[Xymon] Configure per-host filesystem threshold

[J.C. Cleaver]

On Fri, October 21, 2016 6:00 am, Mike Burger wrote:
> On 2016-10-21 1:59 am, Andy Smith wrote:
>> Seip, Christopher (HPN SIS team) wrote:
>>> An update:
>>>
>>> This was an apt-managed package named "xymon" (4.3.25) for Ubuntu.
>>>
>>> I just compiled and installed Xymon 4.3.27; it exhibits the same
>>> behavior, so this strongly looks like I'm doing something wrong in the
>>> xymon configs.
>>>
>>> Thanks,
>>>
>>> - Chris
>>>
>>>
>>> Root-# egrep -v '^#' /usr/local/xymon/server/etc/analysis.cfg
>>>
>>> HOST=fqdn.of.my.monitored.host
>>> 	DISK /disk/data 96 98
>>>
>>>
>>> DEFAULT
>>> 	# Ignore some usually uninteresting tmpfs mounts.
>>> 	DISK    /dev IGNORE
>>> 	DISK    /dev/shm IGNORE
>>> 	DISK    /lib/init/rw IGNORE
>>> 	DISK    /run IGNORE
>>> 	# These are the built-in defaults. You should only modify these
>>> 	# lines, not add new ones (no PROC, DISK, LOG ... lines).
>>> 	UP      1h
>>> 	LOAD    5.0 10.0
>>> 	INODE	* 70 90
>>> 	MEMPHYS 100 101
>>> 	MEMSWAP 50 80
>>> 	MEMACT  90 97
>>>
>>> Root-#
>>>
>>>
>>> -----Original Message-----
>>> From: Seip, Christopher (HPN SIS team) Sent: Thursday, October 20,
>>> 2016 2:04 PM
>>> To: 'Dennis Riley' <driley at malone.edu>; xymon at xymon.com
>>> Subject: RE: [Xymon] Configure per-host filesystem threshold
>>>
>>> I do indeed; just double-checked.
>>>
>>> - Chris
>>>
>>> -----Original Message-----
>>> From: Dennis Riley [mailto:driley at malone.edu] Sent: Thursday, October
>>> 20, 2016 1:37 PM
>>> To: Seip, Christopher (HPN SIS team) <chris.seip at hpe.com>;
>>> xymon at xymon.com
>>> Subject: RE: [Xymon] Configure per-host filesystem threshold
>>>
>>> Hi Chris,
>>>  You do have your entries above the DEFAULT entry so that you match
>>> your
>>> entry first, right?
>>>   Dennis
>>>
>>> -----Original Message-----
>>> From: Xymon [mailto:xymon-bounces at xymon.com] On Behalf Of Seip,
>>> Christopher
>>> (HPN SIS team)
>>> Sent: Thursday, October 20, 2016 4:03 PM
>>> To: xymon at xymon.com
>>> Subject: [Xymon] Configure per-host filesystem threshold
>>>
>>> I'm new to Xymon, have set up my first client monitoring config, and
>>> haven't
>>> gotten per-host filesystem thresholds to work for that host yet. In
>>> /etc/xymon/analysis.cfg, I've got these lines:
>>>
>>> HOST=my.hosts.fqdn
>>>         DISK /disk/data 96 98
>>>
>>> But my 95% filesystem-full condition continues to come up as a red
>>> alert.
>>> I've played with a few different syntaxes, wildcards, and other config
>>> files. This looks to me like the right way to do it... Feels like I'm
>>> overlooking something really basic here. Thanks,
>>>
>>> - Chris
>>> [Running Xymon 4.3.25 on Ubuntu 16.04.1. New to Xymon; used to use Big
>>> Brother years ago.]
>>>
>>
>> What is in hosts.cfg?  Is it 'fqdn.of.my.monitored.host' or is it just
>> 'host'?  Try
>>
>> HOST=%host
>>   DISK /disk/data 96 98
>
> In addition to the question from Andy, did you remember to add a host
> specific wildcard DISK monitor?
>
> I ran into a similar situation, back when I first started out and was
> told that once you've added any host specific DISK monitors, they
> override all DEFAULT disk monitor settings. As a result, you have to
> follow them up with a host specific wildcard entry, a la:
>
>     DISK   /disk/data 96 98
>     DISK   * 90 95
>

Also: Can you confirm that your client is running in the default
server/centrally-configured mode -- that is, without the "--local" option.
That can sometimes be a trip-up for people coming directly from BB. In
that mode, the localclient.cfg file on the client is used for evaluation
and processing via analysis.cfg never happens.


It's also helpful when debugging thresholds to validate through
xymond_client that it's doing what you're thinking it's doing. You can
have it dump its (processed) config by running:

xymoncmd xymond_client --dump-config | grep DISK


HTH,
-jc