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DevOps & Automation · Advanced

Headless Service

A Kubernetes Service with clusterIP: None that returns individual pod IPs via DNS instead of a single virtual IP.

Definition

Headless Services enable direct pod discovery and give StatefulSet pods stable DNS names like pg-0.pg.default.svc.cluster.local.

Example

clusterIP: None on a Service named pg for a StatefulSet.

Exam tip

StatefulSets require a headless Service for stable network identities.

Related terms