Node, Pod, and Container relationship
WHAT IT TESTS: the core scheduling unit hierarchy. OUTLINE: a Node is a machine, a Pod is the smallest deployable unit wrapping one or more containers that share network and storage, and the Pod abstraction enables co-location and lifecycle management.
WHAT IT TESTS: whether you understand why the Pod exists as an abstraction. ANSWER OUTLINE: a Node is a worker machine, physical or virtual. A Pod is the smallest schedulable unit and wraps one or more tightly coupled containers that share a network namespace, IP, and volumes. Kubernetes schedules Pods, not bare containers, so it has a consistent unit for IP allocation, co-located helper containers, shared storage, and lifecycle.
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- #kubernetes
- #pods
- #nodes
- #containers
- #fundamentals
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