无法从 systemd 服务启动 pythonscript

Question

Here is the my systemd unit file. I have a logging init script inside pythonscript. Here happened a filenot found error. At the same time it seems the python is from system python directory and not from my environment. how to solve this.

[Service]
User=nobody
Group=nogroup
ExecStart=/home/ubuntu/app/env/bin/python /home/ubuntu/app/backend/app.py --path=/tmp/app_1.sock

Systemd error log:

:     loghandler = TimedRotatingFileHandler('logs/mainserver.log', when="midnight", i
:   File "/usr/lib/python3.6/logging/handlers.py", line 202, in __init__
:     BaseRotatingHandler.__init__(self, filename, 'a', encoding, delay)
:   File "/usr/lib/python3.6/logging/handlers.py", line 57, in __init__
:     logging.FileHandler.__init__(self, filename, mode, encoding, delay)
:   File "/usr/lib/python3.6/logging/__init__.py", line 1032, in __init__
:     StreamHandler.__init__(self, self._open())
:   File "/usr/lib/python3.6/logging/__init__.py", line 1061, in _open
:     return open(self.baseFilename, self.mode, encoding=self.encoding)
: FileNotFoundError: [Errno 2] No such file or directory: '/logs/mainserver.log'

Also please tell from which directory my script is running..

Answer 1

I resolved this by adding directive in [Service] part

WorkingDirectory=/home/ubuntu/app/backend/

This is working without any errors. I think now python env is used from my aioenv . Otherwise it aready should show some erros. Also keep in mind do not put the WorkingDirectory before ExecStart= Hope this will help someone