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From Eric-AWL <eric.vinc...@atosorigin.com>
Subject LDAP Network Connector in AMQ 5.2. JMX InstanceAlreadyExists Exception
Date Thu, 30 Jul 2009 14:13:28 GMT

Hi !

I want to connect together all my embedded brokers with rules.
Excuse-me I'm not an LDAP expert ...

I created entries in LDAP directory (dc=instances), under which I created
leaves (cn=server1, cn=server2, cn=server3, ... , cn=servern)

Then, I tell my first embedded broker (ex : server1) that it must be
connected to all the embedded brokers of the group "dc=instances". And I do
the same, for server2, server3, ... servern. It's a kind of "multicast
group" driven by LDAP directory rules.

here are the trace of the start of my embedded broker
(vm://SIBBusSupervisor-td0sib01s)

2009-07-30 13:55:51,397 [main           ] DEBUG ManagementContext             
- Probably not using JRE 1.4: mx4j.tools.naming.NamingService
2009-07-30 13:55:51,405 [main           ] INFO  BrokerService                 
- Using Persistence Adapter: MemoryPersistenceAdapter
2009-07-30 13:55:51,406 [main           ] INFO  BrokerService                 
- ActiveMQ 5.2.0 JMS Message Broker (SIBBusSupervisor-td0sib01s) is starting
2009-07-30 13:55:51,406 [main           ] INFO  BrokerService                 
- For help or more information please see: http://activemq.apache.org/
2009-07-30 13:55:51,412 [JMX connector  ] INFO  ManagementContext             
- JMX consoles can connect to
service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi
2009-07-30 13:55:51,568 [main           ] INFO  TransportServerThreadSupport  
- Listening for connections at:
tcp://td0sib01s.priv.atos.fr:61600?useLocalHost=false
2009-07-30 13:55:51,568 [main           ] INFO  TransportConnector            
- Connector instance Started
2009-07-30 13:55:51,573 [main           ] INFO  TransportServerThreadSupport  
- Listening for connections at:
tcp://td0sib01s.priv.atos.fr:61601?useLocalHost=false
2009-07-30 13:55:51,573 [main           ] INFO  TransportConnector            
- Connector busModule Started
2009-07-30 13:55:51,578 [main           ] INFO  TransportServerThreadSupport  
- Listening for connections at:
tcp://td0sib01s.priv.atos.fr:61602?useLocalHost=false
2009-07-30 13:55:51,579 [main           ] INFO  TransportConnector            
- Connector busSupervisor Started
2009-07-30 13:55:51,579 [main           ] INFO  LdapNetworkConnector          
- connecting...
2009-07-30 13:55:51,579 [main           ] DEBUG LdapNetworkConnector          
-     URI [ldap://td0sib01v.priv.atos.fr:389]
2009-07-30 13:55:51,579 [main           ] DEBUG LdapNetworkConnector          
-     login credentials [anonymous]
2009-07-30 13:55:51,610 [main           ] INFO  LdapNetworkConnector          
- searching for network connectors...
2009-07-30 13:55:51,610 [main           ] DEBUG LdapNetworkConnector          
-     base   [dc=instances-nc,dc=sib,dc=com]
2009-07-30 13:55:51,610 [main           ] DEBUG LdapNetworkConnector          
-     filter [(&(&(objectClass=ipHost)(objectClass=ipService))((cn=*)))]
2009-07-30 13:55:51,610 [main           ] DEBUG LdapNetworkConnector          
-     scope  [2]
2009-07-30 13:55:51,626 [main           ] DEBUG LdapNetworkConnector          
- retrieved UUID from SearchResult
[cn=chargebusServer-td0sib01v,dc=instances-nc,dc=sib,dc=com]
2009-07-30 13:55:51,626 [main           ] DEBUG LdapNetworkConnector          
- retrieved URI from SearchResult
[static:(tcp://td0sib01v.priv.atos.fr:61617)]
2009-07-30 13:55:51,632 [main           ] INFO  DiscoveryNetworkConnector     
- Establishing network connection between from
vm://SIBBusSupervisor-td0sib01s to tcp://td0sib01v.priv.atos.fr:61617
2009-07-30 13:55:51,686 [main           ] DEBUG VMTransportFactory            
- binding to broker: SIBBusSupervisor-td0sib01s
2009-07-30 13:55:51,686 [main           ] INFO  TransportConnector            
- Connector vm://SIBBusSupervisor-td0sib01s Started
2009-07-30 13:55:51,717 [main           ] DEBUG VMTransportFactory            
- Shutting down VM connectors for broker: SIBBusSupervisor-td0sib01s
2009-07-30 13:55:51,719 [sor-td0sib01s#1] DEBUG Transport                     
- Transport failed:
org.apache.activemq.transport.TransportDisposedIOException: Peer
(vm://SIBBusSupervisor-td0sib01s#0) disposed.
org.apache.activemq.transport.TransportDisposedIOException: Peer
(vm://SIBBusSupervisor-td0sib01s#0) disposed.
        at
org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:203)
        at
org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98)
        at
org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)
2009-07-30 13:55:51,720 [sor-td0sib01s#0] DEBUG TransportConnection           
- Stopping connection: vm://SIBBusSupervisor-td0sib01s#0
