Hello i m trying to test out prefect locally on a linux mach

Question

Hello i m trying to test out prefect locally on a linux machine and running into something that it seems a bunch of others have run into but not sure how to solve it

Tom Klein · Answer

this is what i m seeing ``` 51180 Failed to execute script docker compose Exception caught killing services press ctrl C to force Traceback most recent call last File urllib3 connectionpool py line 677 in urlopen File urllib3 connectionpool py line 392 in make request File http client py line 1277 in request File http client py line 1323 in send request File http client py line 1272 in endheaders File http client py line 1032 in send output File http client py line 972 in send File docker transport unixconn py line 43 in connect FileNotFoundError Errno 2 No such file or directory During handling of the above exception another exception occurred Traceback most recent call last File requests adapters py line 449 in send File urllib3 connectionpool py line 727 in urlopen File urllib3 util retry py line 410 in increment File urllib3 packages six py line 734 in reraise File urllib3 connectionpool py line 677 in urlopen File urllib3 connectionpool py line 392 in make request File http client py line 1277 in request File http client py line 1323 in send request File http client py line 1272 in endheaders File http client py line 1032 in send output File http client py line 972 in send File docker transport unixconn py line 43 in connect urllib3 exceptions ProtocolError Connection aborted FileNotFoundError 2 No such file or directory During handling of the above exception another exception occurred Traceback most recent call last File docker api client py line 214 in retrieve server version File docker api daemon py line 181 in version File docker utils decorators py line 46 in inner File docker api client py line 237 in get File requests sessions py line 543 in get File requests sessions py line 530 in request File requests sessions py line 643 in send File requests adapters py line 498 in send requests exceptions ConnectionError Connection aborted FileNotFoundError 2 No such file or directory During handling of the above exception another exception occurred Traceback most recent call last File docker compose line 3 in lt module gt File compose cli main py line 81 in main File compose cli main py line 200 in perform command File compose cli command py line 70 in project from options File compose cli command py line 153 in get project File compose cli docker client py line 43 in get client File compose cli docker client py line 170 in docker client File docker api client py line 197 in init File docker api client py line 222 in retrieve server version docker errors DockerException Error while fetching server API version Connection aborted FileNotFoundError 2 No such file or directory 51184 Failed to execute script docker compose Traceback most recent call last File home klayhamn local lib python3 9 site packages prefect cli server py line 623 in start subprocess check call File usr lib64 python3 9 subprocess py line 373 in check call raise CalledProcessError retcode cmd subprocess CalledProcessError Command docker compose pull returned non zero exit status 255 During handling of the above exception another exception occurred Traceback most recent call last File home klayhamn local bin prefect line 8 in lt module gt sys exit cli File usr local lib python3 9 site packages click core py line 829 in call return self main args kwargs File usr local lib python3 9 site packages click core py line 782 in main rv = self invoke ctx File usr local lib python3 9 site packages click core py line 1259 in invoke return process result sub ctx command invoke sub ctx File usr local lib python3 9 site packages click core py line 1259 in invoke return process result sub ctx command invoke sub ctx File usr local lib python3 9 site packages click core py line 1066 in invoke return ctx invoke self callback ctx params File usr local lib python3 9 site packages click core py line 610 in invoke return callback args kwargs File home klayhamn local lib python3 9 site packages prefect cli server py line 664 in start subprocess check output File usr lib64 python3 9 subprocess py line 424 in check output return run popenargs stdout=PIPE timeout=timeout check=True File usr lib64 python3 9 subprocess py line 528 in run raise CalledProcessError retcode process args subprocess CalledProcessError Command docker compose down returned non zero exit status 255 ```

Tom Klein · Answer

the commands i used were as per the instructions i e ```pip install prefect``` followed by ```prefect server start```

Anna Geller · Answer

< Tom Klein> Prefect Cloud is the default so before starting Server you need to switch the backend ```prefect backend server prefect server start```

Tom Klein · Answer

i tried that too doesn t help same error

Rainer Volz · Answer

errors like this appear when the connection to the docker daemon is not ok So you could check if your user is in the docker group and if the daemon started properly

Anna Geller · Answer

Could you try reinstalling Docker Desktop and docker compose somehow you re getting docker client errors so those are no Prefect specific errors but rather from the Docker client ``` docker api client py ``` Could you check if your Docker is running upside down face I know it sounds stupid but you can start it on a Linux machine using ```sudo systemctl start docker ```

Tom Klein · Answer

< Anna Geller> ya it s running still same error

Anna Geller · Answer

btw did you know that Prefect Cloud is much easier to get started and is free to use for the first 20000 tasks each month I would definitely recommend starting with Cloud rather than Server you can still have a local agent and running things locally

Tom Klein · Answer

< Rainer Volz> i ll try to check thanks

Tom Klein · Answer

< Anna Geller> i tried that too see my other issue downstream in the channel slightly smiling face

Kevin Kho · Answer

You can try doing `docker run hello world` to verify docker is working right

Tom Klein · Answer

< Kevin Kho> thanks seems like it only works when i `sudo` it and otherwise i get a permission error should i run prefect with sudo

Rainer Volz · Answer

No add your user to the docker group This works for Ubuntu ```usermod aG docker user name```