Service exposition with ListenerClasses

Apache Druid offers a web UI and an API, both are exposed by the router role. Other roles also expose API endpoints such as the broker and coordinator. The Operator deploys services called <name>-<role> (where <name> is the name of the DruidCluster and <role> is the role for the Service) through which Druid can be reached.

These services can have three different types: cluster-internal, external-unstable and external-stable. Read more about the types in the service exposition documentation at platform level.

This is how the listener class is configured:

    listenerClass: cluster-internal  (1)
1 The default cluster-internal setting.

This setting affects all role Services at once.