[survey] Need your feedback on Karmada Concept <Host Cluster>

[RainbowMango]

Background
The Kubernetes SIG-Multicluster is proposing a standardized definition for the central cluster (currently termed "Host Cluster" in Karmada) to unify terminology across multi-cluster management projects like Karmada, OCM, clusternet, kubefleet, MCO, KubeAdmiral and so on. This initiative aims to improve cross-project interoperability and reduce ecosystem fragmentation.

To evaluate the impact of adopting this standard and gather user feedback, ​​we are launching a community survey​​. Your input will directly influence Karmada's alignment with SIG-MC's proposal and guide our compatibility strategies.

Survey Objective

• Assess adoption impact (e.g., API compatibility, product interfaces).
• Identify user preferences for terminology (Host Cluster vs. Hub Cluster, etc.).

Key Questions

• Are you using Karmada in production?
• Which term do you prefer for the cluster where Karmada is installed? (currently termed Host Cluster in Karmada)
  • Option: Host Cluster
  • Option: Hub Cluster
  • Option: Management Cluster
  • Option: Command Cluster
  • Option: Meta Cluster
  • Other suggestions: propose another one
• Which term do you prefer for the cluster which is managed by Karmada? (currently termed Member Cluster in Karmada)
  • Option: Member Cluster
  • Option: Spoke Cluster
  • Option: Workload Cluster
  • Option: Managed Cluster
  • Other suggestions: propose another one
• Would renaming "Host Cluster" affect your usage?
  • Option: No impact
  • Option: Minor adjustment(eg., documentation updates)
  • Option: Major changes (e.g., API/CLI/UI compatibility issues)

How to respond?
Please leave your comment on this issue or fill in the online form before June 10, 2025.

[RainbowMango]

cc @karmada-io/karmada-adopter-group

[likku123]

I prefer using the terms Host cluster and member cluster. Which is very convinient to me. I see hub and spoke model specifying in Open cluster Management which one might get confused when exploring or using both the tools.

[chengleqi]

Host Cluster/Member Cluster is fine.

[dongjiang1989]

Host Cluster/Member Cluster +1

[wenhuwang]

Host Cluster/Member Cluster +1

[riverzhang]

Host Cluster/Member Cluster +1

[chaunceyjiang]

Host Cluster/Member Cluster +1

[xuqianjins]

• Yes
• Host Cluster
• Member Cluster
• No impact

[jabellard]

Host Cluster/Member Cluster +1

[yenniechen]

Yes
Host Cluster
Member Cluster
No impact

[yangsoon]

1. Yes
2. Host Cluster +1
3. Member Cluster +1
4. No impact

[RainbowMango]

Thank you all guys for participating in this.
The survey has now been closed, and you can get the public result from here. Summary of the results is:

• Karmada users prefer to the concept host cluster and member cluster
• Changing the concepts will slightly affect some users

For the next move, I will continue talking to SIG-Multicluster and will sync the progress here later.