python - tornado/graphlab 无法在 docker 中分配请求的地址

Question

运行 gl.canvas.set_target('ipynb') 会在 docker 容器中抛出以下异常。

即使使用 gl.canvas.set_target('ipynb', port=28892)，其中 28892 是一个开放端口，错误仍然存​​在。

---------------------------------------------------------------------------
error                                     Traceback (most recent call last)
<ipython-input-257-3f215a521352> in <module>()
----> 1 gl.canvas.set_target('ipynb')

/opt/conda/envs/gl-env/lib/python2.7/site-packages/graphlab/canvas/utils.pyc in set_target(target, port)
    102             # and to preserve backwards compatibility/other use cases
    103             # (running a notebook exported to .py, for instance)
--> 104         _active_target = targets[target]()
    105 
    106     # track metrics on target

/opt/conda/envs/gl-env/lib/python2.7/site-packages/graphlab/canvas/target.pyc in __init__(self, port)
     25         self.state = graphlab.canvas.state.State()
     26         # TODO server is not necessary in static IPython/Jupyter Notebook
---> 27         self.server = graphlab.canvas.server.Server(self.state, port)
     28         # add data objects to left nav
     29         DataView = graphlab.canvas.views.data_objects.DataObjectsView()

/opt/conda/envs/gl-env/lib/python2.7/site-packages/graphlab/canvas/server.pyc in __init__(self, state, port)
     44 
     45         #Will raise exception if port cannot be bound
---> 46         self.__bind_socket(port)
     47 
     48     # methods

/opt/conda/envs/gl-env/lib/python2.7/site-packages/graphlab/canvas/server.pyc in __bind_socket(self, port)
     93     # Raises exception if socket cannot be bound on requested port
     94     def __bind_socket(self, port=None):
---> 95         sockets = tornado.netutil.bind_sockets(port,"localhost")
     96         self.__server.add_sockets(sockets)
     97         with self.__port_lock:

/opt/conda/envs/gl-env/lib/python2.7/site-packages/tornado/netutil.pyc in bind_sockets(port, address, family, backlog, flags, reuse_port)
    194 
    195         sock.setblocking(0)
--> 196         sock.bind(sockaddr)
    197         bound_port = sock.getsockname()[1]
    198         sock.listen(backlog)

/opt/conda/envs/gl-env/lib/python2.7/socket.pyc in meth(name, self, *args)
    226 
    227 def meth(name,self,*args):
--> 228     return getattr(self._sock,name)(*args)
    229 
    230 for _m in _socketmethods:

error: [Errno 99] Cannot assign requested address

它看起来更像是 docker/tornado 问题而不是 graphlab 问题，因为在主机中相同的命令有效。

我使用以下命令启动了我的 docker 容器:

sudo docker run -it -v /path/to/data:/root/data \
    -v ~/code/work/src:/root/src \
    -p 8888:8888 -p 28892:28892 company/graphlab \
    /bin/bash -c "source activate gl-env && jupyter notebook --notebook-dir=~/src --ip='*' --port=8888 --no-browser"

有没有办法找出这个端口以便我可以打开它或任何其他方法来解决这个问题？

Answer 1

编辑您的/etc/hosts 文件(在容器内)以仅包含本地主机的 1 个 ip 地址值为我解决了这个问题。它仅在您在运行的容器上编辑它时才有效。在构建图像时对其进行编辑并不能解决问题。

从容器启动时，我的/etc/hosts 有以下行:

127.0.0.1   localhost
::1 localhost ip6-localhost ip6-loopback

我必须将它们更改为:

127.0.0.1   localhost
::1 ip6-localhost ip6-loopback