[Devmon] Help with devmon develop

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

Hi Buchan,

I've changed devmon to read bbhosts and get the v3 parameters. now my
problem is the dm_snmp.pm file. I have some doubts,  Do you think by
changing the connection method is sufficient to work? Or I have rewrite all
the dm_snmp.pm?

Thanks in advance,

Mario.




On Thu, Jun 24, 2010 at 3:47 PM, Mario Andre Panza
<row...@gm...>wrote:

> 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
>>
>
>