Controller Configuration

When a Crossbar.io node starts, initially only a single process is started: the node controller.

The node controller is the master process of everything. At each time, there is exactly one node controller process running. When the node controller process has ended, the Crossbar.io node is down.

The node controller can be configured using the controller item in the node’s configuration:

{
   "controller": {
      "id": "mynode1",
      "options": {
         "title": "mycontroller"
      }
   }
}

The available parameters in the controller dictionary are:

option	description
``id``	The ID of the node (default: hostname of machine)
``options``	Controller process options - see below (default: ``{}``).
``manager``	Uplink Crossbar.io management application (upcoming).

The available options are:

option	description
title	The controller process title (default: “crossbar-controller”)
shutdown	Controls how and when crossbar shuts down. Permitted values are: shutdown_on_shutdown_requested (default for “managed” mode), shutdown_on_worker_exit (default), shutdown_on_worker_exit_with_error, and shutdown_on_last_worker_exit.