Bug 971571

Summary:	cinder appears to be leaking qpid exchanges
Product:	Red Hat OpenStack	Reporter:	Flavio Percoco <fpercoco>
Component:	openstack-cinder	Assignee:	Eric Harney <eharney>
Status:	CLOSED ERRATA	QA Contact:	Giulio Fidente <gfidente>
Severity:	high	Docs Contact:
Priority:	high
Version:	3.0	CC:	apevec, bperkins, breeler, dneary, dripton, eharney, ndipanov, ykaul
Target Milestone:	rc
Target Release:	3.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	openstack-cinder-2013.1.2-3.el6ost	Doc Type:	Bug Fix
Doc Text:	Previously, multiple qpid exchanges were created by Cinder but not removed if not required, leading to system out of memory errors. This has been fixed by appropriate configuration so that unnecessary qpid exchanges are removed.	Story Points:	---
Clone Of:	960539	Environment:
Last Closed:	2013-06-27 17:16:43 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Flavio Percoco 2013-06-06 20:19:17 UTC

+++ This bug was initially created as a clone of Bug #960539 +++

From RDO forum user bostrick: http://openstack.redhat.com/forum/discussion/85/is-nova-conductor-leaking-qpid-exchanges

Description of problem: After several hours of operation, there are a large number of qpid exchanges in existence, with a new one being created every ~10s.

To reproduce:
* Start OpenStack
* After a while, run qpid-stat -e lists open exchanges.

Actual results: Many exchanges reported.

Expected results: Few/no exchanges reported


Additional info:

qpid-printevents is displaying transactions similar to the following every 10 secs:

org.apache.qpid.broker:exchangeDeclare ... exName=d75b1d8f76ea46eead02b7480dd28cdf ...
org.apache.qpid.broker:queueDeclare ... qName=d75b1d8f76ea46eead02b7480dd28cdf ...
org.apache.qpid.broker:bind ... exName=d75b1d8f76ea46eead02b7480dd28cdf ...
org.apache.qpid.broker:subscribe ... qName=d75b1d8f76ea46eead02b7480dd28cdf ...
org.apache.qpid.broker:unsubscribe ...
org.apache.qpid.broker:queueDelete ... qName=d75b1d8f76ea46eead02b7480dd28cdf

notably missing is a complement to "exchangeDeclare" to clean it up.

tracing qpid client ports, nova-conductor seems to be the culprit.

--- Additional comment from David Ripton on 2013-06-06 16:12:52 EDT ---

Related upstream bugs:

https://bugs.launchpad.net/oslo/+bug/1033915
https://bugs.launchpad.net/nova/+bug/1178375

Comment 2 Eric Harney 2013-06-11 19:23:14 UTC

Worked around via setting in cinder-dist.conf.

Comment 4 Giulio Fidente 2013-06-13 11:38:52 UTC

verified using openstack-cinder-2013.1.2-3.el6ost.noarch

Comment 6 Bruce Reeler 2013-06-21 00:54:16 UTC

Edited Doc Text

Comment 8 errata-xmlrpc 2013-06-27 17:16:43 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-0968.html