Use cncf-hosted gha runners

[jeefy]

Description

CNCF has hosted ephemeral GitHub runners in Oracle that we're wanting projects to use rather than the GitHub hosted ones, which are now incur a cost to use. ~This PR is currently a WIP to work through any tests that break or dependencies that may be missing.~ <3

Please direct any questions to myself, @krook and @RobertKielty

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[jeefy]

Yup! However there is a difference between the GitHub hosted and the CNCF hosted runners.

Our runners are running in containers. The GitHub hosted ones run in VMs. There can be dependency drift and unforeseen issues we'll have to work through. Should be fun though 🙂

On Mon, Mar 17, 2025, 14:37 Andrey Velichkevich @.***> wrote:

@.**** commented on this pull request.

This is great that we have access to the Oracle runners 🎉 Thank you for this @jeefy https://github.com/jeefy! Should we update this issue and update other repos (e.g. mpi-operator): kubeflow/community#829 https://github.com/kubeflow/community/issues/829 ? cc @kubeflow/wg-training-leads https://github.com/orgs/kubeflow/teams/wg-training-leads @kubeflow/kubeflow-steering-committee https://github.com/orgs/kubeflow/teams/kubeflow-steering-committee

— Reply to this email directly, view it on GitHub https://github.com/kubeflow/trainer/pull/2538#pullrequestreview-2691780096, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAKUO6CVJGEAHADFEVQS2HD2U4P67AVCNFSM6AAAAABZGDQZDGVHI2DSMVQWIX3LMV43YUDVNRWFEZLROVSXG5CSMV3GSZLXHMZDMOJRG44DAMBZGY . You are receiving this because you were mentioned.Message ID: @.***>

[tenzen-y]

If we move all CI jobs to CNCF hosted runner, we need to create DinD container images so that we can perform Kind cluster during CI.

[juliusvonkohout]

If we move all CI jobs to CNCF hosted runner, we need to create DinD container images so that we can perform Kind cluster during CI.

If i understand this correctly, it is only for the more expensive larger GHA runners, not the default ones provided by GitHub. So we only need to migrate workflows that benefit from larger runners or VMs.

[tenzen-y]

If we move all CI jobs to CNCF hosted runner, we need to create DinD container images so that we can perform Kind cluster during CI.

If i understand this correctly, it is only for the more expensive larger GHA runners, not the default ones provided by GitHub. So we only need to migrate workflows that benefit from larger runners or VMs.

Yes, your understanding is correct. I indicated Trainer E2E, mostly.

[jeefy]

If we move all CI jobs to CNCF hosted runner, we need to create DinD container images so that we can perform Kind cluster during CI.

DIND is already baked into the current setup. You can do docker builds (and some other jobs already are)

Need to debug why your e2e/kind cluster didn't spin up though.

[tenzen-y]

If we move all CI jobs to CNCF hosted runner, we need to create DinD container images so that we can perform Kind cluster during CI.

DIND is already baked into the current setup. You can do docker builds (and some other jobs already are)

Need to debug why your e2e/kind cluster didn't spin up though.

Oh, I didn't know that. Thank you for letting us know

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