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當我執行datastax-agent與version 5.2.X，但我得到了以下錯誤：爲什麼在運行'datastax-agent'時出現錯誤「身份驗證錯誤」？
INFO [main] 2016-01-20 11:56:34,917 Waiting for the config from OpsCenter
INFO [main] 2016-01-20 11:56:34,918 Attempting to determine Cassandra's broadcast address through JMX
INFO [main] 2016-01-20 11:56:34,919 Starting Stomp
INFO [main] 2016-01-20 11:56:34,919 Starting up agent communcation with OpsCenter.
INFO [Initialization] 2016-01-20 11:56:35,287 Using 122.21.0.131 as the cassandra broadcast address
INFO [Initialization] 2016-01-20 11:56:35,486 cassandra RPC address is nil
INFO [Initialization] 2016-01-20 11:56:35,487 agent RPC address is 122.21.0.131
INFO [Initialization] 2016-01-20 11:56:35,487 agent RPC broadcast address is 122.21.0.131
ERROR [clojure-agent-send-off-pool-0] 2016-01-20 11:56:35,814 Can't connect to Cassandra, authentication error, please carefully check your Auth settings, retrying soon.
ERROR [clojure-agent-send-off-pool-1] 2016-01-20 11:56:35,814 Can't connect to Cassandra, authentication error, please carefully check your Auth settings, retrying soon.
ERROR [clojure-agent-send-off-pool-0] 2016-01-20 11:56:36,859 Can't connect to Cassandra, authentication error, please carefully check your Auth settings, retrying soon.
ERROR [clojure-agent-send-off-pool-1] 2016-01-20 11:56:36,859 Can't connect to Cassandra, authentication error, please carefully check your Auth settings, retrying soon.
但我沒有找到我在哪裏可以把Cassandra的用戶名和密碼？任何建議將被認真考慮！
可以包括代理節點上的address.yaml，並從opscenterd服務器{}羣ID的.conf？此外，該節點cassandra.yaml上的rpc_address是什麼 –