SeedImage add platform selector

[frelon]

When building installation media, it's also possible to select the target platform of the built image/iso.

Right now it could be a hardcoded list with linux/x86_64 and linux/arm64 and default to the current platform rancher is running on (or x86 if easier).

This should set the targetPlatform field on the seedImage resource:

apiVersion: elemental.cattle.io/v1beta1
kind: SeedImage
metadata:
  name: fire-img
  namespace: fleet-default
spec:
  baseImage: registry.opensuse.org/isv/rancher/elemental/dev/containers/suse/sl-micro/6.0/baremetal-os-container:latest
  targetPlatform: linux/arm64

[kkaempf]

@aalves08 is this sufficient or would you need a JIRA as well ?

[aalves08]

wasn't aware of this @kkaempf . I think this will suffice. I'll catch up with @frelon . Thanks!

[kwwii]

What is the relationship between media type, arch, and os version? Am I correct to assume that the media type will specify both arch and os version? Will there always be builds for all architectures for every os version?

[kwwii]

As a side note, including the arch in the OS Version name (currently only the iso x86_64 builds do this) will make it confusing for users if we add a selector for the arch elsewhere.

[aalves08]

@frelon @davidcassany what elemental-operator will this be bound to? Will it be like the media type, which the mininum version is 1.6.2? https://github.com/rancher/elemental-ui/blob/main/pkg/elemental/utils/feature-versioning.ts#L18-L37

[davidcassany]

@frelon @davidcassany what elemental-operator will this be bound to? Will it be like the media type, which the mininum version is 1.6.2? https://github.com/rancher/elemental-ui/blob/main/pkg/elemental/utils/feature-versioning.ts#L18-L37

Yes 1.6.2 is a good version cut. Any version >= 1.6.2 is fine.

[davidcassany]

What is the relationship between media type, arch, and os version? Am I correct to assume that the media type will specify both arch and os version? Will there always be builds for all architectures for every os version?

That's a good point. We might be missing on per OS version basis which are the architectures available.

[aalves08]

@frelon @davidcassany what elemental-operator will this be bound to? Will it be like the media type, which the mininum version is 1.6.2? https://github.com/rancher/elemental-ui/blob/main/pkg/elemental/utils/feature-versioning.ts#L18-L37

Yes 1.6.2 is a good version cut. Any version >= 1.6.2 is fine.

Does this mean the operator in staging (1.6.3) has the support for this feature @davidcassany or do we leave this to another release of the UI?

[anmazzotti]

@aalves08 FYI we added a new field: ManagedOSVersion.spec.metadata.platforms ( https://github.com/rancher/elemental-channels/pull/22/files )

If a ManagedOSVersion has this key, then any string in the array can be used as it is for the SeedImage.spec.targetPlatform, it will be linux/x86_64, or linux/aarch64 or both. (this is the case I'd show up a selection maybe)

If ManagedOSVersion.spec.metadata.platforms is not present, then everything stays as it is and SeedImage.spec.targetPlatform can stay empty (so no platform selection on the UI).

I hope this can help.

Since we are adding this to the SL Micro 6.0 channels, I think this feature can be gated to v1.6.3 of the operator, but it's not a blocker for 2.0.0 ui release, we can add it later.

@davidcassany also FYI in case I missed anything