2009-07-30 13:55:51,720 [sor-td0sib01s#0] DEBUG TransportConnection           
- Stopped transport: vm://SIBBusSupervisor-td0sib01s#0
2009-07-30 13:55:51,720 [sor-td0sib01s#0] DEBUG TransportConnection           
- Connection Stopped: vm://SIBBusSupervisor-td0sib01s#0
2009-07-30 13:55:51,720 [main           ] INFO  TransportConnector            
- Connector vm://SIBBusSupervisor-td0sib01s Stopped
2009-07-30 13:55:51,720 [main           ] DEBUG TcpTransport                  
- Stopping transport tcp://null:0
2009-07-30 13:55:51,721 [main           ] WARN  DiscoveryNetworkConnector     
- Could not start network bridge between: vm://SIBBusSupervisor-td0sib01s
and: tcp://td0sib01v.priv.atos.fr:61617 due to: java.net.ConnectException:
Connection refused
2009-07-30 13:55:51,721 [main           ] DEBUG DiscoveryNetworkConnector     
- Start failure exception: java.net.ConnectException: Connection refused
.... Exception
2009-07-30 13:55:51,722 [main           ] DEBUG DemandForwardingBridge        
-  stopping SIBBusSupervisor-td0sib01s bridge to Unknown is disposed already
? false
2009-07-30 13:55:51,723 [main           ] DEBUG NetworkConnector              
- Network bridge could not be unregistered in JMX:
org.apache.activemq:BrokerName=SIBBusSupervisor-td0sib01s,Type=NetworkBridge,NetworkConnectorName=localhost,Name=null
javax.management.InstanceNotFoundException:
org.apache.activemq:BrokerName=SIBBusSupervisor-td0sib01s,Type=NetworkBridge,NetworkConnectorName=localhost,Name=null
.... Exception
2009-07-30 13:55:51,725 [NetworkBridge  ] DEBUG DemandForwardingBridge        
- Caught exception sending shutdown
org.apache.activemq.transport.TransportDisposedIOException: Transport
disposed.
.... Exception
2009-07-30 13:55:51,725 [main           ] INFO  DemandForwardingBridge        
- SIBBusSupervisor-td0sib01s bridge to Unknown stopped
2009-07-30 13:55:51,726 [main           ] INFO  NetworkConnector              
- Network Connector localhost Started
2009-07-30 13:55:51,726 [main           ] INFO  LdapNetworkConnector          
- connector added with URI [static:(tcp://td0sib01v.priv.atos.fr:61617)]
2009-07-30 13:55:51,726 [main           ] DEBUG LdapNetworkConnector          
- retrieved UUID from SearchResult
[cn=chargebusClient-td0sib01v,dc=instances-nc,dc=sib,dc=com]
2009-07-30 13:55:51,726 [main           ] DEBUG LdapNetworkConnector          
- retrieved URI from SearchResult
[static:(tcp://td0sib01v.priv.atos.fr:61616)]
2009-07-30 13:55:51,727 [0, empty queue]] DEBUG SimpleDiscoveryAgent          
- Failure occured soon after the discovery event was generated.  It will be
clasified as a connection failure:
org.apache.activemq.transport.discovery.simple.SimpleDiscoveryAgent$SimpleDiscoveryEvent@449fea8a
2009-07-30 13:55:51,727 [0, empty queue]] DEBUG SimpleDiscoveryAgent          
- Waiting 1000 ms before attepting to reconnect.
2009-07-30 13:55:51,728 [main           ] ERROR BrokerService                 
- Failed to start ActiveMQ JMS Message Broker. Reason: java.io.IOException:
Network Connector could not be registered in JMX:
org.apache.activemq:BrokerName=SIBBusSupervisor-td0sib01s,Type=NetworkConnector,NetworkConnectorName=localhost
java.io.IOException: Network Connector could not be registered in JMX:
org.apache.activemq:BrokerName=SIBBusSupervisor-td0sib01s,Type=NetworkConnector,NetworkConnectorName=localhost
... Exception
Caused by: javax.management.InstanceAlreadyExistsException:
org.apache.activemq:BrokerName=SIBBusSupervisor-td0sib01s,Type=NetworkConnector,NetworkConnectorName=localhost...
Exception
2009-07-30 13:55:51,728 [main           ] INFO  BrokerService                 
- ActiveMQ Message Broker (SIBBusSupervisor-td0sib01s, null) is shutting
down
2009-07-30 13:55:51,729 [main           ] INFO  LdapNetworkConnector          
- stopping context...
2009-07-30 13:55:51,729 [main           ] INFO  NetworkConnector              
- Network Connector localhost Stopped
2009-07-30 13:55:51,729 [main           ] INFO  NetworkConnector              
- Network Connector localhost Stopped
2009-07-30 13:55:53,569 [main           ] INFO  TransportConnector            
- Connector instance Stopped
2009-07-30 13:55:53,574 [main           ] INFO  TransportConnector            
- Connector busModule Stopped
2009-07-30 13:55:53,579 [main           ] INFO  TransportConnector            
- Connector busSupervisor Stopped
2009-07-30 13:55:53,582 [main           ] INFO  BrokerService                 
- ActiveMQ JMS Message Broker (SIBBusSupervisor-td0sib01s, null) stopped

It seems that, all non established LDAP connector have the same name
"localhost" instead of the "iphost" value. As soon as 2 non established
connection are tried. the second one finishes with a JMX
InstanceAlreadyExists exception.

Eric-AWL
-- 
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