How to detect the active Controller Manager and Scheduler in a Kubernetes HA Master setup?

Question

I've set a kubernetes cluster with master in high availability: 3 etcd nodes, 3 apiservers, 3 controller managers and 3 schedulers. There is a load balancer in front of the api servers. I see apiservers running as Active-Active while Controller Manager and Scheduler are working as Active/Standby. Does anyone know how to detect the active Controller Manager and Scheduler in a HA Master setup?

All the K8s infra components are managed by systemd not by dockerd.

Thanks.

Answer 1

In my case, retrieving the endpoints yaml and looking in the "holderIdentity" field of the "...kubernetes.io/leader" annotation.