Bug 1982752 - [OVN] Enable ovn-monitor-all to help with OVN scale
Summary: [OVN] Enable ovn-monitor-all to help with OVN scale
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: puppet-ovn
Version: 16.2 (Train)
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: z2
: 16.2 (Train on RHEL 8.4)
Assignee: OSP Team
QA Contact: Udi Shkalim
URL:
Whiteboard:
Depends On:
Blocks: 2037940
TreeView+ depends on / blocked
 
Reported: 2021-07-15 15:41 UTC by Lucas Alvares Gomes
Modified: 2022-03-23 22:11 UTC (History)
2 users (show)

Fixed In Version: puppet-ovn-15.5.0-2.20211118004950.5ea0ae2.el8ost
Doc Type: No Doc Update
Doc Text:
Clone Of:
: 2037940 (view as bug list)
Environment:
Last Closed: 2022-03-23 22:10:49 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
OpenStack gerrit 801455 0 None MERGED Add ovn-monitor-all option to ovn-controller 2023-05-31 09:10:00 UTC
OpenStack gerrit 801459 0 None MERGED Enable ovn-monitor-all option to ovn-controller 2023-05-31 09:10:04 UTC
Red Hat Issue Tracker OSP-6260 0 None None None 2021-11-15 13:07:40 UTC
Red Hat Product Errata RHBA-2022:1001 0 None None None 2022-03-23 22:11:20 UTC

Internal Links: 2017906

Description Lucas Alvares Gomes 2021-07-15 15:41:14 UTC 
With conditional monitoring enabled the OVN databases (OVSDBs) have to do a lot of extra work when sending update to the clients connected to it. On a deployment such as the PSI with many clients connecting to the OVN databses this problem was very apparent.

The OVSDBs support an option called "ovn-monitor-all" that can be set to help relieving this problem as it makes the conditional monitoring be processed at the client side instead of the server side.

This BZ is suggesting that we set this option to True by default in the OSP environments as this clearly helped with the scalability of OVN. Both PSI as well as OCP relies on this option so it should be safe.

Puppet-ovn should add support for setting this option on every chassis:

$ ovs-vsctl set open . external_ids:ovn-monitor-all=true
Comment 12 errata-xmlrpc 2022-03-23 22:10:49 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 (Release of components for Red Hat OpenStack Platform 16.2.2), and where to find the updated
files, follow the link below.

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

https://access.redhat.com/errata/RHBA-2022:1001
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