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Wikimedia Cloud Services team/EnhancementProposals/Decision record T363683 kubernetes upgrade workgroup

From Wikitech

Origin task: phab:T363683

Date of the decision: 2024-06-06

People in the decision meeting (alphabetical order): There was no meeting, decided in the task


Decision taken

Option 2 was chosen with some comments:

  • Create an overview wiki page for the coming upgrades


Starting workgroup members (alphabetical order)

Rationale

We want to catch up with the k8s versions specially as we can't jump versions yet, so we have to put in the effort to speed up until we get there, and to stay there once we catch up.

Problem

We are several years behind kubernetes upgrades, and in order to catch up, we need to upgrade faster than upstream releases for some time.

Constraints and risks

  • All the problems of running old software (security, bugs, stability, ...)

Extra info

Decision record

In progress

https://wikitech.wikimedia.org/wiki/Wikimedia_Cloud_Services_team/EnhancementProposals/Decision_record_T302593_How_do_we_make_decisions

Options

Option 1

Do nothing

Pros:

  • No extra effort needed

Cons:

  • We never catch up


Option 2

Create a dedicated opt-in workgroup to focus on monthly Kubernetes upgrades until we catch up (as aim, some upgrades might take more), and continue with regular updates thereafter.

Pros:

  • K8s upgrade progress greatly improves
  • we spread upgrade knowledge in the team
  • we setup a working group that can then take over the regular updates (3/year)
  • automation improvement and refinement

Cons:

  • Considerable effort sometimes when api deprecations happen to affect us
  • Are monthly updates compatible with other work streams?
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