[Xymon] Where to find the latest hostdata (or: How to monitor one process on two servers)?

[Asif Iqbal]

On Thu, Jan 12, 2012 at 12:13 PM, Asif Iqbal <vadud3 at gmail.com> wrote:
> On Thu, Jan 12, 2012 at 11:05 AM, Ward, Martin <Martin.Ward at colt.net> wrote:
>> Hi all,
>>
>>
>>
>> I have a pair of servers that run Veritas Cluster Software and they have a
>> number of different processes that they run in turn. Simply put it means
>> that there is a process that will be running on one or another of the two
>> servers and at any given time I will not know which server it runs on. The
>> important thing for me is that it is running, so I set about creating a
>> monitor that will check for this.
>>
>>
>>
>> I can’t have something that runs on the client since I won’t know which
>> client the process runs on but it struck me that the server always has an up
>> to date process list, so I could simply read the hostdata file for the two
>> servers, rip out the process list, concatenate the two and search for the
>> specific process name, simple!
>>
>>
>>
>> This is a brilliant idea that would work if only I had access to the up to
>> date client data. It seems that the data stored in the hostdata directory
>> only changes when a status for that server changes to an alert state
>> (according to the xymond_hostdata web page) so if the process switches to a
>> different machine but nothing actually changes the alert status of the
>> client, the latest host data is not stored in the hostdata/ subdirectory.
>>
>
> xymon localhost "clientlog client.example.com section=ps" | grep pr[o]c
>
> will let you know if the process is running on client.example.com
>
> create a new column for that process called proc for all your hosts
> with an ext script on the server
>
>
>
> Then use combo.cfg to generate alert like this
>
> allhosts.proc = ( client1.proc + client2.gis ) == 1

correction:

 allhosts.proc = (client1.proc + client2.proc) == 1


>
> as long as the result is 1 allhosts.proc won't be red
>
> HTH
>
>
>
>
>>
>>
>> I know that the latest host data is stored somewhere because I can see it in
>> the web browser. Does anyone know where this up to date host data is kept
>> such that I can utilise the information in it?
>>
>>
>>
>> Failing that do you have any other suggestions, recommendations or scripts
>> lying around that will enable me to look for a process across more than one
>> server?
>>
>>
>>
>> |\/|
>>
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>
>
>
> --
> Asif Iqbal
> PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?



-- 
Asif Iqbal
PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?