Scheduler

The scheduler is perhaps the single most important component that makes Kubernetes a useful and practical tool. It watches for new pods in the unscheduled state, and then analyzes the current state of the cluster with regard to running workloads, available resources, and other policy-based issues. It then decides the best place for that pod to be run in. As with the controller manager, a single instance of the scheduler works at any one time, but in a high-availability configuration, leader election is available.