1 . Login to the server as root
# vi /root/loadalert
2. And the below script
——————————————-
#!/bin/bash
#Wednesday, December 06 2006
EMAIL=”test@gmail.com”
EMAIL1=”test@yahoo.com”
SUBJECT=”$(hostname) load is”
TEMPFILE=”/tmp/$(hostname)”
echo “Load average has crossed the limits…” >> $TEMPFILE
echo “Hostname: $(hostname)” >> $TEMPFILE
echo “Local Date & Time : $(date)” >> $TEMPFILE
echo “| Uptime status: |” >> $TEMPFILE
echo “——————” >> $TEMPFILE
/usr/bin/uptime >> $TEMPFILE
echo “——————” >> $TEMPFILE
echo “| Top 20 CPU consuming processes: |” >> $TEMPFILE
ps aux | head -1 >> $TEMPFILE
ps aux –no-headers | sort -rn +2 | head -20 >> $TEMPFILE
echo “| Top 10 memory-consuming processes: |” >> $TEMPFILE
ps aux –no-headers| sort -rn +3 | head >> $TEMPFILE
echo “—————————” >> $TEMPFILE
echo “| Memory and Swap status: |” >> $TEMPFILE
/usr/bin/free -m >> $TEMPFILE
echo “——————————” >> $TEMPFILE
echo “| Disk Space information: |” >> $TEMPFILE
echo “—————————” >> $TEMPFILE
/bin/df -h >> $TEMPFILE
echo “——THE END—————-” >> $TEMPFILE
L05=”$(uptime|awk ‘{print $(NF-2)}’|cut -d. -f1)”
if test $L05 -gt 5
then
mail -s “$SUBJECT $L05″ “$EMAIL” < $TEMPFILE
mail -s “$SUBJECT $L05″ “$EMAIL1″ < $TEMPFILE
fi
rm -f $TEMPFILE
———————————–
Change permission
3 . chmod +x /root/loadalert
4. Add cron
# vi /var/spool/cron/root
* * * * * /root/loadalert >/dev/null 2>&1
5. Restart Cron
# /etc/init.d/crond restart
6. Check cron log for error mesage…
# tail -f /var/log/cron
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