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Old 01-13-2010, 09:04 AM   #1
kopper27
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monitor filesystems and notify @


hi guys

I need to monitor my filesystems and get an email when the status is warning >=80 and critical >=90.
I am not very good for scripting so I found an script but is not working for me

This Red Hat Enterprise 5.0

Script

Code:
ADMIN="me@somewher.com"
# set alert level 90% is default
ALERT=90
df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read output;
do
  #echo $output
  usep=$(echo $output | awk '{ print $1}' | cut -d'%' -f1  )
  partition=$(echo $output | awk '{ print $2 }' )
  if [ $usep -ge $ALERT ]; then
    echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)" |
     mail -s "Alert: Almost out of disk space $usep" $ADMIN
  fi
done
I am getting these errors

Code:
./test: line 9: [: /dev/mapper/VolGroup00-root: integer expression expected
./test: line 9: [: /: integer expression expected
./test: line 9: [: /dev/mapper/VolGroup00-var: integer expression expected
./test: line 9: [: /var: integer expression expected
now this is my df -h command

Code:
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-root
                      120G   20G   94G  18% /
/dev/sda1              99M   12M   83M  12% /boot
tmpfs                 1.7G     0  1.7G   0% /dev/shm
/dev/mapper/VolGroup00-var
                      9.7G  1.3G  7.9G  15% /var
any idea what could be causing that and how to fix it?

or maybe someone has a better script?

thanks a lot

Last edited by kopper27; 01-13-2010 at 09:19 AM.
 
Old 01-13-2010, 12:16 PM   #2
Tinkster
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Use "df -HP" to begin with, so you get all output for one volume
on one line ....
 
Old 01-13-2010, 01:06 PM   #3
kopper27
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thanks a but now I get no output from the script

./script and nothing comes up

what could be?
 
Old 01-13-2010, 01:25 PM   #4
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Maybe the fact that none of the disks are full?
 
Old 01-13-2010, 01:36 PM   #5
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Btw, you could significantly shorten the script
Code:
ALERT=90
df -HP | awk '!/^Filesystem|tmpfs|cdrom/ { print gensub( /%/, "", "1",$5) " " $1 }' | while read usep partition
do
  if [ $usep -ge $ALERT ]; then
    echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)" | mail -s "Alert: Almost out of disk space $usep" $ADMIN
  fi
done
 
Old 01-13-2010, 04:03 PM   #6
kopper27
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looks like that's the thing...

now I get this

Code:
You must specify direct recipients with -s, -c, or -b.
I am testing the script with a server with a filesystem 85%
 
Old 01-13-2010, 04:09 PM   #7
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Ooops ... if you copied my version:
the definition of ADMIN="yadda@blah.org" is missing.

Plus you may have to play with \" around the subject,
but that's untested.
 
Old 01-20-2010, 03:32 PM   #8
kopper27
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hi again

This what I have sorry I did not use your code
looks like it working what I don't know (feel very stupid for it)
how to test it using email do I need a SMTP Server or what?

if someone can test it

basically it has 2 type of messages WARNING and ALERT


Code:
ADMIN="karlo@yahoo.com"
# set alert level 90% is default
WARNING=70
ALERT=85
df -HP | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read output;
do
  #echo $output
  usep=$(echo $output | awk '{ print $1}' | cut -d'%' -f1  )
  partition=$(echo $output | awk '{ print $2 }' )
  if [ $usep -ge $WARNING ] && [ $usep -lt $ALERT ]; then
  echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)"
  fi
  if [ $usep -ge $ALERT ]; then
    echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)" #|
    # mail -s "Alert: Almost out of disk space $usep" $ADMIN
  fi
done
 
Old 01-20-2010, 04:47 PM   #9
chrism01
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You'll need to ensure sendmail (or equiv) is running . A mail server is pretty std as the system frequently talks to itself. You can check by logging in as root and running

mailx

at the cmd line.
There should be a few msgs there.

Note that by default sendmail is installed to only listen to localhost(127.0.0.1).
If you want it to listen to other systems, amend

DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')

to

dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

in /etc/mail/sendmail.mc & restart it ('service sendmail restart' iirc).
 
Old 01-21-2010, 10:13 AM   #10
kopper27
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let me see If I got this

from this
Code:
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')
to this
Code:
dnl # DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
or
Code:
DAEMON_OPTIONS(`Port=smtp,Name=MTA')dnl
that's it? I don't need to specify an SMTP Server?
my question is because as you see above the script I will be running
once it finds a problem will have to send me an email ton my external @ kopper27@xxxxx.com

thanks

thanks a lot

Last edited by kopper27; 01-21-2010 at 10:15 AM.
 
Old 01-21-2010, 05:14 PM   #11
chrism01
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You only need to worry about that if you want to accept incoming emails to this machine from other systems. Outgoing is not a problem.
You can use

ps -ef|grep sendmail

to see if it's running. That edit is only relevant to sendmail; other MTAs have different cfgs.
 
Old 01-22-2010, 08:44 AM   #12
kopper27
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Quote:
Originally Posted by chrism01 View Post
You only need to worry about that if you want to accept incoming emails to this machine from other systems. Outgoing is not a problem.
You can use

ps -ef|grep sendmail

to see if it's running. That edit is only relevant to sendmail; other MTAs have different cfgs.
so you mean I only need the sendmail up and running(no configuration at all) and if it has internet connection it will send me an email to my kopper27@xxxxx.com

mmm If I got it correctly that would be cool
 
  


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