Cassandra 1.2.19

We would like to turn on Cassandra's internal security (PasswordAuthenticator 
and CassandraAuthorizer) on the ring (away from AllowAll). (Clients are already 
passing credentials in their connections.) However, I know all nodes have to be 
switched to those before the basic security objects (system_auth) are created. 
So, an outage would be required to change all the nodes, let system_auth get 
created, alter system_auth for replication strategy, create all the 
users/permissions, repair system_auth.

For DataStax, there is a TransitionalAuthorizer that allows the system_auth to 
get created, but doesn't really require passwords. So, with a double, rolling 
bounce, you can implement security with no downtime. Anything like that for 
open source? Any other ways you have activated security without downtime?



Sean R. Durity



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