[bwong@pgdev2-vm ~]$ cassandra-cli -u cassandra -pw ????? -h cassa001 -p 9160
Column Family assumptions read from /net/homedirs/bwong/.cassandra/assumptions.json
Exception during authentication to the cassandra node, Verify the keyspace exists, and that you are using the correct credentials.
Welcome to Cassandra CLI version 1.2.9

Type 'help;' or '?' for help.
Type 'quit;' or 'exit;' to quit.

[default@unknown] quit