Directory

In the above directories, bin, etc, data andlog are commonly used by users.

emqx、emqx.cmd

The executable file of EMQX Broker can be found in .

emqx_ctl、emqx_ctl.cmd

The executable file of EMQX Broker management command, you can check Management Command CLI for specific use.

EMQX Broker is set by configuration files in the etc directory. The main configuration files include:

EMQX Broker stores the running data in the data directory. The main files include:

configs/app.*.config

EMQX Broker reads the configuration in and etc/plugins/*.conf, converts it to the Erlang native configuration file format, and reads the configuration at runtime.

loaded_plugins

The loaded_plugins file records the list of plug-ins that was started by EMQX Broker by default. You can modify this file to add or delete plug-ins. The startup item format in loaded_plugins is {<Plugin Name>, <Enabled>}., the <Enabled>field is a Boolean type, and EMQX Broker will determine whether to start this plugin according to the value of <Enabled>. For more information about plugins, please see .

mnesia

EMQX Broker uses the Mnesia database to store its own running data, such as alarm records, resources and rules created by the rule engine, Dashboard user information, etc. These data will be stored under the mnesia directory. Once the directory is deleted, EMQX Broker will lose all business data.

You can query the system information of the Mnesia database in EMQX Broker through the emqx_ctl mnesia command. For details, please see Management Command CLI.

emqx.log.*

For the log file generated when EMQX Broker is running, please check Log and Trace.

crash.dump

The crash dump file of EMQX Broker can be modified through etc/emqx.conf , and the specific content can be viewed in .

It can control the copy of the console log when EMQX Broker is started in the background with .