After discussion with ceilometer team, the decision was to use another topic for notifications specific to searchlight.
Here's the IRC meeting transcirpt:
<gordc> #topic Open discussion
* openstack has changed the topic to: Open discussion (Meeting topic: ceilometer)
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<gordc> does anyone have oslo.messaging 1.16.x + devstack installed?
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<gordc> just for reference, https://bugs.launchpad.net/ceilometer/+bug/1475307
<openstack> Launchpad bug 1475307 in Ceilometer "collector has possible memory leak" [Critical,New]
<lakshmiS> Have a question for ceilometer team. I am core commiter on Openstack searchlight project and we consume notifications from glance but when ceilometer is running, searchlight listener doesn't recieve those notifications.
<lakshmiS> We have to stop ceilometer for searchlight to receive new notifications. Searchlight project has a patchset to include a pool name: https://review.openstack.org/#/c/202392/
<lakshmiS> Can ceilometer do similarly or any other suggestions?
<eglynn> lakshmiS: you need to configure glance to emit on two topics IIRC
<gordc> lakshmiS: ^
<cdent> eglynn: that seems unfair
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<eglynn> cdent: life is unfair :)
<lakshmiS> can we not use different pool names: atleast that's what the oslo messaging document says
<cdent> you're basically putting a dependency on a source for their to be multiple listeners
<cdent> s/their/there/
<cdent> whereas what we'd like in a distributed system is for there to be N potential listeners without needing to change the source
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<gordc> lakshmiS: there was an issue with that oslo.messaging
* cdent looks at sileht
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<lakshmiS> cdent: +1
<sileht> that should just work
<eglynn> cdent: yeap, it's certainly not pretty, I just think that's the current reality
* cdent does not aspire to reality ;)
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<eglynn> sileht: a-ha, k ... good to know
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<lakshmiS> I tried changing ceilometer listener code to have a pool name but it stops working afer a while
<lakshmiS> is there anyone from ceilometer team I can discuss this offline?
<gordc> sileht: wasn't there an issue with pools, something about it not being created at right time so we'd lose messages?
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<sileht> kmartin,you need to take a look to your rabbitmq queues and find those prefixed with searchlight-listener
<gordc> lakshmiS: we're all over at #openstack-ceilometer (more euro based) but there's a few of us (me) in americas tz
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<lakshmiS> gordc: sileht: can you point me to the issue you had previously with oslo.messaging pools?
<sileht> gordc, yes but you just lost message between the client side restart and the first server side start, that doesn't occurs offen
<sileht> lakshmiS, it not a issue, this is a historical behavior :p
<lakshmiS> ok
<sileht> unsure it's cleanly documented
<lakshmiS> so the solution/alternative is to have multiple topics for notification.info from glance?
<gordc> lakshmiS: post your issue over at #openstack-ceilometer and someone will reply. if not, we're sleeping and ML is good.
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<lakshmiS> gordc: i wil do ML since I already did on IRC with no response
<gordc> lakshmiS: that is the alternative yes... that's typically what is done. (ie. stacktach)
<lakshmiS> gordc: thx
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<gordc> sileht: for the above, do ceilometer and searchlight need to create pool or just one? the problem right is we're both using hte same default pool right?
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<sileht> gordc, I think the safer ways is to emit the notification twice on the other side
<lakshmiS> sileht: that would be a change on each team(glance, nova) etc right?
<sileht> lakshmiS, yes a configuration change
<sileht> gordc, this method ensure that no notifications will be missed
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<gordc> sileht: got it. that's what i understood.
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<lakshmiS> sileht: do you have any previous reviews doint this cofig change ?
<lakshmiS> s/doint/doing
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<gordc> lakshmiS: its either or i guess. pro/con either way.
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<gordc> lakshmiS: let me dig up stacktach docs, they might reference it
<lakshmiS> thanks gordc:
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<gordc> anything other topics?
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<gordc> lakshmiS: i'll send you link over in openstack-ceilometer unless you have another preference
<gordc> 30s countdown
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<lakshmiS> gordc: please send it to <email address hidden> if possbile too
<gordc> lakshmiS: kk
<gordc> ending meeting. thanks folks
<gordc> #endmeeting
* openstack has changed the topic to: OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings
<openstack> Meeting ended Thu Jul 16 15:55:28 2015 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)
<openstack> Minutes: http://eavesdrop.openstack.org/meetings/ceilometer/2015/ceilometer.2015-07-16-15.00.html
<openstack> Minutes (text): http://eavesdrop.openstack.org/meetings/ceilometer/2015/ceilometer.2015-07-16-15.00.txt
<openstack> Log: http://eavesdrop.openstack.org/meetings/ceilometer/2015/ceilometer.2015-07-16-15.00.log.html
After discussion with ceilometer team, the decision was to use another topic for notifications specific to searchlight.
