I m trying to set up a prefect server service from a virtual

Question

I m trying to set up a prefect server service from a virtual environment with `ExecStart= home ubuntu apps dataflows venv bin prefect server start host 0 0 0 0` Receiving the following error Anyone ever see this and or knows how to fix this ``` File home ubuntu pyenv versions 3 11 2 lib python3 11 asyncio base subprocess py line 36 in init self start args=args shell=shell stdin=stdin stdout=stdout File home ubuntu pyenv versions 3 11 2 lib python3 11 asyncio unix events py line 810 in start self proc = subprocess Popen ^^^^^^^^^^^^^^^^^ File home ubuntu pyenv versions 3 11 2 lib python3 11 subprocess py line 1024 in init self execute child args executable preexec fn close fds File home ubuntu pyenv versions 3 11 2 lib python3 11 subprocess py line 1901 in execute child raise child exception type errno num err msg err filename FileNotFoundError Errno 2 No such file or directory uvicorn ```

Zanie · Answer

When you call `prefect server start` we start uvicorn in a subprocess <https github com PrefectHQ prefect blob main src prefect cli server py L147 L160>

Zanie · Answer

Sounds like uvicorn is not available on the path

Albert Wong · Answer

hhm it starts fine on the command line after I start up the virtual environment Is there some environment variable that needs to be set

Albert Wong · Answer

this is what I see when I try to install the package ``` venv ubuntu gbi tableau innovation ~ apps dataflows$ pip install uvicorn Requirement already satisfied uvicorn in venv lib python3 11 site packages 0 20 0 Requirement already satisfied click gt =7 0 in venv lib python3 11 site packages from uvicorn 8 1 3 Requirement already satisfied h11 gt =0 8 in venv lib python3 11 site packages from uvicorn 0 14 0 ```

Zanie · Answer

It looks like you are calling `prefect `directly from the venv bin

Zanie · Answer

Instead of activating the environment then calling Prefect

Zanie · Answer

So nothing else from the venv will be on the path

Zanie · Answer

I d take a look at the contents of ` venv bin activate`

Albert Wong · Answer

yeah that s sort of the recommendation for running daemons in virtual environments based on what I ve read but makes sense and thanks for the direction I ll see if there s something I can do on the systemd side else just wrap the whole thing in a script that starts the virtual environment before running the server

Albert Wong · Answer

Yup looks like there s an Environment variable I can set in the service script ```Environment= PATH= home ubuntu apps dataflows venv bin $PATH ``` Working now thanks for your help < Zanie>