Kubernetes Port requirement during Kubernetes Installing using kubeadm

Control-plane node(s) – required ports

ProtocolDirectionPort RangePurposeUsed By
TCPInbound6443*Kubernetes API serverAll
TCPInbound2379-2380etcd server client APIkube-apiserver, etcd
TCPInbound10250Kubelet APISelf, Control plane
TCPInbound10251kube-schedulerSelf
TCPInbound10252kube-controller-managerSelf

Worker node(s) – required ports

ProtocolDirectionPort RangePurposeUsed By
TCPInbound10250Kubelet APISelf, Control plane
TCPInbound30000-32767NodePort Services**All
Rajesh Kumar
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