kube-controller-manager
Glossary page
The control plane component that manages Kubernetes' system state by running controller processes is called the controller manager. Although each controller is a separate process, the controller manager compiles them into a single binary and runs them in a single process to simplify management and reduce complexity. The controller manager is responsible for managing various controllers, such as the Node controller, Endpoint controller, and Service Account and Token controller, among others. These controllers continuously monitor the system's state and attempt to move it to the desired state.
https://kubernetes.io/docs/reference/glossary/?all=true
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