[Xymon] "msgs" alerts, sending 10240 bytes and line-buffering

Adam Goryachev mailinglists at websitemanagers.com.au
Fri Aug 28 03:10:11 CEST 2015

On 28/08/15 10:00, Greg Earle wrote:
>> On Aug 25, 2015, at 21:05 PM, Adam Goryachev wrote:
>> On 25/08/15 20:35, Greg Earle wrote:
>>>> On Aug 25, 2015, at 1:13 PM, Jeremy Laidman wrote:
>>>> You might be right that the message is being clipped.  If so, you should
>>>> see Xymon log messages to that effect.
>>> Thanks Jeremy, where in the logs exactly?  Do I grep for "clipped"?  :-)
>>>> Perhaps add the IGNORE clause to the client-local.cfg message instead.
>>>> This will cause the messages to be dropped at the client side.  Not only
>>>> can you forget about these messages on the Xymon server, but also you're
>>>> less likely to have a clipped message.  Like so:
>>>> [sunos]
>>>> log:/var/adm/messages:10240
>>>> ignore refused connect from itsecurity-scanner.my.do.main
>>> Excellent idea - hadn't thought of th... wait, hang on.  The only place I
>>> have a "client-local.cfg" file is on my *server*, not on any of my clients.
>> Ummm, actually this file is only supposed to exist on the server, and
>> when the client connects to report the status, it will also download a
>> copy of it's (section) of the file and apply that for future status updates.
>> Note: I forget the details, but it can take 15 minutes (3 cycles) before
>> you will see the changes applied/working.
> Thanks for clarifying that, Adam.  I removed the client-side "client-local.cfg"
> file and made the suggested changes on the server-side.  The incidents of
> "clipped" messages file text causing red alert triggers have lessened, but I'm
> not sure they've stopped entirely.
> Do I need to restart all of my Solaris clients to pick up this (server-side)
> change?  (viz. "it will also download a copy of it's (section) of the file
> and apply that for future status updates")

No need to restart the client, but you will need to ensure the section 
you added it to will apply to all the clients you are expecting. Since 
the server only returns the relevant section to the client, who might be 
using a different section compared to what you expected..... It should 
take between 10 minutes and 30 minutes for the change to be applied, if 
it is taking longer, then something is wrong with the config.


Adam Goryachev Website Managers www.websitemanagers.com.au

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