11

配置：Redhat 5.3、Sun Java 1.6.31、ActiveMQ 5.4.2

每次我停止 activemq 时都会出现异常（$> service activemq stop）

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

该过程仍然死亡，但不是优雅的。有什么建议么？

4

1 回答 1

26

我找到了解决方法，但我不确定它是否解决了根本问题。ActiveMQ 启动后，我使用以下命令检查端口 1099 是否实际打开：

$> netstat -lptun | grep 1099

此命令不打印任何内容，表明端口未打开（已启动 ActiveMQ）。这意味着即使 ActiveMQ 已启动，它也不会侦听任何 JMX 连接（这是脚本将尝试停止它的方式）。环顾四周后，我发现这个链接将我带到{ACTIVEMQ_HOME}/conf/activemq.xml文件。在这个文件中有以下部分：

 <!-- 
     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>

设置createConnector="true"解决了我的问题（这将在 ActiveMQ 启动时启动 JVM 中的 MBean 服务器）。关机输出现在看起来像这样（如预期的那样）：

...
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

此外，更改此标志后，我可以验证默认 JMX 端口（1099）在启动 ActiveMQ 后是否打开

$> netstat -lptun | grep 1099
tcp        0      0 :::1099                     :::*                        LISTEN      30033/java
于 2012-06-13T18:14:00.897 回答