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»listener Stanza

The listener stanza configures the addresses and ports on which Boundary will respond to requests. At this time, there are two listener types: TCP and Unix.

»listener Purpose

The purpose field is used to determine what part of Boundary's functionality is started and exposed for a given listener block. Each listener must have a purpose set.

Currently, Boundary recognizes the following listener purposes:

  • api: Starts up and exposes Boundary's controller API. At least one api listener must be present if a Boundary instance is set-up as a controller. By default, it runs on :9200.

  • cluster: Starts up and exposes Boundary's worker and controller communication layer. Only one cluster listener is allowed per Boundary instance. Must be present if a Boundary instance is set-up as a controller. By default, it runs on :9201.

  • proxy: Starts up a Boundary Worker. By default, it runs on :9202.

  • ops: Starts up and exposes Boundary's operational endpoints (eg: /health). By default, it runs on :9203. This listener's exposed functionality depends on what Boundary components you're running on any given Boundary instance (eg: Health does not run unless your Boundary instance has a controller running)