我的问题涉及带有 SSL 和 Auth 的 Opscenter 4.0.2 和 Cassandra 2.0.4：代理无法连接。提供的答案确实有帮助，但却产生了另一个问题。
总而言之，在我启用 opscenter 和 datastax-agents 之间的 SSL 之前，一切都运行正常。我使用的是 DSE 4.0，我的配置与另一张票中的配置类似，我知道信任库会被拾取。然而，代理有时在日志中抛出以下异常：
INFO [thrift-init] 2014-03-12 12:52:08,283 Registering JMX me.prettyprint.cassandra.service_Agent Cluster:ServiceType=hector,MonitorType=hector
INFO [StompConnection receiver] 2014-03-12 12:52:08,352 Starting OS metric collectors (Linux)
INFO [StompConnection receiver] 2014-03-12 12:52:08,444 Starting Cassandra JMX metric collectors
ERROR [thrift-init] 2014-03-12 12:52:09,022 Exception in thread "thrift-init"
ERROR [thrift-init] 2014-03-12 12:52:09,023 java.lang.OutOfMemoryError: Java heap space
ERROR [thrift-init] 2014-03-12 12:52:09,023 at org.apache.thrift.transport.TFramedTransport.readFrame(TFramedTransport.java:140)
ERROR [thrift-init] 2014-03-12 12:52:09,023 at org.apache.thrift.transport.TFramedTransport.read(TFramedTransport.java:101)
ERROR [thrift-init] 2014-03-12 12:52:09,023 at org.apache.thrift.transport.TTransport.readAll(TTransport.java:84)
ERROR [thrift-init] 2014-03-12 12:52:09,023 at org.apache.thrift.protocol.TBinaryProtocol.readAll(TBinaryProtocol.java:378)
ERROR [thrift-init] 2014-03-12 12:52:09,023 at org.apache.thrift.protocol.TBinaryProtocol.readI32(TBinaryProtocol.java:297)
ERROR [thrift-init] 2014-03-12 12:52:09,023 at org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:204)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:69)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at org.apache.cassandra.thrift.Cassandra$Client.recv_describe_cluster_name(Cassandra.java:1101)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at org.apache.cassandra.thrift.Cassandra$Client.describe_cluster_name(Cassandra.java:1089)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at me.prettyprint.cassandra.service.AbstractCluster$2.execute(AbstractCluster.java:149)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at me.prettyprint.cassandra.service.AbstractCluster$2.execute(AbstractCluster.java:145)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:104)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:253)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at me.prettyprint.cassandra.service.AbstractCluster.describeClusterName(AbstractCluster.java:155)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at java.lang.reflect.Method.invoke(Method.java:606)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93)
ERROR [thrift-init] 2014-03-12 12:52:09,024 at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:298)
ERROR [thrift-init] 2014-03-12 12:52:09,025 at clj_hector.core$cluster_name.invoke(core.clj:40)
ERROR [thrift-init] 2014-03-12 12:52:09,025 at opsagent.cassandra$setup_cassandra$f__376__auto____929$fn__949.invoke(cassandra.clj:360)
ERROR [thrift-init] 2014-03-12 12:52:09,025 at opsagent.cassandra$setup_cassandra$f__376__auto____929.invoke(cassandra.clj:358)
ERROR [thrift-init] 2014-03-12 12:52:09,025 at clojure.lang.AFn.run(AFn.java:24)
ERROR [thrift-init] 2014-03-12 12:52:09,025 at java.lang.Thread.run(Thread.java:744)
就像另一张票上说的那样，为了得到实际的异常，我必须给虚拟机更多的内存（我必须设置 -Xmx1024M，因为 256MB 是不够的）：
me.prettyprint.hector.api.exceptions.HectorTransportException: org.apache.thrift.transport.TTransportException
at me.prettyprint.cassandra.service.ExceptionsTranslatorImpl.translate(ExceptionsTranslatorImpl.java:39)
at me.prettyprint.cassandra.service.AbstractCluster$2.execute(AbstractCluster.java:151)
at me.prettyprint.cassandra.service.AbstractCluster$2.execute(AbstractCluster.java:145)
at me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:104)
at me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:253)
at me.prettyprint.cassandra.service.AbstractCluster.describeClusterName(AbstractCluster.java:155)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93)
at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:298)
at clj_hector.core$cluster_name.invoke(core.clj:40)
at opsagent.cassandra$setup_cassandra$f__376__auto____929$fn__949.invoke(cassandra.clj:360)
at opsagent.cassandra$setup_cassandra$f__376__auto____929.invoke(cassandra.clj:358)
at clojure.lang.AFn.run(AFn.java:24)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.apache.thrift.transport.TTransportException
at org.apache.thrift.transport.TIOStreamTransport.read(TIOStreamTransport.java:132)
at org.apache.thrift.transport.TTransport.readAll(TTransport.java:84)
at org.apache.thrift.transport.TFramedTransport.readFrame(TFramedTransport.java:141)
at org.apache.thrift.transport.TFramedTransport.read(TFramedTransport.java:101)
at org.apache.thrift.transport.TTransport.readAll(TTransport.java:84)
at org.apache.thrift.protocol.TBinaryProtocol.readAll(TBinaryProtocol.java:378)
at org.apache.thrift.protocol.TBinaryProtocol.readI32(TBinaryProtocol.java:297)
at org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:204)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:69)
at org.apache.cassandra.thrift.Cassandra$Client.recv_describe_cluster_name(Cassandra.java:1101)
at org.apache.cassandra.thrift.Cassandra$Client.describe_cluster_name(Cassandra.java:1089)
at me.prettyprint.cassandra.service.AbstractCluster$2.execute(AbstractCluster.java:149)
... 15 more
但是，有时，一切都很顺利，所以它确实看起来像是竞争条件。我按照另一张票的唯一答案中提出的说明进行操作，并在 address.yaml 中手动配置了代理的 ssl 设置：
thrift_ssl_truststore: /etc/dse/conf/.truststore
thrift_ssl_truststore_password: XYZ
现在，ssl 部分可以工作了，但是 Hector 在尝试运行请求时出现错误：
ERROR [thrift-processor-1] 2014-03-12 03:34:42,420 Error when proccessing thrift callme.prettyprint.hector.api.exceptions.HInvalidRequestException: InvalidRequestException(why:You have not logged in)
我确实启用了内部身份验证。但是，现在代理上手动配置了 SSL 连接，似乎忽略了 opscenter 发送的凭据。
在 Cassandra 中启用内部身份验证/授权的同时，是否有适当的解决方案使 SSL 通信与代理一起工作？
答案1
不幸的是，导致第一个问题的相同错误也可能导致身份验证详细信息无法正确设置。不过，您也可以在 address.yaml 中指定它们。
thrift_user: <username>
thrift_pass: <password>