Systemctl

• In general, services are located in /etc/systemd/system/ and are described in .services files. To create a new service, follow the steps:

  1. Create a .service file, for example my-app.service

  2. Add context:

     [service]
     ExecStart=/usr/bin/python3 /opt/code/app.py
     

  3. Reload systemctl daemon: $ systemctl daemon-reload

  4. Start the new service: $ systemctl start my-app

  5. To start a service when the system is booted up:

     [unit]
     Description=My python web app
          
     [service]
     ExecStart=<command>
     ExecStartPre=<command>
     ExecStartPos=<command>
          
     [install]
     WantedBy=multi-user.target
     

  6. TODO