Bug 1040599 - [RFE][nova]: Send as much DB traffic as possible from periodic tasks to DB slaves
Summary: [RFE][nova]: Send as much DB traffic as possible from periodic tasks to DB sl...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-nova
Version: unspecified
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: Upstream M3
: 5.0 (RHEL 7)
Assignee: Nikola Dipanov
QA Contact: Ami Jeain
URL: https://blueprints.launchpad.net/nova...
Whiteboard: upstream_milestone_icehouse-3 upstrea...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-12-11 16:53 UTC by RHOS Integration
Modified: 2019-09-09 17:01 UTC (History)
7 users (show)

Fixed In Version: openstack-nova-2014.1-3.el7ost
Doc Type: Enhancement
Doc Text:
With this update, a Compute deployment which has a configured database slave (slave_connection) can send reads from periodic tasks to this slave. Periodic tasks typically result in consistently high loads to deployments. To improve performance, these tasks can now be offloaded to database slaves.
Clone Of:
Environment:
Last Closed: 2014-07-08 15:26:42 UTC
Target Upstream Version:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2014:0853 0 normal SHIPPED_LIVE Red Hat Enterprise Linux OpenStack Platform Enhancement - Compute 2014-07-08 19:22:38 UTC

Description RHOS Integration 2013-12-11 16:53:07 UTC 
Cloned from launchpad blueprint https://blueprints.launchpad.net/nova/+spec/periodic-tasks-to-db-slave.

Description:

Periodic tasks are some of the most consistent load that any deployment will experience. As such, and because of the nature of most periodic tasks, their reads are prime targets for DB slaves. 

Specification URL (additional information):

None
Comment 1 David Ripton 2014-02-26 21:28:41 UTC 
Still targeted at icehouse upstream, but not a release blocker.  Looks like there's a good chance it'll make icehouse, but it might miss and go in juno instead.

There are 7 merged patches, 1 still under review, all by Michael H. Wilson.
Comment 3 Ami Jeain 2014-06-10 14:14:14 UTC 
verified through nova regression:
#  rpm -qa |grep openstack-nova
openstack-nova-console-2014.1-3.el7ost.noarch
openstack-nova-novncproxy-2014.1-3.el7ost.noarch
openstack-nova-api-2014.1-3.el7ost.noarch
openstack-nova-common-2014.1-3.el7ost.noarch
openstack-nova-conductor-2014.1-3.el7ost.noarch
openstack-nova-cert-2014.1-3.el7ost.noarch
openstack-nova-scheduler-2014.1-3.el7ost.noarch

and

# rpm -qa |grep openstack-nova
openstack-nova-compute-2014.1-3.el7ost.noarch
openstack-nova-common-2014.1-3.el7ost.noarch
Comment 6 errata-xmlrpc 2014-07-08 15:26:42 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/RHEA-2014-0853.html
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