filtering like with other would work

So If I understand correctly, you get a slug collision when naming two datacenters the same way (but different case):

source:
  - name: TestDC
    type: ovirt
    ...
    
  - name: TESTDC
    type: vcenter
    ...

Yes, it is correct. With some massive deployments resolving such problems in Hyperviaors might be 'complicated' and take time. A way to rename / remat ClusterGroups would ease onboarding

Ok understandable, so I can add an option like this in config.yaml:

source:
  - name: TestDC
    type: ovirt
    datacenterRename:
      - TestDC = testdc_ov
    
  - name: TESTDC
    type: vcenter
    datacenterRename:
      - TESTDC = testdc_vc

Or do you suggest different approach?

I this this approach is good, thus I would call it consistently with other relation mappings, like:
datacenterClusterGroupRelations as in model we use Cluster Groups for that, or somehow similarly.

Yeah I agree.

🎉 This issue has been resolved in version 0.6.8 🎉

The release is available on GitHub release

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