Kubernetes Service Types and DNS-Based Discovery

Calendar February 22, 2026
Kubernetes
Intermediate
Service-Configuration, Service-Debugging
Services, Dns, Networking, Clusterip, Nodeport, Loadbalancer
Kubectl, Nslookup, Curl

Kubernetes Service Types and DNS-Based Discovery#

Services are the stable networking abstraction in Kubernetes. Pods come and go, but a Service gives you a consistent DNS name and IP address that routes to the right set of pods. Choosing the wrong Service type or misunderstanding DNS discovery is behind a large percentage of connectivity failures.

Service Types#

ClusterIP (Default)#

ClusterIP creates an internal-only virtual IP. Only pods inside the cluster can reach it. This is what you want for internal communication between microservices.