Issue

• Stopped showing metrics for all A-MQ queues
• Stopped receiving any alerts due to metrics not collected
• Metrics are not being stored by the storage node
• Storage client subsystem wasn't initialized

• Server log contains the following warning:

  WARN  [org.rhq.enterprise.server.storage.StorageClientManagerBean] (pool-7-thread-1) Storage client subsystem wasn't initialized. The RHQ server will be set to MAINTENANCE mode. Please verify  that the storage cluster is operational.: java.lang.RuntimeException: Authentication error on host jboss-on-storage-01.example.com/192.168.5.50: org.apache.cassandra.exceptions.UnavailableException: Cannot achieve consistency level ONE
      at org.rhq.enterprise.server.storage.StorageClientManagerBean.checkSchemaCompability(StorageClientManagerBean.java:257) [rhq-server.jar:4.9.0.JON320GA]
      at org.rhq.enterprise.server.storage.StorageClientManagerBean.createSession(StorageClientManagerBean.java:341) [rhq-server.jar:4.9.0.JON320GA]
      at org.rhq.enterprise.server.storage.StorageClientManagerBean.init(StorageClientManagerBean.java:154) [rhq-server.jar:4.9.0.JON320GA]
      ...
      at org.rhq.enterprise.server.storage.StorageClientManagerBean$$$view133.init(Unknown Source) [rhq-server.jar:4.9.0.JON320GA]
      at org.rhq.enterprise.server.core.StartupBean.initStorageClient(StartupBean.java:485) [rhq-server.jar:4.9.0.JON320GA]
      at org.rhq.enterprise.server.core.StartupBean.init(StartupBean.java:200) [rhq-server.jar:4.9.0.JON320GA]
      ...
  Caused by: com.datastax.driver.core.exceptions.AuthenticationException: Authentication error on host jboss-on-storage-01.example.com/192.168.5.50: org.apache.cassandra.exceptions.UnavailableException: Cannot achieve consistency level ONE
      at com.datastax.driver.core.Connection.initializeTransport(Connection.java:168) [cassandra-driver-core-1.0.2.jar:]
      at com.datastax.driver.core.Connection.<init>(Connection.java:129) [cassandra-driver-core-1.0.2.jar:]
      at com.datastax.driver.core.Connection.<init>(Connection.java:56) [cassandra-driver-core-1.0.2.jar:]
      at com.datastax.driver.core.Connection$Factory.open(Connection.java:412) [cassandra-driver-core-1.0.2.jar:]
      at com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:205) [cassandra-driver-core-1.0.2.jar:]
      ...
      at org.rhq.cassandra.util.ClusterBuilder.build(ClusterBuilder.java:130) [rhq-cassandra-util-4.9.0.JON320GA.jar:4.9.0.JON320GA]
      at org.rhq.cassandra.schema.SessionManager.initSession(SessionManager.java:33) [rhq-cassandra-schema-4.9.0.JON320GA.jar:4.9.0.JON320GA]
      at org.rhq.cassandra.schema.AbstractManager.initClusterSession(AbstractManager.java:100) [rhq-cassandra-schema-4.9.0.JON320GA.jar:4.9.0.JON320GA]
      at org.rhq.cassandra.schema.AbstractManager.initClusterSession(AbstractManager.java:90) [rhq-cassandra-schema-4.9.0.JON320GA.jar:4.9.0.JON320GA]
      at org.rhq.cassandra.schema.VersionManager.checkCompatibility(VersionManager.java:257) [rhq-cassandra-schema-4.9.0.JON320GA.jar:4.9.0.JON320GA]
      at org.rhq.cassandra.schema.SchemaManager.checkCompatibility(SchemaManager.java:112) [rhq-cassandra-schema-4.9.0.JON320GA.jar:4.9.0.JON320GA]
      at org.rhq.enterprise.server.storage.StorageClientManagerBean.checkSchemaCompability(StorageClientManagerBean.java:253) [rhq-server.jar:4.9.0.JON320GA]
      ... 149 more