/var/log/unitrace.log'
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LLOG='/var/log/unilast.log'
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if [ ! -f $MLOG ]; then
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touch $MLOG
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fi
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while /bin/true; do
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touch $LLOG
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NOW=`date`
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FLT=0
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DNSFLT=0
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# Reset last log entry
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echo "Last error: " > $LLOG
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# check for nslookup failures
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2011-11-13 00:46:51 +01:00
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/usr/bin/nslookup machineinyourdomain | grep 'partofip.i.e.235' 2>&1 > /dev/null
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2011-11-13 00:46:51 +01:00
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if [ $? -eq 1 ]; then
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ER="Name lookups on our domain failed on $NOW. "
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echo "$ER" >> $MLOG
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echo "$ER" >> $LLOG
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FLT=1
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DNSFLT=1
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fi
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#echo "Fault status $FLT"
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if [ "$FLT" = "0" ] ; then
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# echo "Nslookup is well" ;
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for l in machine_list ;
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# i.e. rauteg misty raulink rau3 ing1 rkw info raulink caesar.wits.ac.za shannon.ee.wits.ac.za hippo.ru.ac.za ;
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do
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# echo "Pinging $l"
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/bin/ping $l -c 5 -n | grep '100%' 2>&1 > /dev/null
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if [ $? -eq 0 ]; then
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ER="Cannot ping $l on $NOW. Possible cable fault or machine failure?"
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echo "$ER" >> $MLOG
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echo "$ER" >> $LLOG
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FLT=1
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fi
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done
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fi
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# Alerter code....
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if [ "$FLT" = "1" ]; then
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if [ "$DNSFLT" = "0" ] ; then
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echo "." >> $LLOG
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cat $LLOG | /bin/mail -s "Network failure" netadmin@your.site.name
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sleep 240
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fi
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FLT=0
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DNSFLT=0
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fi
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sleep 900 ;
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done
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