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Client('127.0.0.1:8786') fails ConnectionRefusedError

See original GitHub issue

dask = 2.8.1 distributed = 2.8.1 os = ManjaroLinux 18.1.3 python = 3.7.3 (conda-forge)

from dask.distributed import Client
Client('127.0.0.1:8786')

fails with

Traceback (most recent call last):
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/comm/core.py", line 222, in connect
    _raise(error)
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/comm/core.py", line 205, in _raise
    raise IOError(msg)
OSError: Timed out trying to connect to 'tcp://127.0.0.1:8786' after 10 s: in <distributed.comm.tcp.TCPConnector object at 0x7f87b55c0b70>: ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/client.py", line 726, in __init__
    self.start(timeout=timeout)
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/client.py", line 891, in start
    sync(self.loop, self._start, **kwargs)
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/utils.py", line 334, in sync
    raise exc.with_traceback(tb)
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/utils.py", line 318, in f
    result[0] = yield future
  File "/.../miniconda3/.../lib/python3.7/site-packages/tornado/gen.py", line 735, in run
    value = future.result()
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/client.py", line 984, in _start
    await self._ensure_connected(timeout=timeout)
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/client.py", line 1041, in _ensure_connected
    connection_args=self.connection_args,
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/comm/core.py", line 231, in connect
    _raise(error)
  File "/.../miniconda3/.../lib/python3.7/site-packages/distributed/comm/core.py", line 205, in _raise
    raise IOError(msg)
OSError: Timed out trying to connect to 'tcp://127.0.0.1:8786' after 10 s: Timed out trying to connect to 'tcp://127.0.0.1:8786' after 10 s: in <distributed.comm.tcp.TCPConnector object at 0x7f87b55c0b70>: ConnectionRefusedError: [Errno 111] Connection refused

Issue Analytics

State:
Created 4 years ago
Comments:6 (3 by maintainers)

Top GitHub Comments

3reactions

mgsnunocommented, Nov 28, 2019

Ahh. Now I see. I meant this: https://distributed.dask.org/en/latest/client.html

And now reading better I see that: After we setup a cluster, we initialize a Client. My bad.

I was using LocalCluster() in the beginning but then I started to get some weird problems and noticed that Client() was calling LocalCluster with some arguments, hence started to use Client.

This was never an issue, sorry for the entropy.

0reactions

jacobtomlinsoncommented, Nov 28, 2019

Could you share the documentation page that mention this? If you specify the address of the cluster the assumption is that you are connecting to an existing cluster.

If you want to create your own cluster with your own settings I recommend looking at LocalCluster.

>>> from distributed import Client, LocalCluster
>>> cluster = LocalCluster()  # You can pass in arguments here 
LocalCluster("127.0.0.1:8786", workers=8, nthreads=8)
>>> client = Client(cluster)
<Client: scheduler=127.0.0.1:8786 processes=8 cores=8>