====Running Triggers as a Service====

You can run your ARDI Trigger script as a service in Windows and as a daemon in Linux.

Make sure you finish your script with a call to [[Interactive|Interactive]] rather than **Start** or **Backfill**.

Call your script with the **--last** parameter, specifying the path to a file that the system uses to record the most recent update. Ensure that this file can be written to and read by the user your service/daemon will run as.

===Windows===

In Windows, you can launch your program using **NSSM**, which is included in the **/drivers/** folder of your ARDI installation.

Ensure you place double-quotes around any path names - spaces can cause problems.

Remember that the actual application you're running is Python - the name of the script is the first //parameter// to the Python executable.

Some platforms will require you to include the ".exe" after the Python path.

===Linux===

Create a new systemd //unit file//, filling in the description and path as required.

Copy this file into your systemd configuration directory - usually **/etc/systemd/system**.

<code>
[Unit]
Description = <Your service description here>
After = network.target 
 
[Service]
Type = simple
ExecStart = python <Path of the script you want to run> --last <Path to a read/write text file>
User = #Enter a user name here
Group = #Enter a group name here
Restart = on-failure
SyslogIdentifier = <Name of logs for the service>
RestartSec = 5
TimeoutStartSec = infinity
 
[Install]
WantedBy = multi-user.target
</code>

Enable the service with the following commands...

<code>
systemctl enable <service file name without .service extension>
systemctl daemon-reload
systemctl start <service file name without .service extension>
</code>