Migrate Wikitech to Kubernetes
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	jijiki
	Oct 7 2021, 11:00 AM

Description

As part of our goal to start pushing mediawiki production traffic to kubernetes T290536, it appears that Wikitech hit the jackpot. This comes with some challenges:

php-ldap module: since we do not want to have this module installed on our mediawiki images, we can piggyback it in our -debug image. This image has tideways installed, but latency won't be a big issue, we'll take the hit.
apache config: wikitech has a different apache config, we need to migrate it.
offline backups: wikitech is being mirrored to wikitech-static

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Status	Assigned	Task
		· · ·
Open	None	T290536 Serve production traffic via Kubernetes
Open	None	T363125 sustainability of wikitech.wikimedia.org
Open	None	T237773 Move Wikitech onto the production MW cluster
Open	jijiki	T292707 Migrate Wikitech to Kubernetes
		· · ·

Event Timeline

jijiki created this task.Oct 7 2021, 11:00 AM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptOct 7 2021, 11:00 AM

jijiki mentioned this in T290536: Serve production traffic via Kubernetes.Oct 7 2021, 11:04 AM

jijiki renamed this task from Move Wikitech to Kubernetes to Migrate Wikitech to Kubernetes.Oct 7 2021, 11:10 AM

jijiki triaged this task as Medium priority.

jijiki added projects: serviceops, MW-on-K8s.

jijiki updated the task description. (Show Details)

jijiki added a parent task: T290536: Serve production traffic via Kubernetes.

taavi added a project: wikitech.wikimedia.org.Oct 7 2021, 11:12 AM

taavi subscribed.

• Marostegui subscribed.Nov 26 2021, 10:55 AM

Ladsgroup subscribed.Nov 26 2021, 10:58 AM

Krinkle updated the task description. (Show Details)Nov 26 2021, 12:02 PM

LSobanski subscribed.Nov 26 2021, 1:12 PM

bd808 added a parent task: T237773: Move Wikitech onto the production MW cluster.Nov 28 2021, 4:32 PM

bd808 subscribed.

MoritzMuehlenhoff subscribed.Nov 29 2021, 9:03 AM

bd808 moved this task from Backlog to Snowflakes on the wikitech.wikimedia.org board.Apr 4 2022, 9:30 PM

jijiki moved this task from Incoming 🐫 to 🙈🙉🙊Backlog on the serviceops board.Sep 28 2022, 2:20 PM

jijiki moved this task from 🙈🙉🙊Backlog to 🌻Mediawiki on the serviceops board.Nov 9 2022, 2:16 PM

Any ETA on when this could happen?

We will soon be in next quarter OKR/planning season, we 'll post an update then if we manage to schedule it for next quarter. Just so that we have all data that we need to make the decision, is this a blocker for Data Persistence in any way?

It is not a blocker for us per se, but we got hit again: https://phabricator.wikimedia.org/T237773#8930311

In T292707#8930381, @Marostegui wrote:

It is not a blocker for us per se, but we got hit again: https://phabricator.wikimedia.org/T237773#8930311

Cool, noted. Thanks for the info.

To expand upon what Manuel said, we have to manually special-case wikitech in a lot of places which is a lot of work and when we forget to, it usually end up as an incident/outage/major issues making wikitech unusable. This has happened multiple times.

On top of that since wikitech appserver is in public network, we have to open holes in our firewall and add extra grants and that's making me uneasy.

Clement_Goubert updated the task description. (Show Details)Jun 19 2023, 10:19 AM

bd808 mentioned this in T341470: UrlShortener throws DBConnectionError exception on wikitech.Jul 10 2023, 6:03 PM

bd808 mentioned this in T237889: Install php-ldap on all MW appservers.Aug 1 2023, 5:32 PM

bd808 mentioned this in T237773: Move Wikitech onto the production MW cluster.

bd808 mentioned this in T174476: Support video on wikitech wiki.Nov 1 2023, 3:57 PM

jijiki claimed this task.Thu, Apr 11, 12:36 PM

Clement_Goubert mentioned this in T362323: Move 100% of external traffic to Kubernetes (excluding Votewiki and Commons).Thu, Apr 11, 12:46 PM

Andrew added a parent task: T363125: sustainability of wikitech.wikimedia.org.Tue, Apr 23, 3:56 AM