Hi guys im trying to install prefect, but all times this error appears. Whats the most easy way to install prefect ? Thanks

/home/luan/anaconda3/lib/python3.7/site-packages/prefect/cli/server.py:236: YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated, as the default Loader is unsafe. Please read <https://msg.pyyaml.org/load> for full details.

y = yaml.load(file)

`ERROR: Couldn't connect to Docker daemon - you might need to run

docker-machine start default

.`

Exception caught; killing services (press ctrl-C to force)

`ERROR: Couldn't connect to Docker daemon - you might need to run

docker-machine start default

.`

Traceback (most recent call last):

File "/home/luan/anaconda3/lib/python3.7/site-packages/prefect/cli/server.py", line 291, in start

["docker-compose", "pull"], cwd=compose_dir_path, env=env

File "/home/luan/anaconda3/lib/python3.7/subprocess.py", line 347, in check_call

raise CalledProcessError(retcode, cmd)

subprocess.CalledProcessError: Command '['docker-compose', 'pull']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "/home/luan/anaconda3/bin/prefect", line 10, in <module>

sys.exit(cli())

File "/home/luan/anaconda3/lib/python3.7/site-packages/click/core.py", line 764, in __call__

return self.main(*args, **kwargs)

File "/home/luan/anaconda3/lib/python3.7/site-packages/click/core.py", line 717, in main

rv = self.invoke(ctx)

File "/home/luan/anaconda3/lib/python3.7/site-packages/click/core.py", line 1137, in invoke

return _process_result(sub_ctx.command.invoke(sub_ctx))

File "/home/luan/anaconda3/lib/python3.7/site-packages/click/core.py", line 1137, in invoke

return _process_result(sub_ctx.command.invoke(sub_ctx))

File "/home/luan/anaconda3/lib/python3.7/site-packages/click/core.py", line 956, in invoke

return ctx.invoke(self.callback, **ctx.params)

File "/home/luan/anaconda3/lib/python3.7/site-packages/click/core.py", line 555, in invoke

return callback(*args, **kwargs)

File "/home/luan/anaconda3/lib/python3.7/site-packages/prefect/cli/server.py", line 307, in start

["docker-compose", "down"], cwd=compose_dir_path, env=env

File "/home/luan/anaconda3/lib/python3.7/subprocess.py", line 395, in check_output

**kwargs).stdout

File "/home/luan/anaconda3/lib/python3.7/subprocess.py", line 487, in run

output=stdout, stderr=stderr)

subprocess.CalledProcessError: Command '['docker-compose', 'down']' returned non-zero exit status 1.

Hi @Luan Carvalho - it appears you can't connect to the Docker daemon, do you have Docker running and does your user have access to it?

@nicholas Yes, my docker its running I dont know why he cannot access

Ah ok! Which OS are you on?

Ubuntu

Got it - have you created the

docker

group and added your user to it? If not you'll need to run:

sudo groupadd docker

then

sudo usermod -aG docker $(whoami)

and then log out/log back in and run

sudo service docker restart