Re: [Devmon] Devmon snmp v3

[Mario A. P. <row...@gm...>]

Hi Buchan,

This week I've started to work in this solution. I've verified that the
developer of snmp_session now works on Net_SNMP_util.pm utility that is
based on Net:SNMP.
http://code.google.com/p/snmp-session/source/browse/trunk/Net_SNMP_util.pm?r=730
I'm trying to use this file. Do you think that use this utility is a good
way to implement the snmpv3 support?

Regards,

Mario.



On Fri, Mar 26, 2010 at 6:12 AM, Buchan Milne <bg...@st...>wrote:

> On Thursday, 25 March 2010 15:22:59 mario andre wrote:
> > Hi Buchan, How are you?
> >
> > I will start to try a patch in order to devmon support snmp v3, Do you
> have
> > any hint on what files change?
>
> The biggest problem is that SNMP_Session doesn't have SNMPv3 support.
>
> The funny thing is that SNMP_Session is by the MRTG people, but they seem
> to
> have abandoned it from a maintenance point of view, and they have hacked
> SNMPv3 support into MRTG using some other modules, when it would have made
> more sense to add it to SNMP_Session.
>
> The other question here is whether we should consider switching SNMP
> modules,
> to Net::SNMP (which seems to be a fork or alternative to SNMP_Session),
> which
> already has SNMPv3 support, or SNMP (from the net-snmp project) which has
> SNMPv3 support as well as MIB parsing support.
>
> Maybe for now we should just investigate how much effort it is to switch to
> a
> different SNMP module without any new features. While I would really like
> MIB
> parsing (which would reduce the amount of effort in supporting new
> devices),
> there are disadvantages (people need to have all the MIB files) and
> requiring
> net-snmp could be a limiting factor for people on proprietary unix systems
> (though for linux distros it shouldn't be an issue ... and I always run
> devmon
> on linux myself).
>
> > or If the best way is to do like MRTG and
> > create in devmon.cfg a flag to enable v3? In bbhosts you think should be
> a
> > good way to put a user/password definition?
>
> I think we could treat SNMPv3 credentials similarly to SNMPv1/v2c community
> names, by allowing a list of default usernames/passwords etc. in the
> devmon.cfg, but also allow per-host overrides in bb-hosts (for now).
>
> > You are interested in work together?
>
> Of course. I would very much like to see SNMPv3 support in devmon, but it
> is
> not personally my highest priority (for work purposes, where e.g. MIB
> parsing,
> and better SNMP trap management in Xymon are more urgent). So, I welcome
> any
> assistance.
>
> For now it might be best for you to work from an svn checkout of trunk, and
> send me the output of (e.g.) 'svn diff' or similar. Once we have something
> in
> progress we can consider if you want svn commit access, or whether I commit
> your changes.
>
> I will try and assist you where necessary, but for now I won't have time to
> actually work on the actual SNMPv3 support directly.
>
> BTW, we may also want to start documenting some of our plans on the wiki
> ... I
> actually have a bit of a roadmap I should put there. If you're interested,
> it
> is at http://sourceforge.net/apps/mediawiki/devmon/ . Let me know if you
> can
> edit there, if not I might have to add you to the project.
>
>
>
> Regards,
> Buchan
>