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digitalocean / DOKS

Managed Kubernetes designed for simple and cost effective container orchestration.
https://www.digitalocean.com/products/kubernetes/
Apache License 2.0
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Linux Kernel 5.x on DOKS Nodes #29

Closed artem-zinnatullin closed 2 years ago

artem-zinnatullin commented 2 years ago

We intend to deploy an application that uses io_uring API of Linux Kernel on DigitalOcean Kubernetes Service .

The API was added to the Linux Kernel 5.1, released on May 5th 2019.

But it turns out DOKS Nodes are running on Linux 4.19.0-17 thus making io_uring unavailable for k8s containers.

Is there a planned date on upgrading DOKS nodes to Linux Kernel 5.x? Thanks

timoreimann commented 2 years ago

Hey @artem-zinnatullin 👋

Upgrading the kernel to 5.x is in the making. I can't speak to specific timelines, but it shouldn't take terribly long anymore until a newer kernel version becomes available.

Stay tuned!

artem-zinnatullin commented 2 years ago

Oh that's good to hear, I love the service and would like to use DigitalOcean for the project, but io_uring is a blocker for us, hopefully our release timeline matches yours and we'll be able to deploy on DOKS 😬

bergkvist commented 2 years ago

Any updates on this? I want to use the "Egress Gateway" feature in Cilium, which requires kernel version >= 5.2 https://docs.cilium.io/en/stable/gettingstarted/egress-gateway/

timoreimann commented 2 years ago

We just realized DOKS 1.22 which comes with kernel 5.10. See also our release notes.

@bergkvist please be aware that we consider the Cilium configuration to be part of the managed offering, so changes you may do to it can be overwritten by our backend systems.

Additionally, the egress gateway feature in Cilium was still somewhat buggy when we tested it in 1.10. I think a few improvements went into Cilium 1.11, but we do not support that yet in DOKS.