1.Configure the file cassandra.yaml

　　set authenticator: PasswordAuthenticator

　　the default value of authenticator is AllowAllAuthenticator

2.Loggin by the default user cassandra ,if you didn't create the user before,it will create a default user cassandra ,and the password is cassandra

　　use the cqlsh

　　./cqlsh 192.168.1.201 -u cassandra

　　Password:cassandra

3.Update the replication of the system_auth

　　ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'SimpleStrategy', 'replication_factor' : 3};

4.Create a new user

　　CREATE USER myusername WITH PASSWORD 'mypassword' SUPERUSER ;

 

Now , you can use the new user information loggin for cassandra.