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From Animesh Chaturvedi <animesh.chaturv...@citrix.com>
Subject RE: [Discuss] SNMP Alerts support in CloudStack
Date Wed, 02 Jan 2013 18:11:23 GMT


> -----Original Message-----
> From: Ram Ganesh [mailto:Ram.Ganesh@citrix.com]
> Sent: Tuesday, December 18, 2012 9:49 PM
> To: cloudstack-dev@incubator.apache.org
> Subject: RE: [Discuss] SNMP Alerts support in CloudStack
> 
> > -----Original Message-----
> > From: David Nalley [mailto:david@gnsa.us]
> > Sent: 18 December 2012 20:20
> > To: cloudstack-dev@incubator.apache.org
> > Subject: Re: [Discuss] SNMP Alerts support in CloudStack
> >
> > On Tue, Dec 18, 2012 at 6:12 AM, Anshul Gangwar
> > <anshul.gangwar@citrix.com> wrote:
> > > Hi,
> > >        Currently CloudStack shows alerts on dashboard and can send
> > email
> > > alerts. With this feature it will be able to send SNMP alerts to
> > > configured external SNMP Managers.  Currently I am planning to send
> > SNMP
> > > traps for the alerts which are supported in CloudStack 4.0. I am
> > > planning to use snmp4j library available under Apache License to
> > > implement this feature.
> >
> > Fascinating - I am looking forward to seeing this!
> >
> > >         - Currently planning to support up to 20 SNMP managers
> >
> > This seems arbitrary. Why 20?
> 
> 	Yes. It is an arbitrary number but we should keep it a low value else
> CloudStack server will end up spending CPU cycles forwarding to as many
> managers. Typical SNMP managers have capability to forward these events
> to other SNMP managers and in turn can do version conversion too.
> 
[Animesh] 20 is already a high number
> >
> > >         - Version 1 and 2 will be supported
> >
> >
> > Why not v3 as well? SNMPv1 is practically deprecated, so why bother
> > with v1? v2 is a nice middle ground - v3 is where everyone wishes to
> > be if they could start from scratch.
> 
> 	SNMPv1 is there for completeness sake just in case there is a very
> legacy system around. But I too agree we can drop this.
> 
> >
> > >         - We need a unique SNMP OID for CloudStack. We need to
> > register with
> > > IANA. Is there an established process in Apache to follow and get
> > one?
> >
> > I'll be happy to figure out how this gets done. - Actually some quick
> > googling shows that the ASF already has an enterprise OID - and one of
> > our mentors has documented that here:
> > https://cwiki.apache.org/DIRxPMGT/oid-assignment-scheme.html
> > I will follow up with Alex and see if we can get an assignment.
> >
> 
> 	That is excellent!
> >
> >
> > So your idea here seems like it is targeting just sending traps, but
> > I'm far more interested long-term in being able to query the SNMP
> > daemon (and there likely will already be one on the host); so as you
> > are designing the MIB please do plan ahead for such things. The page
> > above is a good starting point around MIB design.
> >
> > If you need help around this, I am happy to lend what little I know
> > about the subject of SNMP, or connect you with experts in the field.
> >
> > --David

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