Support for Ubuntu 24.04 LTS

[cloudmaniac]

Ubuntu 24.04 LTS (Noble Numbat) is planned for April 25, 2024. We would like to get the support for a new core image based on this new version as some customers will require it.

A similar feature request was created to support Ubuntu 22.04. Based on this comment

Test the following releases

• Ubuntu 24.04 arm64 generic #2241
• Add ubuntu 24.04 arm generic #2480

Artifacts and Cleanup

• Add Ubuntu 24.04 to pipelines #2447

[mauromorales]

@mudler @cloudmaniac What does that mean for our other LTS releases? Do we support them all the way till their EOL dates? In the case of 20.04 this is 2030 for example. Or do we plan to roll the versions and only keep a certain number of LTSs? e.g. stop building 20.04 artifacts as soon as 24.04 is released

[mudler]

@mudler @cloudmaniac What does that mean for our other LTS releases? Do we support them all the way till their EOL dates? In the case of 20.04 this is 2030 for example. Or do we plan to roll the versions and only keep a certain number of LTSs? e.g. stop building 20.04 artifacts as soon as 24.04 is released

It would make sense to me to just keep LTSes until their end of standard support for now (not EOL) - all the rest can be cut off (intermediary releases, latest). But I'd like to hear what @cloudmaniac 's thoughts are on it.

https://wiki.ubuntu.com/Releases for reference

[mauromorales]

Blocks RPi #2249

[cloudmaniac]

It would make sense to me to just keep LTSes until their end of standard support for now (not EOL) - all the rest can be cut off (intermediary releases, latest). But I'd like to hear what @cloudmaniac 's thoughts are on it.

I didn't forgot about that question: I agree with that statement @mudler but I'm still checking internally as I may not have the final word on this. 😅

[mauromorales]

btw @cloudmaniac with current master of Kairos, you should be able to build 24.04 for amd64, feel free to test it out and let me know if you find any issues. We are not yet producing artifacts ourselves, but this way you can already find out if there's any requirements that aren't met by the base image.

[mauromorales]

Regarding the artifact cleanup, the EOL for 23.10 is July 24, I think we should move that into an independent ticket because we might even have to delay that a bit to avoid braking the flow of anyone depending on this version. But if we do so, we must be very clear that the version is not supported so security wise is a bad idea

https://ubuntu.com/about/release-cycle

[mauromorales]

Ubuntu 24.04 support has been added for amd64 and arm64 generic. RPi will depend on upstream or if we find an alternative solution. I've created the following cards as followups

• chore: Remove Ubuntu 23.10  #2481
• Make Ubuntu 24.04 official on docs #2482