遵循this程序启用DSE身份验证和授权。
cqlsh能够登录超级用户，但无法登录普通用户（超级用户= false）。
以下是尝试登录普通用户时的错误：
Connection error: ('Unable to connect to any servers', {'127.0.0.1': AuthenticationFailed('Failed to authenticate to 127.0.0.1: Error from server: code=0100 [Bad credentials] message="Failed to login. Please re-try."',)})
它还能够登录cassandra超级用户。
以下是system_auth密钥空间的说明：
CREATE KEYSPACE system_auth WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '1'} AND durable_writes = true;
cassandra@cqlsh> show version;
[cqlsh 5.0.1 | Cassandra 3.0.9.1346 | DSE 5.0.3 | CQL spec 3.4.0 | Native protocol v4]
cassandra@cqlsh>
我在我的ubuntu盒子上本地运行cassandra。请帮我解决错误。
编辑 - 03/24/2017
在1个节点（Ubuntu）上运行Cassandra。 DSE，Cassandra，CQL的版本细节都在上面。
$ nodetool status
Datacenter: dc1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host ID Rack
UN 127.0.0.1 1.3 MB 32 ? aaa1b7c1-6049-4a08-ad3e-3697a0e30e10 rack1
我根据文档创建了这样的用户：
cassandra@cqlsh> create role krishna with password='krishna' and login=true;
cassandra@cqlsh> list roles **(This gave me expected output, krishna is not superuser)**
cassandra@cqlsh> login krishna
Password:
'Unable to connect to any servers', {'127.0.0.1': AuthenticationFailed('Failed to authenticate to 127.0.0.1: Error from server: code=0100 [Bad credentials] message="Failed to login. Please re-try."',)}
我也尝试使用cqlsh登录：
$ cqlsh -u krishna -p krishna
Connection error: ('Unable to connect to any servers', {'127.0.0.1': AuthenticationFailed('Failed to authenticate to 127.0.0.1: Error from server: code=0100 [Bad credentials] message="Failed to login. Please re-try."',)})
创建超级用户时同样有效：
cassandra@cqlsh> create role superuser with password='superuser' and login=true and superuser=true;
cassandra@cqlsh> login superuser
Password:
superuser@cqlsh> **(Logged in correctly)**
还有cqlsh：
$ cqlsh -u superuser -p superuser
Connected to Test Cluster at 127.0.0.1:9042.
[cqlsh 5.0.1 | Cassandra 3.0.9.1346 | DSE 5.0.3 | CQL spec 3.4.0 | Native protocol v4]
Use HELP for help.
superuser@cqlsh