[Fleet] Merge settings & mappings component template in @package

[nchaulet]

Summary

Resolve #128209

Mappings could depend on some other fields defined in template settings like analyzer for example. To avoid issues with missing settings, that PR merge @mappings and @settings component template in a new @package component template that contains both index template mapping and settings.

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[joshdover]

I'm +1 on this change, but I'd like to do some extra testing on this before we merge. @hop-dev let's make sure we update the test instructions for the QA team on the mappings component issue.

[nchaulet]

@elasticmachine merge upstream

[nchaulet]

@elasticmachine merge upstream

[kibana-ci]

💚 Build Succeeded

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Metrics [docs]

✅ unchanged

History

• 💚 Build #33665 succeeded fe282e7
• 💔 Build #33628 failed 4873aed
• 💔 Build #33587 failed bd8a559
• 💔 Build #33571 failed bad31b4

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @nchaulet

[ruflin]

What is the migration path from old to new? At what stage will the change be applied?

[nchaulet]

What is the migration path from old to new? At what stage will the change be applied?

This change will be applied when a package is upgraded or reinstalled. @hop-dev I think you make a change to do .fleet-global template in 8.2 right? if it's the case all the package will be reinstalled in 8.2 and everybody will get the change.

[hop-dev]

What is the migration path from old to new? At what stage will the change be applied?

This change will be applied when a package is upgraded or reinstalled. @hop-dev I think you make a change to do .fleet-global template in 8.2 right? if it's the case all the package will be reinstalled in 8.2 and everybody will get the change.

Yes thats right, it will be applied to every package on kibana startup

[ruflin]

if it's the case all the package will be reinstalled

If a package is reinstalled, does it mean all data streams are rolled over or only the ones with a conflict?

[nchaulet]

If a package is reinstalled, does it mean all data streams are rolled over or only the ones with a conflict?

Only one with conflict otherwise we just update the backing indices.

[joshdover]

LGTM, did additional testing upgrading from 8.1 -> this branch and found no unexpected issues. My custom mappings in @custom templates were correctly applied after the upgrade.