【发布时间】：2014-12-04 06:16:08
【问题描述】：
我在 AWS 中以多区域配置安装了 Datastax enterprise 4.5.3 和 Opscenter 5.0.1。我试图通过在 opscenter 和代理之间启用节点到节点加密、客户端到节点加密和 ssl 来使通信尽可能安全。
启用客户端到节点加密后，代理出现问题。在 casssandra.yaml 中启用加密后，datastax 代理会抛出一个错误，指出它无法连接到集群。
cassandra.yaml 的一部分：
# enable or disable client/server encryption.
client_encryption_options:
enabled: true
keystore: /usr/share/dse/resources/dse/conf/.keystore
keystore_password: supersecret_password
# require_client_auth: false
# Set trustore and truststore_password if require_client_auth is true
truststore: /usr/share/dse/resources/dse/conf/.truststore
truststore_password: supersecret_password
# More advanced defaults below:
protocol: SSL
# algorithm: SunX509
# store_type: JKS
# cipher_suites [TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_DHE_RSA_WITH_AES_128_CBC_SHA,TLS_DHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA]
在 cassandra.yaml 中启用客户端到节点加密后，代理无法连接到集群。在 /var/log/datastax-agent/agent.log 中，我反复看到这个错误：
ERROR [pdp-loader] 2014-11-10 20:06:18,902 Unable to connect to Cassandra:
me.prettyprint.hector.api.exceptions.HectorException: All host pools marked down. Retry burden pushed out to client.
at me.prettyprint.cassandra.connection.HConnectionManager.getClientFromLBPolicy(HConnectionManager.java:390)
at me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:244)
at me.prettyprint.cassandra.service.AbstractCluster.describePartitioner(AbstractCluster.java:255)
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$partitioner.invoke(core.clj:42)
at opsagent.cassandra$load_pdps_with_retry$fn__1066.invoke(cassandra.clj:211)
at opsagent.cassandra$load_pdps_with_retry.invoke(cassandra.clj:210)
at opsagent.cassandra$setup_cassandra$f__388__auto____1094$fn__1095$f__388__auto____1102.invoke(cassandra.clj:357)
at clojure.lang.AFn.run(AFn.java:24)
at java.lang.Thread.run(Thread.java:745)
INFO [Hector.me.prettyprint.cassandra.connection.CassandraHostRetryService-1] 2014-11-10 20:06:28,700 Not checking that 54.86.178.77(54.86.178.77):9160 is a member of the ring since there are no live hosts
WARN [Hector.me.prettyprint.cassandra.connection.CassandraHostRetryService-1] 2014-11-10 20:06:28,701 Downed 54.86.178.77(54.86.178.77):9160 host still appears to be down: Unable to open transport to 54.86.178.77(54.86.178.77):9160 , java.net.ConnectException: Connection refused
【问题讨论】：
标签： datastax-enterprise datastax opscenter