[preview envirionments] run with cgroup v2

[kylos101]

Is your feature request related to a problem? Please describe

gen49 is switching to cgroup v2; preview environments should have parity with production.

Describe the behaviour you'd like

Upgrade preview environments to use cgroup v2.

Describe alternatives you've considered

n/a

Additional context

The image has been updated in other issues like so.

The latest image which supports cgroup v2 is internal. This uses K3s 1.24, and uses systemd as the cgroupDriver.

How to test

gitpod /workspace/template-python-flask (main) $ ls /sys/fs/cgroup/cgroup.controllers
ls: cannot access '/sys/fs/cgroup/cgroup.controllers': No such file or directory

The above file should exist (thanks, @Furisto !), but is what we currently get in preview environments.

[meysholdt]

reopening, because we needed to revert the PR here: #10989

reasons:

• https://gitpod.slack.com/archives/C032A46PWR0/p1656448245444129
• Update preview VM image #10987 (comment)

[ArthurSens]

Now that we reverted it, how do we proceed here? Could you point us to a new image that you'd like to have in preview environments @kylos101 ?

[kylos101]

Hey @ArthurSens , could you try a branch with this image, which is what we're using "now"? Also, is it possible to test that we can start workspaces using the image, prior to merging back to main?

cc: @aledbf

[ArthurSens]

Also, is it possible to test that we can start workspaces using the image, prior to merging back to main?

That is an interesting question, I believe I did test it... I tried opening workspaces and they started 🤔

Not sure how to tell if my tests were correct or not though. I'll try to hold the merge until someone from workspace team made the tests as well, is that ok?

[kylos101]

@ArthurSens adding you as an assignee on this because of the open PR. Is this okay? I'm not sure if this fits into your current week plan for Platform.

[ArthurSens]

@ArthurSens adding you as an assignee on this because of the open PR. Is this okay? I'm not sure if this fits into your current week plan for Platform.

Hi Kyle, unfortunately I don't plan to work on this issue this week. I think the way our teams are interacting on this one can definitely improve and the task is taking a lot longer than it should because of it 😬

I've spoken with @meysholdt in our last team sync, and I believe he'll set up a call so both teams can share knowledge about:

• Different ways to setup cgroupv2
• Different ways we can configure kernel parameters during boot of preview environments

After we're aligned about what needs to be done, I hope we can finally have some progress!