For lots of CNCF projects, kinds of daemonsets simultaneously synchronize datas from the Api-server from each node. Especially in large-scale clusters, it creates significant pressure on the Api-server, burdens the network, even affects the stability of the cluster.
Some projects have implemented optimization to address this. For instance, Cilium aggregates endpoint information into the CRD CiliumEndpointSlice before distributing it to its daemonset. However, many projects have not yet adopted such data aggregation optimizations and Currently, there is still no project to help improve the communication between all components and the Api-server.
ClusterPedia supports to launch per-node Api-server proxies to serve all local pods, and utilize eBPF to resolve the API server's clusterIP to the local proxy, which transparently implements API server access redirection on demand. In large-scale clusters, this can significantly improve the stability of all cluster's services.