Services and Networking

A Service in Kubernetes is an abstraction that defines a logical set of pods and a policy to access them — typically via a DNS name and stable IP address.

Types of Services:

• ClusterIP: Default; accessible within the cluster
• NodePort: Exposes service on static port on each node
• LoadBalancer: Integrates with cloud provider’s load balancer

Example Service YAML:

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  type: NodePort
  selector:
    app: nginx
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80