Here's the IRC meeting transcirpt: 72.163. 220.5) has joined /bugs.launchpad .net/ceilometer /+bug/1475307 /review. openstack. org/#/c/ 202392/ 68.152. broadband9. iol.cz) has joined 72.32.115. 231) has joined 2001:420: c0e0:1005: :2eb) has joined listener ceilometer (more euro based) but there's a few of us (me) in americas tz 144.49. 132.22) has joined 211.219. 170.176) has joined alternative is to have multiple topics for notification.info from glance? ceilometer and someone will reply. if not, we're sleeping and ML is good. 61-222- 64-29.HINET- IP.hinet. net) has joined 50.56.228. 68) has joined mediawiki/ hashar) has joined 50.56.229. 9) has joined 50.57.17. 244) has joined ceilometer unless you have another preference /wiki.openstack .org/wiki/ Meetings wiki.debian. org/MeetBot . (v 0.1.4) eavesdrop. openstack. org/meetings/ ceilometer/ 2015/ceilometer .2015-07- 16-15.00. html eavesdrop. openstack. org/meetings/ ceilometer/ 2015/ceilometer .2015-07- 16-15.00. txt eavesdrop. openstack. org/meetings/ ceilometer/ 2015/ceilometer .2015-07- 16-15.00. log.html
<gordc> #topic Open discussion
* openstack has changed the topic to: Open discussion (Meeting topic: ceilometer)
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<gordc> does anyone have oslo.messaging 1.16.x + devstack installed?
* ganeshna (~ganeshna@
* dprince has quit (Ping timeout: 256 seconds)
<gordc> just for reference, https:/
<openstack> Launchpad bug 1475307 in Ceilometer "collector has possible memory leak" [Critical,New]
<lakshmiS> Have a question for ceilometer team. I am core commiter on Openstack searchlight project and we consume notifications from glance but when ceilometer is running, searchlight listener doesn't recieve those notifications.
<lakshmiS> We have to stop ceilometer for searchlight to receive new notifications. Searchlight project has a patchset to include a pool name: https:/
<lakshmiS> Can ceilometer do similarly or any other suggestions?
<eglynn> lakshmiS: you need to configure glance to emit on two topics IIRC
<gordc> lakshmiS: ^
<cdent> eglynn: that seems unfair
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* ganeshna has quit (Read error: Connection reset by peer)
<eglynn> cdent: life is unfair :)
<lakshmiS> can we not use different pool names: atleast that's what the oslo messaging document says
<cdent> you're basically putting a dependency on a source for their to be multiple listeners
<cdent> s/their/there/
<cdent> whereas what we'd like in a distributed system is for there to be N potential listeners without needing to change the source
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<gordc> lakshmiS: there was an issue with that oslo.messaging
* cdent looks at sileht
* afazekas (~turul@
* pm90_ has quit (Read error: Connection reset by peer)
<lakshmiS> cdent: +1
<sileht> that should just work
<eglynn> cdent: yeap, it's certainly not pretty, I just think that's the current reality
* cdent does not aspire to reality ;)
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<eglynn> sileht: a-ha, k ... good to know
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<lakshmiS> I tried changing ceilometer listener code to have a pool name but it stops working afer a while
<lakshmiS> is there anyone from ceilometer team I can discuss this offline?
<gordc> sileht: wasn't there an issue with pools, something about it not being created at right time so we'd lose messages?
* jorge_munoz (~jorge@
* ganeshna (~ganeshna@
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<sileht> kmartin,you need to take a look to your rabbitmq queues and find those prefixed with searchlight-
<gordc> lakshmiS: we're all over at #openstack-
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* vishwanathj (~vishwanat@
* ujuc (~ujuc@
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<lakshmiS> gordc: sileht: can you point me to the issue you had previously with oslo.messaging pools?
<sileht> gordc, yes but you just lost message between the client side restart and the first server side start, that doesn't occurs offen
<sileht> lakshmiS, it not a issue, this is a historical behavior :p
<lakshmiS> ok
<sileht> unsure it's cleanly documented
<lakshmiS> so the solution/
<gordc> lakshmiS: post your issue over at #openstack-
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<lakshmiS> gordc: i wil do ML since I already did on IRC with no response
<gordc> lakshmiS: that is the alternative yes... that's typically what is done. (ie. stacktach)
<lakshmiS> gordc: thx
* arvinchou_1 (~Adium@
<gordc> sileht: for the above, do ceilometer and searchlight need to create pool or just one? the problem right is we're both using hte same default pool right?
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<sileht> gordc, I think the safer ways is to emit the notification twice on the other side
<lakshmiS> sileht: that would be a change on each team(glance, nova) etc right?
<sileht> lakshmiS, yes a configuration change
<sileht> gordc, this method ensure that no notifications will be missed
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<gordc> sileht: got it. that's what i understood.
* PrashantS (~PerfBeing@
<lakshmiS> sileht: do you have any previous reviews doint this cofig change ?
<lakshmiS> s/doint/doing
* hashar_ (~sempitern@
<gordc> lakshmiS: its either or i guess. pro/con either way.
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<gordc> lakshmiS: let me dig up stacktach docs, they might reference it
<lakshmiS> thanks gordc:
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<gordc> anything other topics?
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<gordc> lakshmiS: i'll send you link over in openstack-
<gordc> 30s countdown
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<lakshmiS> gordc: please send it to <email address hidden> if possbile too
<gordc> lakshmiS: kk
<gordc> ending meeting. thanks folks
<gordc> #endmeeting
* openstack has changed the topic to: OpenStack Meetings || https:/
<openstack> Meeting ended Thu Jul 16 15:55:28 2015 UTC. Information about MeetBot at http://
<openstack> Minutes: http://
<openstack> Minutes (text): http://
<openstack> Log: http://