Getting error 'ConnectionError: ('Connection aborted.', error(2, 'No such file or directory'))'

[michaelbarton]

I am getting an error when trying to use dockerpty. Using the example in the README:

import docker
import dockerpty

client = docker.Client()
container = client.create_container(
    'busybox:latest',
    stdin_open=True,
    tty=True,
    command='/bin/sh')

dockerpty.start(client, container)

When I run this, I get the error:

Traceback (most recent call last):
  File "test_script.py", line 9, in <module>
    command='/bin/sh')
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/docker/api/container.py", line 116, in create_container
    return self.create_container_from_config(config, name)
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/docker/api/container.py", line 126, in create_container_from_config
    res = self._post_json(u, data=config, params=params)
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/docker/client.py", line 166, in _post_json
    return self._post(url, data=json.dumps(data2), **kwargs)
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/docker/client.py", line 107, in _post
    return self.post(url, **self._set_request_timeout(kwargs))
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/requests/sessions.py", line 508, in post
    return self.request('POST', url, data=data, json=json, **kwargs)
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/requests/sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/requests/sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "/Users/michaelbarton/Library/Python/2.7/lib/python/site-packages/requests/adapters.py", line 415, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', error(2, 'No such file or directory'))

Here are the details of my docker install, using docker-machine:

Client:
 Version:      1.9.0
 API version:  1.21
 Go version:   go1.4.3
 Git commit:   76d6bc9
 Built:        Tue Nov  3 19:20:09 UTC 2015
 OS/Arch:      darwin/amd64

Server:
 Version:      1.9.0
 API version:  1.21
 Go version:   go1.4.3
 Git commit:   76d6bc9
 Built:        Tue Nov  3 19:20:09 UTC 2015
 OS/Arch:      linux/amd64

And the details of my OS:

Darwin Michaels-MacBook-Air.local 14.5.0 Darwin Kernel Version 14.5.0: Wed Jul 29 02:26:53 PDT 2015; root:xnu-2782.40.9~1/RELEASE_X86_64 x86_64 i386 MacBookAir7,2 Darwin

[michaelbarton]

The following command does however work:

docker run -ti busybox:latest /bin/sh

[michaelbarton]

I have tried the above script on a separate work computer and got a similar error. This was with docker-py-1.5.0 and dockerpty-0.3.4

[mejamiewilson]

For anyone else coming across this: you get this error if there are no docker machines running. Try eval ${docker-machine env default} (or swap default for your machine name)

[rrmerugu]

@michaelbarton @mejamiewilson Did you find any solution ? I understand that eval ${docker-machine env default} works great for command, but any solution for Client() via script ?

OS info: Darwin Ravis-MacBook-Pro.local 15.5.0 Darwin Kernel Version 15.5.0: Tue Apr 19 18:36:36 PDT 2016; root:xnu-3248.50.21~8/RELEASE_X86_64 x86_64

[aanand]

If you're using Docker Machine, you can point docker-py at it using docker-machine env and the kwargs_from_env() utility method.

from docker import Client
from docker.utils import kwargs_from_env

client = Client(**kwargs_from_env(assert_hostname=False))
...

$ eval "$(docker-machine env default)"
$ python script.py