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script to grep outofmemory message in logs

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# 1  
Old 12-06-2010
script to grep outofmemory message in logs
I have prepare script to grep for outofmemory messages in the logs. I need help in modifying script. I have implemented small logic. The outofmemory messages form six logs will store in variables.
Code:
 var1=`grep -i outofmemory $tomcat1logs  | sed -n '$p'| sed -n -e "s/.*\(outofmemory\).*/\1/p"`  
 var2=`grep -i outofmemory $tomcat2logs | sed -n '$p'| sed -n -e "s/.*\(outofmemory\).*/\1/p"`  
 var3=`grep -i outofmemory $tomcat3logs | sed -n '$p'| sed -n -e "s/.*\(outofmemory\).*/\1/p"`  
 var4=`grep -i outofmemory $tomcat4logs | sed -n '$p'| sed -n -e "s/.*\(outofmemory\).*/\1/p"`  
 var5=`grep -i outofmemory $tomcat5logs | sed -n '$p'| sed -n -e "s/.*\(outofmemory\).*/\1/p"`  
 var6=`grep -i outofmemory $tomcat6logs | sed -n '$p'| sed -n -e "s/.*\(outofmemory\).*/\1/p"`

My requirement is if there is an outofmmeory message in any of the varibale from above six. It should send the mail saying "there is an out outofmemory in tomcat1,tomcat2,tomcat3,tomcat4,tomcat5 or tomcat6 if it founds outofmemory invar1,var2,var3,var4,var5 or var6 respectively. Please help me to design the script for the above logic.Thanks in advance.
Last edited by jim mcnamara; 12-06-2010 at 08:26 AM.. Reason: code tags please
# 2  
Old 12-06-2010
Assuming the actual name of the log file is tomcatnlogs, where n is a number:
Code:
var=$(grep -l 'outofmemory' tomcat*logs)
if [ ! -z "$var" ] ; then
  echo "outofmemory error in file(s) $var" | mailx -s 'outofmemory error'  me@myaddress.com
fi

# 3  
Old 12-06-2010
Hello Jim,

Thanks for the response. My requirement is the script should check all variables i.e var1,var2,var3,var4,var5 and var6. If var1 contains "outofmemory" message then it should send message there is an outofmemory error on tomcat1 same for other variables like var2,var3,var4,var5,var6. If var2 contains outofmemory then it should send there is an outofmemory for tomcat2. Please guide me to implement this logic.

Also can you please explain me how can we use below command to grep for outofmemory message.Please let me know what should we keep in place of *(tomcat*logs).

var=$(grep -l 'outofmemory' tomcat*logs)
if [ ! -z "$var" ] ; then
echo "outofmemory error in file(s) $var" | mailx -s 'outofmemory error' me@myaddress.com
fi
# 4  
Old 12-06-2010
I understand what your code is trying to do.

What I am trying to do is give you the output you need, without the really complex code you wrote. So,

1. please give us some examples of the /path/to/tomcatlogs
2. please give us EXACTLY what you want in the mail message

If I undertstand correctly you do not need six very complex & hard to maintain lines of code that produce variables. Unless this is school work, which it does not appear to be. Plus several parts of the code will not work as posted, IMO. Example:
Code:
sed -n '$p'

If $p is a variable it has to be in double quotes:
Code:
sed -n "$p"

# 5  
Old 12-06-2010
Hello Jim,

I have six tomcat log files. The script should grep latest outofmemory message from the log files and send the mail alert with description "suppose if outofmmemory in tomcat1 server then it should send message 'there is outofmemory in tomcat1 server" and same for tomcat2,tomcat3,tomcat4,tomcat5 and tomcat6. kindly guide.

Path for tomcat log files.

tomcat1logs=/opt/local/tomcat1/logs/catalina.out

tomcat2ogs=/opt/local/tomcat2/logs/catalina.out

tomcat3logs=/opt/local/tomcat3/logs/catalina.out

tomcat4logs=/opt/local/tomcat4/logs/catalina.out

tomcat5logs=/opt/local/tomcat5/logs/catalina.out

tomcat6logs=/opt/local/tomcat6/logs/catalina.out
# 6  
Old 12-06-2010
Try this:
Code:
#!/bin/ksh
d=/opt/local/tomcat*
for fname in $d
do
   tom=$(basename $fname)
   f=${fname}/logs/catalina.out
   var=$(grep 'outofmemory' $f | tail -1)
   if [ ! -z "$var" ] ; then
      echo "$var" | mailx -s "error on $tom"  me@mycompany.com
   fi
done

This will only work if you log rotate the catalina.out files every day (or hour or whenever). Otherwise grep will keep finding the same errors over and over.
# 7  
Old 12-07-2010
Hello Jim,

Thanks for the response. The script is working fine for me after little modifcation.

h1=`hostname`

#d1=`date +%D::::%T`

d1=`date`

tomcat1logs=/opt/local/tomcat1

tomcat2logs=/opt/local/tomcat2

tomcat3logs=/opt/local/tomcat3

tomcat4logs=/opt/local/tomcat4

tomcat5logs=/opt/local/tomcat5

tomcat6logs=/opt/local/tomcat6


for fname in $tomcat1logs $tomcat2logs $tomcat3logs $tomcat4logs $tomcat5logs $tomcat6logs

do

tom=$(basename $fname)

f=${fname}/logs/catalina.out

var=`tail -10 $f | grep -i outofmemory | sed -n '$p' | sed -n -e "s/.*\(OutOfMemoryError\).*/\1/p"`

if [ ! -z "$var" ] ;

then

echo "$var error on $tom on server $h1 @ $d1" | mailx -s "$var error in $tom" $sms_list

else

echo "No OutofMemory on $tom on server $h1 @ $d1" >>/opt/app/mxora/home/mxora/outofmemory.txt

fi

done
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