The purpose of a Service is to set up networking in a Kubernetes cluster.
There are four types of Services.
- NodePort - Mostly used for development purposes
Here's a sample Service config file.
apiVersion: v1 kind: Service metadata: name: client-node-port spec: # Specifying the type of Service type: NodePort # An array of ports ports: # port specifies the port that other pods can access to - port: 3000 # targetPort specifies the port being used for a container targetPort: 8080 # nodePort specifies the port mapped to the targetPort nodePort: 4000 # selector will basically look for Pods that have a matching key-value pair. # Pods that meet the criteria will use client-node-port as their Service. selector: component: web