Support loading images into K3s

[imjasonh]

Similar to how we load images into KinD with KO_DOCKER_REPO=kind.local, we should support loading images into Rancher Desktop / k3s, which uses containerd.

https://cwienczek.com/2020/06/import-images-to-k3s-without-docker-registry/ indicates that you can run:

sudo k3s ctr images import /home/ubuntu/test-app-v1.0.0.tar

The Slack user Romāns Potašovs who originally asked about this feature says you can also:

docker save my_app:latest | ctr -a /run/k3s/containerd/containerd.sock -n=k8s.io images import -

In which case, this should be fairly straightforward, either by piping that output into an exec.Command, or by figuring out what library we'd need to import to accomplish the same thing. Shelling out might be better for our dependency graph (same for KinD, honestly).

This needs more investigation. If you have experience with k3s, and are interested in helping here, let me know.

[kameshsampath]

@imjasonh - #665 has raw implementation for it, seem to work for both rancher-desktop and vanilla lima-vm.

Got some TODOs added to it, happy to work on them when you feel if the approach looks OK.

Sadly there are no mocks for lima-vm( may be I dont know ;)) so test cases are kind of missing.

[github-actions]

This issue is stale because it has been open for 90 days with no
activity. It will automatically close after 30 more days of
inactivity. Keep fresh with the 'lifecycle/frozen' label.

[imjasonh]

I still think this is worth doing, and #665 seems pretty close to being ready. Keeping this open in the meantime.

[kameshsampath]

rdctl is released now, let me check if I can hook it to e2e cases. Thanks for keeping it open

…

On 20 Jul 2022, 6:38 PM +0530, Jason Hall ***@***.***>, wrote: I still think this is worth doing, and #665 seems pretty close to being ready. Keeping this open in the meantime. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>