> Does this include other uses of gerrit replica? Should extension distributor 
> be switched to main gerrit?

Personally I think so, yes.  We can make a list of users and discuss
on https://phabricator.wikimedia.org/T336710
I also don't know yet which of the users is causing the highest load
compared to others.

On Mon, May 15, 2023 at 9:12 PM Brian Wolff <bawo...@gmail.com> wrote:
>
> Does this include other uses of gerrit replica? Should extension distributor 
> be switched to main gerrit?
>
> --
> Brian
>
> On Tuesday, May 16, 2023, Daniel Zahn <dz...@wikimedia.org> wrote:
>>
>> > This means codesearch will be affected (and won't get updated) and 
>> > possibly even will be down during that time.
>>
>> We, at least in my team, would like to switch codesearch (and other
>> clients) back to just use gerrit.wikimedia.org and not the replica
>> directly.
>>
>> Just today we agreed to make a new ticket for specifically this,
>> because soon we have to reimage the replica to bullseye and add more
>> downtime.
>>
>> The reason we did the split in the past was to reduce load on the main
>> gerrit server but meanwhile first the issue has been fixed in newer
>> Gerrit
>> versions and then also just a few days ago we switched to brand new hardware.
>>
>> So now if anything it should be beefier than before and even without
>> that it seemed already a thing of the past.
>>
>> And we pay for this with this issue that the replica becomes a second
>> production system, with the need for downtimes. It complicates
>> fail-over scenarios
>> too and in a way means there is never a passive host when we do DC 
>> switch-over.
>>
>> So yea, I suggest we change the config of codesearch now to use the
>> main gerrit unless you have concerns about that.
>>
>> On Mon, May 15, 2023 at 1:18 PM Amir Sarabadani <ladsgr...@gmail.com> wrote:
>> >
>> > This means codesearch will be affected (and won't get updated) and 
>> > possibly even will be down during that time.
>> >
>> > Best
>> >
>> > Am Mo., 15. Mai 2023 um 22:03 Uhr schrieb Tyler Cipriani 
>> > <tcipri...@wikimedia.org>:
>> >>
>> >> Hello
>> >>
>> >> The read-only Gerrit replica[0] will be down for 30 minutes tomorrow 
>> >> (Tue, 16 May 2023) between 13:00–15:00 UTC[1] due to network switch 
>> >> upgrades in codfw row D[2].
>> >>
>> >> During this window, git reads from the replica will not work.
>> >>
>> >> To my knowledge, this affects bots which rely on the replica for git read 
>> >> operations.
>> >>
>> >> Apologies for any inconvenience.
>> >>
>> >> Tyler Cipriani (he/him)
>> >> Engineering Manager, Release Engineering
>> >> Wikimedia Foundation
>> >>
>> >> [0]: <https://wikitech.wikimedia.org/wiki/Gerrit/Replica>
>> >> [1]: <https://zonestamp.toolforge.org/1684242019>
>> >> [2]: <https://phabricator.wikimedia.org/T335042>
>> >> _______________________________________________
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>> >
>> >
>> >
>> > --
>> > Amir (he/him)
>> >
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>>
>>
>>
>> --
>> Daniel Zahn <dz...@wikimedia.org>
>> Site Reliability Engineer
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-- 
Daniel Zahn <dz...@wikimedia.org>
Site Reliability Engineer
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