How is interaction with services within the Kubernetes cluster carried out?

In Kubernetes, interaction with services inside the cluster is done through the Service object, which provides a stable IP address and DNS name for a set of pods.

Main methods of interaction:

• ClusterIP — the service gets an internal IP, accessible only within the cluster. Other pods access the service via this IP or DNS name.

• DNS — Kubernetes automatically creates DNS records for services, such as my-service.namespace.svc.cluster.local, simplifying access.

• Endpoints — the service links requests to a set of pods (Endpoints) that match the service's selectors.

For example, if you have a service my-service in the default namespace, pods inside the cluster can access it by the name my-service or my-service.default.svc.cluster.local.

Thus, services within the cluster communicate via internal IP and DNS, ensuring reliable and scalable interaction without needing to know the IPs of specific pods.