[Xymon] no reports because of full root disk - workaround

[Christoph Zechner]

Hi,

On 22/10/2021 09:56, Henrik Størner wrote:
> Your Xymon monitor should flag the status as purple, due to missing 
> updates from the client.

Yes, it does, but there are circumstances where we wanted a quicker 
response and it takes a bit until the purple status kicks in.

Cheers
Christoph

> 
> Regards,
> Henrik
> 
> Christoph Zechner skrev den 22-10-2021 09:47:
> 
>> Hi,
>>
>> a while ago, we encountered a rather annoying problem: if the root 
>> disk of our Linux servers got full between two xymon checks, we were 
>> not notified, because xymon was not able to report this, due to to 
>> remaining space. It did not matter whether the machine was in xymon 
>> local mode or not (we wanted to be sure).
>>
>> We then found a workaround for this problem:
>>
>> * creating a ramdisk (10 MB should suffice)
>> * mount it as /var/lib/xymon/temp (unlike "tmp" originally)
>> * change the tmp location in xymonclient.cfg
>> * restart xymon-client
>>
>> This allows the system to send reports even if the root disk is 
>> completely full and there's no need for repartitioning or adding other 
>> disks.
>>
>> Any thoughts about that? Are there any repercussions I did not think 
>> about? I'd love to hear your opinions.
>>
>> Thanks in advance!
>>
>> Cheers
>> Christoph
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> 
>