CREATE KEYSPACE data WITH replication = {'class': 'NetworkTopologyStrategy',
'dc1': '3', 'dc2': '3'} AND durable_writes = true;
cqlsh> select * from system_schema.keyspaces ;
keyspace_name | durable_writes | replication
++
what is your keyspace configuration. Do you have all the keyspaces
configured for both DCs?
can you run below query from cqlsh and see if the keyspace is configured to
use both DCs
select * from system.schema_keyspaces; # if your cluster is on 2.1 or less
select * from system_schema.keyspaces
