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Is this something like Firecracker ?

It runs on top of https://github.com/containers/libkrun. Similar to Firecracker but seems specifically targeted to making microVMs out of OCI containers (via CLI) as opposed to Firecracker which uses a downloaded kernel and rootfs and is managed via API ala https://github.com/firecracker-microvm/firecracker/blob/main....

But I'm no expert, just my armchair take on things.

If it is OCI compatible, it technically means you could use kubernetes or another container orchestrator to orchestrate these microvms. I wonder krunvm already works with kubernetes.

If I'm understanding correctly, it's OCI compatible in the other direction - it consumes OCI compatible images, but it doesn't expose an OCI compatible layer on top for orchestration.

kube-virt[1] is a thing, though, that provides k8s orchestration for VMs. I don't see why you couldn't use krunvm microvms with that

[1] https://github.com/kubevirt/kubevirt

Probably more like `weaveworks/ignite`, which creates firecracker microvms from OCI images

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