Start EMQ X

Start EMQ X broker in the background

$ emqx start
EMQ X Broker v4.0.0 is started successfully!

systemctl start

$ sudo systemctl start emqx
EMQ X Broker v4.0.0 is started successfully!

service start

$ sudo service emqx start
EMQ X Broker v4.0.0 is started successfully!

If you are using EMQ X Enterprise, you need to import a license to use it. For the import steps, see Start EMQ X Enterprise below.

EMQ X Broker installed via ZIP archive does not support systemctl and service startup.

Check the status of EMQ X Broker

EMQ X Broker starts normally:

$ emqx_ctl status
Node 'emqx@127.0.0.1' is started
emqx 4.0.0 is running

EMQ X Broker failed to start normally:

$ emqx_ctl status
Node 'emqx@127.0.0.1' not responding to pings。

You can check the log file from logs and confirm whether it belongs to Common Error.

Request a trial license

EMQ X Enterprise requires a license file to start normally. EMQ X Broker can skip this step.

  1. Visit https: // emqx.io. On the EMQ X Enterprise download page, click Get FREE Trial License.

  2. Register to log in and apply for a trial license file, then download the license file.

  3. Replace the license file (etc/emqx.lic) in the default certificate directory. You can also choose to change the read path of the certificate file, modify license.file in the etc/emqx.conf file, and make sure that the license file is in the updated read path and EMQ X Enterprise has read permission. Then, start EMQ X Enterprise. EMQ X Enterprise is started in the same way as EMQ X Broker, which can be seen below.

  4. If the running EMQ X Enterprise needs to update the license file, you can use the emqx_ctl license reload [path of the license file] command to directly update the license file without restarting EMQ X Enterprise. It should be noted that the certificate loaded by the emqx_ctl license reload command will only take effect during this run of EMQ X Enterprise. If you need to permanently update the license certificate path, you still need to replace the old certificate or modify the configuration file, which can be seen from the previous step.

The certificate loaded by the emqx_ctl license reload command will only take effect during this runtime of EMQ X Enterprise. If you need to permanently update the path of the License certificate, you still need to replace the old certificate or modify the configuration file.

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