Kubernetes中的哪个组件负责资源分配？

Question

在Kubernetes中的一个节点中调度了pod之后，哪个组件负责在该节点中的pod之间共享资源？

Answer 1

From https://kubernetes.io/docs/concepts/overview/components :

kube-scheduler - Component on the master that watches newly created pods that have no node assigned, and selects a node for them to run on.

Factors taken into account for scheduling decisions include individual and collective resource requirements, hardware/software/policy constraints, affinity and anti-affinity specifications, data locality, inter-workload interference and deadlines.

After pod is scheduled node's kubelet is responsible for dealing with pod's requests and limits. Depending on pod's quality of service and node resource pressure pod can be evicted or restarted by kubelet.

Answer 2

After scheduling

That will be the OS kernel.

You can reserve/limit pod resources: https://cloud.google.com/blog/products/gcp/kubernetes-best-practices-resource-requests-and-limits . Than it is passed from kubelet down to docker, then to cgroups, and finally to a kernel.