In Kubernetes (k8s), a headless service is a type of service that does not have an assigned IP address for the service endpoint. Instead, it returns the IP addresses of all the pods associated with it. This is useful in scenarios where you need to connect to individual pods directly, rather than routing traffic through a load balancer.
Headless services are often used with stateful applications like databases, where each pod needs its own unique hostname and stable network identity. By using a headless service, you can query the DNS records for your stateful set or replica set to get the IPs of all running instances, which allows you to connect directly to any given pod.
To create a headless service in Kubernetes, you can simply set “clusterIP: None” in the service YAML file.
