Docker Error while fetching server API version

I’m playing with OpenAI’s universe, and when I click run, it comes up with an error.

Current script:

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  • import gym
    import universe  # register the universe environments
    
    env = gym.make('flashgames.CoasterRacer-v0')
    observation_n = env.reset()
    

    If I remove the observation_n variable, it won’t come up with an error. With the observation_n it will cause an error. Right now I’m running docker-py (1.10.3).

    [2016-12-11 18:32:12,128] Making new env: flashgames.CoasterRacer-v0
    [2016-12-11 18:32:12,132] Writing logs to file: /tmp/universe-10547.log
    Traceback (most recent call last):
      File "/home/ubuntu/workspace/gim.py", line 5, in <module>
        observation_n = env.reset()
      File "/home/ubuntu/workspace/gym/gym/core.py", line 137, in reset
        self.configure()
      File "/home/ubuntu/workspace/gym/gym/core.py", line 246, in configure
        self._configure(*args, **kwargs)
      File "/home/ubuntu/workspace/universe/universe/vectorized/core.py", line 57, in _configure
        super(Wrapper, self)._configure(**kwargs)
      File "/home/ubuntu/workspace/gym/gym/core.py", line 350, in _configure
        return self.env.configure(*args, **kwargs)
      File "/home/ubuntu/workspace/gym/gym/core.py", line 246, in configure
        self._configure(*args, **kwargs)
      File "/home/ubuntu/workspace/universe/universe/wrappers/render.py", line 18, in _configure
        super(Render, self)._configure(**kwargs)
      File "/home/ubuntu/workspace/universe/universe/vectorized/core.py", line 57, in _configure
        super(Wrapper, self)._configure(**kwargs)
      File "/home/ubuntu/workspace/gym/gym/core.py", line 350, in _configure
        return self.env.configure(*args, **kwargs)
      File "/home/ubuntu/workspace/gym/gym/core.py", line 246, in configure
        self._configure(*args, **kwargs)
      File "/home/ubuntu/workspace/universe/universe/wrappers/throttle.py", line 27, in _configure
        super(Throttle, self)._configure(**kwargs)
      File "/home/ubuntu/workspace/universe/universe/vectorized/core.py", line 57, in _configure
        super(Wrapper, self)._configure(**kwargs)
      File "/home/ubuntu/workspace/gym/gym/core.py", line 350, in _configure
      File "/home/ubuntu/workspace/gym/gym/core.py", line 246, in configure
        self._configure(*args, **kwargs)
      File "/home/ubuntu/workspace/universe/universe/envs/vnc_env.py", line 192, in _configure
        api_key=api_key,
      File "/home/ubuntu/workspace/universe/universe/remotes/build.py", line 19, in build
        n=n,
      File "/home/ubuntu/workspace/universe/universe/remotes/docker_remote.py", line 43, in __init__
        self._assigner = PortAssigner(reuse=reuse)
      File "/home/ubuntu/workspace/universe/universe/remotes/docker_remote.py", line 149, in __init__
        self.client, self.info = get_client()
      File "/home/ubuntu/workspace/universe/universe/remotes/docker_remote.py", line 143, in get_client
        return docker.Client(base_url=host, version=client_api_version), info
      File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 99, in __init__
        self._version = self._retrieve_server_version()
      File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 124, in _retrieve_server_version
        'Error while fetching server API version: {0}'.format(e)
    docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', error(2, 'No such file or directory'))
    

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  • One Solution collect form web for “Docker Error while fetching server API version”

    In your program add a line after gym.make as follows,

    env = gym.make('flashgames.DuskDrive-v0')
    env.configure(remotes="vnc://localhost:5900+15901")
    observation_n = env.reset()
    

    save it.
    Now open two terminal windows. In first type,

    sudo docker run -p 5900:5900 -p 15901:15901 --privileged --cap-add SYS_ADMIN --ipc host quay.io/openai/universe.flashgames:0.20.7
    

    Some gibberish will start appearing. Now till that thing is going on, in the next window you open your anaconda environment using command,

    source activate universe
    

    Then you run your python code as, python “path_name”/”program_name”.py

    For complete guide please refer to this link –

    https://alliseesolutions.wordpress.com/2016/12/08/openai-universe-installation-guide-ubuntu-16-04/
    https://medium.com/@alexbhandari/openai-universe-getting-started-on-mac-52d601ef9161#.p8njfuqff

    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.