Hello,
I have setup a new EC2 instance to run cassandra on EC2, have gone through bunch of questions that don't seem to help. I am running apache-cassandra-2.1.0-rc3 I have opened port 9160, 9042 on my EC2 instance say its IP address is 1.2.3.4 Since this is single node system I haven't opened other ports as pointed in http://www.datastax.com/documentation/cassandra/2.0/cassandra/install/installAMISecurityGroup.html When I try to connect to this host using the python driver with cluster config like this: cluster = Cluster(contact_points=['1.2.3.4',], port=9160) I am getting error: File "....cluster.py", line 1649, in _reconnect_internal raise NoHostAvailable("Unable to connect to any servers", errors) cassandra.cluster.NoHostAvailable: ('Unable to connect to any servers', {'1.2.3.4': error(111, 'Connection refused')}) Any ideas on what incantation I need to have in cassandra.yml file to allow external clients to connect cassandra instance running on EC2 ? -Subodh
