Kuidas toimub suhtlus Kubernetes'i klastris olevate teenustega?

In Kubernetes, interaction with services within the cluster is carried out 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 receives an internal IP, accessible only within the cluster. Other pods connect to the service via this IP or DNS name.

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

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

Example: if you have a service my-service in the default namespace, pods inside the cluster can access it via the name my-service or my-service.default.svc.cluster.local.

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