[ovs-discuss] OVN at scale in production

[Numan Siddique]

On Wed, Oct 6, 2021 at 12:15 PM Seena Fallah <seenafallah at gmail.com> wrote:
>
> Hi,
>
> I use ovn for OpenStack neutron plugin for my production. After days I see issues about losing a leader in ovsdb. It seems it was because of the failing inactivity probe and because I had 17k acls. After I disable the inactivity probe it works fine but when I did a scale test on it (about 40k ACLS) again it fails the leader.
> I saw many docs about ovn at scale issues that were raised by both RedHat and eBay and seems the solution is to rewrite ovn with ddlog. I checked it with northd-ddlog but nothing changes.
>
> My question is should I wait more for ovn to be stable for high scale or is there any tuning I miss in my deployment?
> Also, will the ovn-nb/sb rewrite with ddlog and can help the issues at a high scale? if yes is there any due time?

What is the ovsdb-server version you're using ?  There are many
improvements in the ovsdb-server in 2.16.
Maybe that would help in your deployment.  And also there were many
improvements which went into OVN 21.09
if you want to test it out.

Thanks
Numan

>
> Thanks.
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