[Feature] Add latest OS versions to guest OS list

[la-wu]

The required feature described as a wish

As an MSP switching from vmware to cloudstack at the moment we would love to see the latest Linux versions within the Guest OS list by default. Currently Alma/Rocky etc. are on version 9, debian latest is 12, ubuntu latest is 24. All of them have one newer Major version not sure about other distributions.

I know we can add all these manual. But would be nice to have them in the default to have no issues wit future cloudstack updates.

[github-actions[bot]]

🎯 Triage report

Feature request to expand the default Guest OS list with newer major versions of common Linux distributions (AlmaLinux/Rocky 10, Debian 13, Ubuntu newer LTS, etc.) so admins don't need to add them manually after each release.

📊 Assessment

Dimension	Value	Reasoning
Type	type:new-feature	Requests new default data (guest OS mappings), not a bug fix
Component	none	Affects the guest OS type list, which spans management-server config data rather than a single clearly identifiable component
Severity	n/a	Not a bug
Labels	type:new-feature	See above
Coding agent	Needs more info	The general idea is clear, but a concrete PR would require enumerating exact distro/version/hypervisor guest-OS-mapping entries to add (per hypervisor: KVM, VMware, XenServer), which isn't specified here

🔗 Similar issues

• Support Debian 13 (trixie) #12374 (related) — explicit request to add Debian 13 (trixie) support to the guest OS list, a subset of this broader request

💡 Notes and suggestions

• The default guest OS list is defined in DB seed data (e.g. engine/schema/src/main/resources/META-INF/db/schema-* and guest_os/guest_os_hypervisor tables) — historically new OS types are added via SQL upgrade scripts per major release.
• Consider asking the reporter to specify exactly which OS/version combinations they need (e.g. AlmaLinux 10, Rocky Linux 10, Ubuntu 24.04 already exists per issue text, Ubuntu 25.x, Debian 13) and for which hypervisors, to scope a concrete PR.
• Related discussion in Support Debian 13 (trixie) #12374 shows there is an established process/precedent for adding a single new guest OS via a dedicated PR — this issue could be split into per-OS sub-tasks following that pattern.

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[DaanHoogland]

@la-wu , there are APIs to define newer guest OSses. the project can not predict which newer versions will come out and when. Not reliably anyway. You could write yourself a script that adds guest OSses as soon as you have templates available.

Maybe in a later stage such a workflow can be integrated, but it is too unclear now. This is why @nvazquez added the needs-functional-definition label, and I agree with him.

I am converting this to a discussion item. You can start a new issue if you have a more implementable description of your requirement or discuss how that would look in the discussion.