3ware raid alert script / 3ware-alerter

3ware built great hardware raid cards (not software based raids) that is  supported by linux, centos / redhat, windows..
 When you use the raid controller you install 3DM2 CLI tool soo you can update raid, get email alerts and more.

 But the function to send out email alerts works only when pressing test button, but when its a real error it dose not work!!!
 Soo I made this small bash script for linux to send out alerts and raid messages to your email.


Here is the script: 
 

#!/bin/sh
#
# To have use of this script then. Buy a 3ware raid controller and install 3dm2 CLI utility for Linux from www.3ware.com homepage.
# Script tested under: centos 5.1 / RE5.1
#
#
# This script will check the log file from 3DM2 Raid CLI utility
# and mail the log file changes to $email
#
# Q: Why use it ? 3dm2 have built in email alerter?!
# A: Yes, But only the Test to send email alerts works as it should, but when it's a real raid problem, nothing happends.
# Soo then I created this script to make sure I get information when my 3ware raid cards needs my attention.
#
# Install instruction.
# Make a file including this script under /root name it /root/3ware-alerter
# chmod u+x /root/3ware-alerter
# crontab -e then insert this line: */5 * * * * /root/3ware-alerter >/dev/null 2>&1
# Now this script will run every 5 mins to check if something happend with your 3ware raid controller
# and will then send an email to email="xxxx@yyyy.zzz"
# Feel free to use and modify my script for your needs.
#
# Made By: Håkan Franzen email: Hakan(d0t)Franzen((a))oxelosund(d0t)se
#
#--------------------------------------------------------------------------------------------
# Settings

email="xxx@yyy.zzz" #your email address here.

hostname=`hostname` #get servername using hostname command.
#hostname="my 3ware server" #or uncomment this to set server name yourself

# Don't change anything after this line please.
#--------------------------------------------------------------------------------------------

istdm2running=`ps x | grep 3dm2 | grep -c sbin`
if [ $istdm2running -eq 0 ]
then
echo "TDM2 not running!!!!"
printf "%s\n" "ALERT: 3DM2 is not running on server: $hostname" "." | mail -s "ALERT: 3DM2 is not running on server: $hostname" $email
exit 3
fi

ls -n /var/log/tdm_aen_*.txt
if [ $? -eq 2 ]
then
filesize=0
echo 0 >/tmp/3ware-checker-tmpfile
echo "No log file = no errors"
exit 0
else
filesize=`ls -n /var/log/tdm_aen_*.txt | awk '{ print $5 }'`
fi

ls -n /tmp/3ware-checker-tmpfile
if [ $? -eq 2 ]
then
echo 0 >/tmp/3ware-checker-tmpfile
fi

lastfilesize=`cat /tmp/3ware-checker-tmpfile`
filesize=`ls -n /var/log/tdm_aen_*.txt | awk '{ print $5 }'`
if [ $filesize -eq $lastfilesize ]
then
echo "No new alerts."
exit 0

else
echo "New alerts!!! Sending mail to $email "
echo $filesize >/tmp/3ware-checker-tmpfile
getfile=`ls -n /var/log/tdm_aen_*.txt | awk '{ print $9 }'`
mail -s "ALERT: NEW RAID INFO AT: $hostname" $email < $getfile
fi

# End of script