Port Requirements

Master Nodes (etcd and controlplane nodes)

protocol	port range	purpose
tcp	22	ssh server
tcp	80	Rancher Server
tcp	443	Rancher Server
tcp	6443	kubernetes api server
tcp	2379-2380	etcd server client api
tcp	10250	kubelet api
tcp	10251	scheduler
tcp	10252	kube-controller-manager
tcp	10253	federation
tcp	10254	ingress
tcp	10255	read-only kubelet api
tcp	10256	kubeproxy
udp	8472	canal

Worker Nodes

protocol	port range	purpose
tcp	22	ssh server
tcp	80	ingress
tcp	443	ingress
tcp	10250	kubelet api
tcp	10251	scheduler
tcp	10252	kube-controller-manager
tcp	10253	federation
tcp	10254	ingress
tcp	10255	read-only kubelet api
tcp	10256	kubeproxy
tcp	30000-32767	nodeport services
udp	8472	canal