eccezione ActiveMQ quando si arresta

Question

Configurazione: Redhat 5.3, Sun Java 1.6.31, ActiveMQ 5.4.2

Sto diventando un'eccezione ogni volta mi fermo activemq ($> servizio di arresto ActiveMQ)

ACTIVEMQ_HOME: /opt/apache/apache-activemq-5.4.2 
ACTIVEMQ_BASE: /opt/apache/apache-activemq-5.4.2 
Connecting to JMX URL: service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi 
ERROR: java.lang.RuntimeException: Failed to execute stop task. Reason: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: 
    java.net.ConnectException: Connection refused] 
java.lang.RuntimeException: Failed to execute stop task. Reason: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: 
    java.net.ConnectException: Connection refused] 
    at org.apache.activemq.console.command.ShutdownCommand.runTask(ShutdownCommand.java:107) 
    at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) 
    at org.apache.activemq.console.command.AbstractJmxCommand.execute(AbstractJmxCommand.java:316) 
    at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:143) 
    at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) 
    at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:85) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.activemq.console.Main.runTaskClass(Main.java:251) 
    at org.apache.activemq.console.Main.main(Main.java:107) 
ERROR: java.lang.Exception: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: 
    java.net.ConnectException: Connection refused] 
java.lang.Exception: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: 
    java.net.ConnectException: Connection refused] 
    at org.apache.activemq.console.command.ShutdownCommand.runTask(ShutdownCommand.java:108) 
    at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) 
    at org.apache.activemq.console.command.AbstractJmxCommand.execute(AbstractJmxCommand.java:316) 
    at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:143) 
    at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) 
    at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:85) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.activemq.console.Main.runTaskClass(Main.java:251) 
    at org.apache.activemq.console.Main.main(Main.java:107) 
Caused by: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: 
    java.net.ConnectException: Connection refused] 
    at javax.management.remote.rmi.RMIConnector.connect(Unknown Source) 
    at javax.management.remote.JMXConnectorFactory.connect(Unknown Source) 
    at javax.management.remote.JMXConnectorFactory.connect(Unknown Source) 
    at org.apache.activemq.console.command.AbstractJmxCommand.createJmxConnector(AbstractJmxCommand.java:214) 
    at org.apache.activemq.console.command.AbstractJmxCommand.createJmxConnection(AbstractJmxCommand.java:237) 
    at org.apache.activemq.console.command.ShutdownCommand.runTask(ShutdownCommand.java:71) 
    ... 11 more 
Caused by: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: 
    java.net.ConnectException: Connection refused] 
    at com.sun.jndi.rmi.registry.RegistryContext.lookup(Unknown Source) 
    at com.sun.jndi.toolkit.url.GenericURLContext.lookup(Unknown Source) 
    at javax.naming.InitialContext.lookup(Unknown Source) 
    at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(Unknown Source) 
    at javax.management.remote.rmi.RMIConnector.findRMIServer(Unknown Source) 
    ... 17 more 
Caused by: java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: 
    java.net.ConnectException: Connection refused 
    at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source) 
    at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source) 
    at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source) 
    at sun.rmi.server.UnicastRef.newCall(Unknown Source) 
    at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source) 
    ... 22 more 
Caused by: java.net.ConnectException: Connection refused 
    at java.net.PlainSocketImpl.socketConnect(Native Method) 
    at java.net.PlainSocketImpl.doConnect(Unknown Source) 
    at java.net.PlainSocketImpl.connectToAddress(Unknown Source) 
    at java.net.PlainSocketImpl.connect(Unknown Source) 
    at java.net.SocksSocketImpl.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at java.net.Socket.<init>(Unknown Source) 
    at java.net.Socket.<init>(Unknown Source) 
    at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown Source) 
    at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source) 
    ... 27 more 

Il processo muore ma non con grazia. Eventuali suggerimenti?

Answer 1

Ho trovato una soluzione, ma non sono sicuro che risolva il problema di root. Una volta che ActiveMQ ha iniziato ho controllato per vedere se la porta 1099 è in realtà aperta con il seguente comando:

$> netstat -lptun | grep 1099 

Questo comando stampa nulla mostrando che la porta non è aperta (con ActiveMQ avviato). Ciò significa che anche se ActiveMQ è avviato, non sta ascoltando alcuna connessione JMX (che è come lo script tenterà di fermarlo). Dopo aver guardato in giro ho trovato questo link che mi ha portato al file {ACTIVEMQ_HOME} /conf/activemq.xml. In questo file è la seguente sezione:

<!-- 
    The managementContext is used to configure how ActiveMQ is exposed in 
    JMX. By default, ActiveMQ uses the MBean server that is started by 
    the JVM. For more information, see: 

     http://activemq.apache.org/jmx.html 
--> 
<managementContext> 
    <managementContext createConnector="false"/> 
</managementContext> 

Impostazione createConnector = "true" risolti i miei problemi (questo sarà avviare il server MBean all'interno della JVM all'avvio di ActiveMQ). L'uscita shutdown appare come segue (come previsto):

... 
ACTIVEMQ_HOME: /opt/apache/apache-activemq-5.4.2 
ACTIVEMQ_BASE: /opt/apache/apache-activemq-5.4.2 
Connecting to JMX URL: service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi 
Stopping broker: localhost 
.. FINISHED 

Inoltre, dopo aver cambiato questo flag è possibile verificare se la porta JMX predefinito (1099) è aperto dopo l'inizio ActiveMQ

$> netstat -lptun | grep 1099 
tcp  0  0 :::1099      :::*      LISTEN  30033/java