does clusternet support Multi-Cluster Controller

[magicsong]

What would you like to be added:

Why is this needed:

Centralized Management: Administrators would benefit from a single pane of glass to manage multiple clusters, simplifying the user experience.
Reduced Complexity: Eliminating the need for individual controllers for each cluster would reduce the complexity inherent in maintaining separate instances.
Resource Optimization: A centralized controller could optimize resource allocation and workload distribution across multiple clusters more effectively.

[dixudx]

@magicsong This should be evaluated on a case by case basis. There are some pros and cons for such centralized all-in-one controllers. However, some capabilities are provided in Clusternet to help achieve your scenario, such as wrappers, child cluster access info, proxy redirects, etc.

[magicsong]

A centralized Controller is more suitable for public cloud and hybrid cloud scenarios, as it does not require the installation of components within clusters, nor does it necessitate user intervention for component maintenance. As the number of clusters increases, the resulting resource and cost benefits will become more significant.

[dixudx]

There are some pros and cons for such centralized all-in-one controllers. For some cases, it will bring us some benefits.

As the number of clusters increases, the resulting resource and cost benefits will become more significant.

For a large number of clusters, will the performance of such a centralized controller be downgraded? Also if such controllers are out of services, will a single cluster or whole clusters get affected?

Cost-efficiency is a good measurement, but not the only measurement.

[magicsong]

take a look at https://github.com/metacontroller/metacontroller, combined with this feature, maybe we can create a powerful and self-service Api Hub where we can use crd to "order a pizza" in any where

[magicsong]

let me have a try @dixudx 🤝