When trying to connect to cassandra via cqlsh client, I've offen had the following timeout errors:
Connection error: ('Unable to connect to any servers', {'1xx.xx.xx.xx': OperationTimedOut('errors=None, last_host=None',)})
Lots of blog posts out there recommend editing the:
~./cassandra/cqlshr...
Continue reading... Connection error: Unable to connect to any servers OperationTimedOut