[mrtg] Re: E-mail Alarm for MRTG.

Justin Shore listuser at vinnie.ksu.ksu.edu
Tue Aug 29 04:00:36 MEST 2000

At 3:07 PM +0800 8/28/00, Jack Lo wrote:
>Hi All,
>I am using MRTG-2.8.12 on RedHat 6.2 platform !
>When there have some SNMP error, I will receive mail at root mail box !!
>Is there have any E-mail alarm setting for MRTG system ?
>Because I also want to get E-mail alarm from MRTG into my personal E-mail
>box " jack at talink.net "

	While creating a mail alias or moving the cron stuff to 
another user would work, it basically sucks because you have to redo 
what you've already done, changing your habits, adding users, 
actually requires work, blah blah blah.  Want an easy solution?  When 
crond runs something and it generates a STDOUT or STDERR it sends 
mail to the owner of the crontab.  That's a given.  To change this 
behavior, add this line to your mrtg user's crontab:

MAILTO="jack at talink.net"

Put it right before your block of MRTG cron entries so it defines 
that environment variable before they run.  From that point in the 
crontab on all STDOUT and STDERR will be sent to the user you define. 
Likewise if you don't want any mail sent you could make it MAILTO="". 
If you want your MRTG user to actually receive certain pieces of 
mail, put them at the beginning of the crontab before your MAILTO tag.

For that tidbit of cron joy and many others...

man 5 crontab


Justin Shore       K-State Linux Distro Mirror, Sysadmin
macdaddy at vinnie.ksu.ksu.edu

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