Question

A developer wants to expose a web application running in the cluster so it can be reached from outside using each node's IP address and a fixed port, without provisioning a cloud load balancer. Which Service type meets this requirement, and what port range does Kubernetes allocate for it by default?

Accepted Answer

A NodePort Service, which by default allocates a port in the range 30000–32767 on every node

Answer

A ClusterIP Service, which exposes a random port in the range 1–1024 on each node

Answer

A LoadBalancer Service, which is required because NodePort cannot be reached from outside the cluster

Answer

An ExternalName Service, which maps a node port in the range 8000–9000 to a DNS name