·May 6, 2022·
1 min read
# What is a NodePort?
A NodePort is an open port on every node of your cluster. Kubernetes transparently routes incoming traffic on the NodePort to your service, even if your application is running on a different node.
Every Kubernetes cluster supports NodePort, although if you’re running in a cloud provider such as AKS or EKS, you may have to edit your firewall rules. However, a NodePort is assigned from a pool of cluster-configured NodePort ranges (typically 30000–32767). While this is likely not a problem for most TCP or UDP clients, HTTP or HTTPS traffic ends up being exposed on a non-standard port.
apiVersion: v1 kind: Service metadata: name: my-service spec: type: NodePort selector: app: MyApp ports: # By default and for convenience, the `targetPort` is set to the same value as the `port` field. - port: 80 targetPort: 8080 # Optional field # By default and for convenience, the Kubernetes control plane will allocate a port from a range (default: 30000-32767) nodePort: 30007
Hope you have got an idea about Kubernetes Nodeport and why it is needed
Thank you !