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refactor: run kubelet and etcd in system containerd #9829

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@dsseng dsseng commented Nov 28, 2024

This change allows us to ensure their contexts are protected by SELinux policy, as well as making CRI containerd only host containers managed by Kubernetes.

Signed-off-by: Dmitry Sharshakov [email protected]

This change allows us to ensure their contexts are protected by SELinux policy, as well as making CRI containerd only host containers managed by Kubernetes.

Signed-off-by: Dmitry Sharshakov <[email protected]>
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smira commented Nov 28, 2024

I'm not sure if we can do that, as system containerd runs from tmpfs, so all container state and images should be in memory.

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dsseng commented Nov 28, 2024

Well, etcd data is on a mount to where it belongs to be

@frezbo
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frezbo commented Nov 28, 2024

Well, etcd data is on a mount to where it belongs to be

but the uncompressed layers and other metadata will fillup tmpfs, just wasting memory

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dsseng commented Nov 28, 2024

yes, perhaps this solution is not really efficient since those images aren't tiny

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dsseng commented Dec 16, 2024

Idea: we could create a namespace belonging to the system containerd, but with snapshotter configured to store data on the /var partition? This should bring together best of both concepts.

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smira commented Dec 17, 2024

Idea: we could create a namespace belonging to the system containerd, but with snapshotter configured to store data on the /var partition? This should bring together best of both concepts.

that sounds interesting, if we can actually pull it through, but still it's kubelet/etcd only

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