for #32014
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
- [X] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files)
for more information.
## Testing
- [X] Added/updated automated tests
- [X] Where appropriate, [automated tests simulate multiple hosts and
test for host
isolation](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/reference/patterns-backend.md#unit-testing)
(updates to one hosts's records do not affect another)
- [X] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- New Features
- GitOps manual labels can now reference hosts by Fleet host ID in
addition to hostname, hardware serial, or UUID.
- GitOps YAML/JSON accepts integers for host IDs; numeric IDs are
handled seamlessly alongside strings.
- Validation
- Stronger input validation for label hosts: only strings or integers
are allowed.
- Clear error returned for invalid types (e.g., floats) in hosts lists.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
For #24473
# Checklist for submitter
<!-- Note that API documentation changes are now addressed by the
product design team. -->
- [ ] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/Committing-Changes.md#changes-files)
for more information.
## Details
This PR adds the ability to manage labels via GitOps. Usage is as
follows:
* If a top-level `labels:` key is provided in the global YAML file
provided to GitOps, then any labels in this list will be created (if
using a new name) or updated (if using an existing name).
* If no top-level `labels:` key is provided, no changes will be made to
labels. This allows backwards-compatibility; customers won't blow away
all of their labels if they don't immediately use `labels:` in their
YAML
Additionally, some new validation has been added so that label usage is
checked prior to application. This means that when the gitops command is
run, it will verify that any labels referenced elsewhere in the YAML
(e.g. by software installers or mdm profiles) exist, and will bail with
an error message if they don't.
## Testing
**Test label deletion**
1. Add some labels via the UI
2. Run `fleetctl gitops --dry-run` with a default.yml file _without_
`labels:` in it, and verify that it doesn't say it will update or delete
any labels
2. Run `fleetctl gitops` with a default.yml file _without_ `labels:` in
it, and verify that it doesn't modify or remove your labels
4. Run `fleetctl gitops --dry-run` with a default.yml file with
`labels:` in it and nothing underneath, and verify that it says that it
will delete your labels
4. Run `fleetctl gitops` with a default.yml file with `labels:` in it
and nothing underneath, and verify that it removes all your labels
**Test label create/update**
1. Add a label "foo" via the UI
2. Run `fleetctl gitops --dry-run` with a default.yml file with two
`labels:` in it, one named "foo" and one named "bar". Verify that the
output says that one label will be created and one will be updated.
2. Run `fleetctl gitops` with a default.yml file with two `labels:` in
it, one named "foo" and one named "bar". Verify that the two labels now
exist in the UI with the configuration you specified.
**Test label usage**
1. Add a label "foo" in the UI.
1. Run `fleetctl gitops --dry-run` with a default.yml file _without_
`labels:` in it, where a software installer or mdm profile uses the
"foo" label via `labels_include_any`. Verify that the output doesn't
complain about unknown labels.
1. Run `fleetctl gitops --dry-run` with a default.yml file _with_
`labels:` in it with nothing underneath, and a software installer or mdm
profile uses the "foo" label via `labels_include_any`. Verify that the
output complains about unknown label "foo"
1. Run `fleetctl gitops --dry-run` with a default.yml file _with_
`labels:` in it with a "foo" label defined underneath, and a software
installer or mdm profile uses the "foo" label via `labels_include_any`.
Verify that the output doesn't complain about unknown labels.
