Re: [hobbit] Devmon / MRTG

[Thomas Leavitt <thomleavitt (at) gmail.com>]

I've just got devmon set up and working... more or less. I've hacked
the Redhat init.d script, but I'd rather have a Debian/Ubuntu native
start up script if someone's already written one.

I've no experience with SNMP, but I think I basically get the idea of
how to develop templates after looking at the wikibook section on
devmon, so I guess I'll be developing a template for the Netgear
STM300 unless someone's already done it. :) Netgear ReadyNAS 1100? :)

Regards,
Thomas Leavitt

On Mon, Aug 17, 2009 at 7:49 AM, Buchan Milne<bgmilne (at) staff.telkomsa.net> wrote:
> On Friday, 14 August 2009 15:08:33 mv652 (at) softhome.net wrote:
>> Hi,
>>
>> Could I get a quick-and-dirty explanation regarding the Devmon
>> implementation in Xymon 4.3.x?
>
> Nothing has changed regarding Devmon in Xymon 4.3.x.
>
> However, Xymon itself has some basic native SNMP support, which is new in
> 4.3.x.
>
>> The way I understand it, Devmon provides SNMP capabilities to Xymon so the
>> monitoring server can poll SNMP capable devices.
>>
>> How is this different to Integrating MRTF data into XYMON, for example?
>
> Devmon only polls devices, does conversion and formatting of data, which it
> then sends to Xymon as a normal status message. A devmon RRD collector is now
> shipped with Xymon (as of 4.2.2), that allows RRD graphs to be created by
> Xymon for any test/template that includes data intended for this purpose
> (using the rrd option to the TABLE operator in the template file on the devmon
> side), if the test is mapped to use this collector (in the TEST2RRD variable
> in hobbitserver.cfg).
>
> Besides the graphs, devmon will also change the "colour" of the tests based on
> thresholds, allowing you to alert on SNMP data (including non-graph data).
>
>> If I am interesting in getting bandwidth for various device interfaces, I
>> am assuming it is best to do via Devmon rather than integrate MRTG?
>
> I think it is probably easier to get bandwidth graphs up with Devmon than with
> MRTG, and alerts based on link utilisation will be available out-the-box.
>
>> Lastly, is there a readme / howto that explains devmon-xymon setup?
>
> If you're on a distro that provides devmon, it is more or less a matter of:
>
> # $install devmon
>
> (where install=urpmi for Mandriva, or $install="yum install" on RHEL or CentOS
> if you have added the repo at e.g.
> http://staff.telkomsa.net/packages/rhel5/xymon)
>
> # vi /etc/devmon.cfg
>
> (set your SNMP community strings in the SNMPCIDS variable, the others should
> have adequate defaults)
>
> # /etc/init.d/devmon readbbhosts
>
> # /etc/init.d/devmon start
>
>
> If you're adventurous, you could add the weathermap (see
> http://staff.telkomsa.net/~bgmilne/xymon/).
>
> If you're not on a distro with packages available, please see the INSTALLATION
> and USING files shipped in the docs directory.
>
> Regards,
> Buchan
>
> To unsubscribe from the hobbit list, send an e-mail to
> hobbit-unsubscribe (at) hswn.dk
>
>
>