python driver - Getting timeout error when trying to connect to cassandra

[Nikhil Apte]

I have installed the python driver successfully but cannot connect to the cassandra server.

Fails with following error - 

  File "cassandra\cluster.py", line 882, in cassandra.cluster.Cluster.connect (cassandra/cluster.c:12253)

  File "cassandra\cluster.py", line 908, in cassandra.cluster.Cluster.connect (cassandra/cluster.c:12073)

  File "cassandra\cluster.py", line 902, in cassandra.cluster.Cluster.connect (cassandra/cluster.c:11952)

  File "cassandra\cluster.py", line 2128, in cassandra.cluster.ControlConnection.connect (cassandra/cluster.c:37198)

  File "cassandra\cluster.py", line 2165, in cassandra.cluster.ControlConnection._reconnect_internal (cassandra/cluster.c:38095)

cassandra.cluster.NoHostAvailable: ('Unable to connect to any servers', {'<host_ip>': OperationTimedOut('errors=None, last_host=None',)})

I tried using the Java driver and that worked perfectly fine. The connection settings (host/port) are the same in both)

[Alan Boudreault]

Hello Nikhil,

I´m afraid we will need more information to help you. The default connect_timeout is 5 seconds.So, your server doesn´t seem to respond within that timeout value. A few things to check:

- Try to increase that timeout value and see if it fixes your issue: https://datastax.github.io/python-driver/api/cassandra/cluster.html#cassandra.cluster.Cluster.connect_timeout

- How long does it take for the Java driver to connect? I would expect that to be near 5 seconds.

Let me know how it goes.

Regards,

Alan

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Alan Boudreault

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[Nikhil Apte]

Thanks for the quick response. Will try out the things you have mentioned and will let you know.

-Nikhil