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From Björn Hachmann <>
Subject Unable to connect via cqlsh or datastax-driver
Date Tue, 05 May 2015 15:20:22 GMT

I am unable to connect to the nodes of our second datacenter, not even from

The error message I receive is:

Connection error: ('Unable to connect to any servers', {'...':
OperationTimedOut('errors=None, last_host=None',)})

I already checked some things:

   - The node starts to listen for cql clients on the expected port
   (extract from the log):
   Starting listening for CQL clients on .../
   - The port is open and accepts connections via telnet.
   - nodetool info works and returns:
   Gossip active          : true
   Thrift active          : true
   Native Transport active: true
   - nodetool netstats:
   Mode: NORMAL
   - nodetool statusbinary

Any help would be highly appreciated! Thank you very much.

Kind regards

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