My implementation of log4j appender will require changes in log4j-cloud.xml file and addition/modification of some LOG statements in CloudStack. Which I suppose is not making it tightly coupled with CloudStack.
Thanks, Anshul On 17/01/13 23:38, Ram Ganesh wrote: > Anshul, > > If you implement your own SNMPlog4j appender then again it will not be > tightly coupled with CloudStack? Can you confirm that? > > Thanks, > RamG > >> -----Original Message----- >> From: Anshul Gangwar [mailto:anshul.gang...@citrix.com] >> Sent: 17 January 2013 16:58 >> To: cloudstack-dev@incubator.apache.org >> Subject: Re: [Discuss] SNMP Alerts support in CloudStack >> >> Alex, >> >> I have gone through the snmplog4jappender. As per my understanding >> there >> is no way to send traps to multiple SNMP Managers. One other thing >> which >> it is lacking is defining different OIDs for different kind of alerts. >> Even in some way we are able to achieve above things using the library >> then we have to make many changes in library. As per my understanding >> it >> will be better to write our own SNMP log4j appender on similar lines >> of >> this library. That will be less tedious work then using this library. >> >> The default implementations( some implementations given in that >> library) >> of library is using incompatible license libraries. >> Three default implemetations are >> JoeSNMPTrapSender uses opennms library which has GPL License >> http://www.opennms.org/wiki/Commercial_OpenNMS >> WengsoftSNMPTrapSender uses library which has COPYRIGHT (c) 1999 by >> WENG-SOFT Inc. Brosard QC CA >> NetSnmpCommandLineTrapSender uses library which has >> http://www.net-snmp.org/about/license.html license >> >> >> Thanks, >> Anshul >> >> On 16/01/13 02:32, Alex Huang wrote: >>> In that case, why not just use snmplog4jappender? >>> >>> http://code.google.com/p/log4j-snmp-trap-appender/ >>> >>> --Alex >>> >>>> -----Original Message----- >>>> From: Murali Reddy [mailto:murali.re...@citrix.com] >>>> Sent: Tuesday, January 15, 2013 2:36 AM >>>> To: cloudstack-dev@incubator.apache.org >>>> Subject: Re: [Discuss] SNMP Alerts support in CloudStack >>>> >>>> On 15/01/13 12:03 PM, "Anshul Gangwar" <anshul.gang...@citrix.com> >>>> wrote: >>>> >>>>> My comments inline.. >>>>> >>>>> On 14/01/13 22:52, Alex Huang wrote: >>>>>> Anshul, >>>>>> >>>>>> I had assumed that if you were doing this based on Murali's event >>>>>> framework, it would not be architected on an adapter in the alert >>>>>> manager but as a subscriber to his event framework. Has this been >>>>>> discussed? If so, why not subscribe to event framework? >>>>> Murali, >>>>> Can you reply for this. >>>> Alex, >>>> >>>> From what Anshul is proposing, I see that, requirements is to >> generate a >>>> SNMP trap for ALL of the alerts that CloudStack generates today, and >> there >>>> is no need for selectively subscribing to subset of alerts. Taking >>>> dependency on the event framework would mean that this feature will >>>> require a MOM broker for no additional benefit at least in this >> context of >>>> proposal. IMO, its seems good enough to just implement it as adapter >> to >>>> existing AlertManager and generate SNMP trap at source of alert >> generation. >>>>>> Also, I like to have the following asserted in the FS. >>>>>> >>>>>> - It is a separate project from CloudStack core >>>>> Alex, >>>>> >>>>> I am developing this feature as plugin, so it will be separate >> project >>>> >from CloudStack core >>>>>> - It only depends on cloud-utils and cloud-api jars for compile. >>>>> I am making it sure that code does not use any class from other >> jars >>>>> apart from cloud-utils and cloud-api jars. >>>>> >>>>> I will update the FS with this info >>>>> >>>>> >>>>>> Please confirm them. >>>>>> >>>>>> --Alex >>>>> Thanks, >>>>> Anshul >>>>>>> -----Original Message----- >>>>>>> From: Anshul Gangwar [mailto:anshul.gang...@citrix.com] >>>>>>> Sent: Friday, January 04, 2013 12:57 AM >>>>>>> To: cloudstack-dev@incubator.apache.org >>>>>>> Subject: Re: [Discuss] SNMP Alerts support in CloudStack >>>>>>> >>>>>>> I have created the initial draft of FS here >>>>>>> >> https://cwiki.apache.org/confluence/display/CLOUDSTACK/FS+for+Integrati >>>>>>> ng+CS+alerts+via+SNMP+to+external+management+system . I will >>>> keep >>>>>>> updating the FS based on comments and suggestions. >>>>>>> >>>>>>> Thanks, >>>>>>> Anshul >>>>>>> >>>>>>> On 02/01/13 12:21, Anshul Gangwar wrote: >>>>>>> >>>>>>> On 18/12/12 20:19, David Nalley wrote: >>>>>>> >>>>>>> >>>>>>> On Tue, Dec 18, 2012 at 6:12 AM, Anshul Gangwar >>>>>>> <anshul.gang...@citrix.com><mailto:anshul.gang...@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? >>>>>>> >>>>>>> >>>>>>> >>>>>>> - 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. >>>>>>> >>>>>>> >>>>>>> >>>>>>> - 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. >>>>>>> >>>>>>> >>>>>>> >>>>>>> Hi David, >>>>>>> Is there any OID which I can use to start development. >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> 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 >>>>>>> >>>>>>> >>>>>>> Thanks, >>>>>>> Anshul
