Kubernetes Control Plane Scheduler

The Kubernetes Scheduler is a key component of the Kubernetes control plane. It’s responsible for scheduling pods onto nodes in the cluster. The scheduler selects the most suitable node for each pod based on a variety of factors, including resource availability, specific user requirements, workload-specific requirements, policy constraints, affinity and anti-affinity specifications, data locality, inter-workload interference, and others.

When you create a pod, the Kubernetes API server receives the request and the Scheduler decides where the pod should run based on the conditions mentioned above. The selected node is then sent back to the API server, which then communicates to the corresponding node to launch the pod. All of this scheduling decision-making contributes to optimizing the workload and resource usage in a Kubernetes cluster.