Comments on: MMM Nagios plugin

By: roni

roni — Mon, 05 Dec 2011 09:33:15 +0000

Hello
i have a question about check_mm. If i start that scrip on the mmm_control Server its ok but i start that script on my nagios server whith check_nrpe comes following message:CRITICAL: Cannot Find/Execute mmm_control

I hope you can me help

By: Titanium Jewellery

Titanium Jewellery — Thu, 06 Jan 2011 03:45:14 +0000

I am really eager to get nagios monitoring my mmm deployment, but am running into a few snags. I have nrpe working properly and I can call check_mmm, but it always returns status ok no matter what. Any ideas?

By: istvan_podor

istvan_podor — Fri, 13 Aug 2010 21:15:56 +0000

@Josh

Sorry for ignoring your comment so long. I have added the changes you made and committed the code.

Thanks a lot. If you have any other patches, let us know!

Istvan

By: Josh

Josh — Thu, 07 Jan 2010 05:29:28 +0000

The issue for me was that the nrpe daemon, running as the nrpe user, did not have read access to the files in /etc/mysql-mmm/ . We chgrp’d them and now it works

When the nrpe daemon runs the command and it can’t access the files config files it returns an ‘OK’. Maybe the code needs to be altered to not show OK if it can’t read the files??

[root@mmmmonitordev01 ~]# cd /etc/mysql-mmm/
[root@mmmmonitordev01 mysql-mmm]# ls -la
total 36
drwxr-xr-x 2 root root 4096 Jan 4 15:38 .
drwxr-xr-x 84 root root 12288 Jan 7 14:37 ..
-rw-r—– 1 root nrpe 33 Dec 21 15:13 mmm_agent.conf
-rw-r—– 1 root nrpe 941 Jan 4 15:38 mmm_common.conf
-rw-r—– 1 root nrpe 325 Jan 4 15:14 mmm_mon.conf
-rw-r—– 1 root nrpe 1293 Dec 21 15:13 mmm_tools.conf

These are the modifications we made to check_mmm

#v1 ERROR Monitor message changed
if ($mmm_output =~ /DAEMON IS NOT RUNNING/) {
my $msg = “CRITICAL: MMM Daemon is not running”;
report_error($msg, $ERRORS{‘CRITICAL’});
}
#v2 ERROR Monitor message changed
if ($mmm_output =~ /ERROR: Can’t connect to monitor daemon/) {
my $msg = “CRITICAL: MMM Monitor Daemon is not running”;
report_error($msg, $ERRORS{‘CRITICAL’});
}

#mmm2 extend
if ($mmm_output =~ m/passive/i) {
my $msg = “CRITICAL: MMM Monitor Daemon is in passive mode”;
report_error($msg, $ERRORS{‘WARNING’});
}

if ($mmm_output =~ m/agent/i) {
my $msg = “CRITICAL: MMM Agent Daemon is NOT running on ALL DB’s in the cluster”;
report_error($msg, $ERRORS{‘CRITICAL’});
}

By: Josh

Josh — Wed, 06 Jan 2010 04:56:04 +0000

I have the same problem, we are running mmm2. When i run the check locally i get the following;

[root@mmmmonitordev01 check-mysql-all]# /usr/lib64/nagios/plugins/check-mysql-all/check_mmm
CRITICAL: db1(10.68.246.71) master/HARD_OFFLINE. Roles:

Then when i run it via nrpe i get;

[root@monitor01 ~]# /usr/local/nagios/libexec/check_nrpe -u -n -H 10.68.246.70 -c check_mmm
OK

Any ideas? Running in verbose mode does not show anything unusual.

By: istvan_podor

istvan_podor — Wed, 30 Dec 2009 06:52:19 +0000

No matter what at all? Even when your MMM stopped?

did you tried to set up the warning and critical levels?

MMM plugin is designed to return OK(0) if its doesn’t find any problem.
You can also try running with verbose option to see whats wrong.

You are using mmm1 or mmm2?

By: Elliot Davis

Elliot Davis — Mon, 28 Dec 2009 23:30:20 +0000

Istvan, Hi, I am really eager to get nagios monitoring my mmm deployment, but am running into a few snags. I have nrpe working properly and I can call check_mmm, but it always returns status ok no matter what. Any ideas?

By: Ryan Lowe

Ryan Lowe — Fri, 20 Nov 2009 06:08:43 +0000

Istvan, no need to fork. Ping me on IRC & I’ll give you commit rights:)

By: istvan_podor

istvan_podor — Wed, 28 Oct 2009 12:06:34 +0000

not a bad idea I think. I’m also writing a munin plugin (I know it’s wierd but everybody love drawing graphs right? ) )

By: Walter

Walter — Wed, 28 Oct 2009 10:31:32 +0000

Hey Istvan,

I’m working on one for zabbix. I was thinking of launchpad, maybe we can add it to mmm itself on launchpad?