[Nagios-users] tracing nagios actions

mark bradley gopearls42 at gmail.com
Mon Dec 20 18:19:34 UTC 2010


Ah, thanks for the clarification, Steve. And now I've found the problem,
too. I'll document here so that others may learn from my goofiness.

So, running the check by hand:
/usr/lib/nagios/plugins/check_by_ssh -q -H db1.xxx.com -i
/etc/nagios/nagios_private/id_rsa -l cacti -n lh -s c1 -C
'/usr/lib/nagios/plugins/check_disk *-w 80 -c 95* -p /mnt/Backup'
DISK OK - free space: /mnt/Backup 13470 MB (18% inode=99%);|
/mnt/Backup=58284MB;75515;75500;0;75595

It seem to be telling me that the disk is OK, however df on the server
shows:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/SysVolGroup-lvBackup
74G 57G 14G 82% /mnt/Backup
In reality, then, 82% of the partition is used and the check was set to warn
at 80 and critical at 95 -- why did the check not trigger?

Because the specification to check_disk, if using %-ages of use, should have
a % sign after the thresholds, as in:
usr/lib/nagios/plugins/check_by_ssh -q -H db1.xxx.com -i
/etc/nagios/nagios_private/id_rsa -l cacti -n lh -s c1 -C
'/usr/lib/nagios/plugins/check_disk *-w 80% -c 95%* -p /mnt/Backup'

Best,
Mark

Mark

On Mon, Dec 20, 2010 at 12:13 PM, steve f <a31modela at hotmail.com> wrote:

>  Mark,
>
> I think Salvatore means run the check manually from the command line , make
> sure you run it as the nagios user and try setting tha warning & critical
> values to something that will make it fail also:
>
> /usr/local/nagios/libexec > ./check_disk -w 50 -c 70 -p /home
> DISK OK - free space: /home 440 MB (95% inode=99%);|
> /home=20MB;436;416;0;486
>
> The -p just checks a specific path.  ( FYI )
>
> Steve
>
>
>
>
> ------------------------------
> Date: Mon, 20 Dec 2010 11:50:14 -0500
> From: gopearls42 at gmail.com
>
> To: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] tracing nagios actions
>
>
> Hi Salvatore,
>
> They're all Unix (Redhat) servers. By check command do you mean nagios -v?
> I've done that and I do not get an errors.
>
> Thanks,
> Mark
>
> On Mon, Dec 20, 2010 at 11:35 AM, Polifemo, Salvatore <
> polifemos at conedsolutions.com> wrote:
>
>  Are these Windows or *nix server?
>
>
>
> Either wau run the check command manually from a console and see what the
> results are.
>
>
>
>
>
>
>
> *Salvatore Polifemo*
>
> *Sr. Systems Security Specialist*
>
> *ConEdison Solutions*
>
> *100 Summit Lake Drive*
>
> *Valhalla, NY 10595*
>
>
>
> *From:* mark bradley [mailto:gopearls42 at gmail.com]
> *Sent:* Monday, December 20, 2010 11:14 AM
> *To:* nagios-users at lists.sourceforge.net
> *Subject:* [Nagios-users] tracing nagios actions
>
>
>
> Hi,
>
>
>
> I have a small-ish number of servers and I've tried to configure Nagios to
> warn me about disk-space running low. The problem is that, although disk
> space is above both warning and critical levels I'm not getting any
> notifications.
>
>
>
> The nagios.log file is silent on the topic and nagios -v does not produce
> any errors or warnings.
>
>
>
> Is there a way to trace what actions nagios is considering (much like make
> -n) in order to debug this problem? Is there a debugging methodology defined
> somewhere? If it's in your head can you share?
>
>
>
> Thanks,
>
> Mark
>
>
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