Permission implementing Systemd Service Not Starting on Ubuntu 22.04 Using Custom User
I'm building a feature where I've spent hours debugging this and I'm having trouble getting my systemd service to start correctly on Ubuntu 22.04 when it's set to run as a non-root user... The service is defined in `/etc/systemd/system/myapp.service` and is set up as follows: ```ini [Unit] Description=My App Service [Service] User=myuser Group=mygroup ExecStart=/usr/bin/python3 /path/to/myapp.py Restart=on-failure [Install] WantedBy=multi-user.target ``` When I attempt to start the service with `systemctl start myapp.service`, I get the following behavior in the logs: ``` Failed to start myapp.service: Access denied ``` I checked the permissions of the script and the directories it accesses, and they all seem correct for `myuser`. I verified that `myuser` is part of `mygroup`, and that group has read and execute permissions on the script and the surrounding files: ```bash ls -l /path/to/myapp.py -rwxr-xr-- 1 myuser mygroup 1234 Oct 21 12:00 /path/to/myapp.py ``` Additionally, I've enabled the service and reloaded the systemd daemon with: ```bash sudo systemctl daemon-reload sudo systemctl enable myapp.service ``` However, every time I try to start the service, it fails. I've also checked the journal logs using `journalctl -u myapp.service`, and they only show "Access denied" without any further details. Is there something I'm missing in the systemd configuration, or could this be an scenario with user permissions that I haven't accounted for? Any guidance would be appreciated! I'm working on a application that needs to handle this. How would you solve this? I'm on Ubuntu 20.04 using the latest version of Python. Cheers for any assistance! This issue appeared after updating to Python latest. Is there a simpler solution I'm overlooking? I recently upgraded to Python LTS. Is this even possible?