In kubernetes, controller-manager and scheduler achieve HA by creating an Endpoint, for example:
As far as i know, LeaderElection just create an endpoint without service. However, in endpoint controller, it will delete endpoints without corresponding services, which will cause leader transition.
endpoints_controller source code
I dont't know if i miss something important or the leader election exists bugs.
You may understand the code wrong, here I assume you've already have knowledge about list-watch mechanism in APIServer.
In NewEndpointController, you can see that EndpointController only care about pod and service resource, only when these two kind of resource change(add/update/delete) will be caught by EndpointController. So create a standalone endpoint(this event) will not be captured by EndpointController, and will only remind kube-proxy create related network config in host.
