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I am trying to get munin to notify me via email. I have configured munin and it reports critical and warning values but no alerts are being sent neither is any script being called. Can you please help me out with this?

I have included part of the munin.conf below

# Drop somejuser@fnord.comm and anotheruser@blibb.comm an email everytime 
# something changes (OK -> WARNING, CRITICAL -> OK, etc)
#contact.someuser.command mail -s "Munin notification" somejuser@fnord.comm\

contact.prashanth.command echo "Munin notification" | sendmail -t xxx@xxx.net
contact.prashanth.always_send warning critical

contact.root.command echo "Munin notification" | sendmail -t xxxl@xxx.net
contact.root.always_send warning critical

contact.pipevia.command | /home/prashanth/script.sh /home/prashanth/script.sh

None of this works. Here is the munin-limits.log

2011/09/26 14:58:12 Opened log file
2011/09/26 14:58:12 [INFO] Starting munin-limits, getting lock /var/run/munin/munin-limits.lock
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 722.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 725.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 740.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 754.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 759.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $text in length at /usr/share/perl5/Munin/Master/LimitsOld.pm line 774.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $res[3] in join or string at /usr/share/perl5/Munin/Master/LimitsOld.pm line 777.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 722.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 725.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 740.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 754.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 759.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $text in length at /usr/share/perl5/Munin/Master/LimitsOld.pm line 774.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $res[15] in join or string at /usr/share/perl5/Munin/Master/LimitsOld.pm line 777.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 722.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 725.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 740.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 754.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 759.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $text in length at /usr/share/perl5/Munin/Master/LimitsOld.pm line 774.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $res[1] in join or string at /usr/share/perl5/Munin/Master/LimitsOld.pm line 777.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 722.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 725.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 740.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 754.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $a[0] in pattern match (m//) at /usr/share/perl5/Munin/Master/LimitsOld.pm line 759.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $text in length at /usr/share/perl5/Munin/Master/LimitsOld.pm line 774.
2011/09/26 14:58:12 [PERL WARNING] Use of uninitialized value $res[1] in join or string at /usr/share/perl5/Munin/Master/LimitsOld.pm line 777.
2011/09/26 14:58:12 Baz?
2011/09/26 14:58:12 [INFO] munin-limits finished (0.02 sec)
2011/09/26 14:58:12 Command "prashanth" stderr: Munin notification - this is a test mail from the user prashanth | sendmail -t xxx@xxx.net

What am I missing here and why are emails not being sent?

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migrated from stackoverflow.com Sep 26 '11 at 7:43

This question came from our site for professional and enthusiast programmers.

There are two things you need to set for Munin to send out alerts. If both items are not set, mails will not be sent. This is how I have Munin configured to send e-mail via localhost on the machine Munin is running on. Please compare to what you have & adjust accordingly:

contact.myalert.command mail -s "MUNIN - ${var:group} :: ${var:host}" mymail@domain.com
contact.myalert.always_send warning critical

And then under the host tree I have this setup. Note the contacts myalert line:

# a simple host tree
[localhost.localdomain]
    address 127.0.0.1
    use_node_name yes
    contacts myalert
share|improve this answer

It seems like your config doesn't match the example from the munin.conf file. The example is:

contact.someuser.command mail -s "Munin notification" somejuser@fnord.comm

And you have:

contact.prashanth.command echo "Munin notification" | sendmail -t xxx@xxx.net

I would expect something like this to work:

contact.prashanth.command mail -s "Munin notification" xxx@xxx.net
share|improve this answer

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