Java jconsole jmx连接失败

Question

我正在尝试将jconsole连接到由以下方法调用的jvm:

java \
-Djava.util.logging.config.file=./logging.properties \
-Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.authenticate=false \
-Dcom.sun.management.jmxremote.port=12700 \
-cp . Sleep

然后我尝试启动jconsole:

jconsole -J-Djava.util.logging.config.file=./logging.properties

loggin.properties文件包括:

sun.rmi.level=FINEST

打开到端口12700的套接字后,rmi似乎尝试在另一个端口上建立连接:

FINER: [javax.management.remote.rmi.RMIConnector: jmxServiceURL=service:jmx:rmi:///jndi/rmi://10.40.243.12:12700/jmxrmi] connecting...
Jan 5, 2012 2:30:42 PM RMIConnector connect
FINER: [javax.management.remote.rmi.RMIConnector: jmxServiceURL=service:jmx:rmi:///jndi/rmi://10.40.243.12:12700/jmxrmi] finding stub...
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPEndpoint <clinit>
FINE: JConsole.addHost: localHostKnown = true, localHost = 10.206.6.59
Jan 5, 2012 2:30:43 PM sun.rmi.server.UnicastRef newCall
FINE: JConsole.addHost: get connection
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPTransport <init>
FINE: JConsole.addHost: Version = 2, ep = [10.206.6.59:0]
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPEndpoint getLocalEndpoint
FINE: JConsole.addHost: created local endpoint for socket factory null on port 0
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINE: JConsole.addHost: create connection
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPEndpoint newSocket
FINER: JConsole.addHost: opening socket to [10.40.243.12:12700]
Jan 5, 2012 2:30:43 PM sun.rmi.transport.proxy.RMIMasterSocketFactory createSocket
FINE: JConsole.addHost: host: 10.40.243.12, port: 12700
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINER: JConsole.addHost: server suggested 10.206.6.59:12306
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINER: JConsole.addHost: using 10.206.6.59:0
Jan 5, 2012 2:30:43 PM sun.rmi.server.UnicastRef newCall
FINER: JConsole.addHost: create call context
Jan 5, 2012 2:30:43 PM sun.rmi.server.UnicastRef logClientCall
FINER: JConsole.addHost: outbound call: [endpoint:[10.40.243.12:12700](remote),objID:[0:0:0, 0]] : sun.rmi.registry.RegistryImpl_Stub[0:0:0, 0]: java.rmi.Remote lookup(java.lang.String)
Jan 5, 2012 2:30:43 PM sun.rmi.transport.StreamRemoteCall <init>
FINER: JConsole.addHost: write remote call header...
Jan 5, 2012 2:30:43 PM sun.rmi.transport.StreamRemoteCall getOutputStream
FINER: JConsole.addHost: getting output stream
Jan 5, 2012 2:30:43 PM sun.rmi.server.UnicastRef invoke
FINER: JConsole.addHost: execute call
Jan 5, 2012 2:30:43 PM sun.rmi.transport.StreamRemoteCall getInputStream
FINER: JConsole.addHost: getting input stream
Jan 5, 2012 2:30:43 PM sun.rmi.server.LoaderHandler loadClass
FINE: JConsole.addHost: name = "javax.management.remote.rmi.RMIServerImpl_Stub", codebase = "", defaultLoader = sun.misc.Launcher$AppClassLoader@a39137
Jan 5, 2012 2:30:43 PM sun.rmi.server.LoaderHandler loadClass
FINER: JConsole.addHost: class "javax.management.remote.rmi.RMIServerImpl_Stub" found via defaultLoader, defined by null
Jan 5, 2012 2:30:43 PM sun.rmi.server.LoaderHandler loadClass
FINE: JConsole.addHost: name = "java.rmi.server.RemoteStub", codebase = "", defaultLoader = sun.misc.Launcher$AppClassLoader@a39137
Jan 5, 2012 2:30:43 PM sun.rmi.server.LoaderHandler loadClass
FINER: JConsole.addHost: class "java.rmi.server.RemoteStub" found via defaultLoader, defined by null
Jan 5, 2012 2:30:43 PM sun.rmi.server.LoaderHandler loadClass
FINE: JConsole.addHost: name = "java.rmi.server.RemoteObject", codebase = "", defaultLoader = sun.misc.Launcher$AppClassLoader@a39137
Jan 5, 2012 2:30:43 PM sun.rmi.server.LoaderHandler loadClass
FINER: JConsole.addHost: class "java.rmi.server.RemoteObject" found via defaultLoader, defined by null
Jan 5, 2012 2:30:43 PM sun.rmi.server.UnicastRef done
FINE: JConsole.addHost: free connection (reuse = true)
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPChannel free
FINE: JConsole.addHost: reuse connection
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPChannel free
FINE: JConsole.addHost: create reaper
Jan 5, 2012 2:30:43 PM sun.rmi.server.UnicastRef newCall
FINE: JConsole.addHost: get connection
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPChannel createConnection
FINE: JConsole.addHost: create connection
Jan 5, 2012 2:30:43 PM sun.rmi.transport.tcp.TCPEndpoint newSocket
FINER: JConsole.addHost: opening socket to [tdiap12:41096]
Jan 5, 2012 2:30:43 PM sun.rmi.transport.proxy.RMIMasterSocketFactory createSocket
FINE: JConsole.addHost: host: tdiap12, port: 41096

第一次连接尝试成功,因为在远程服务器上,我可以看到ESTABLISHED连接.

wse2tst@tdiap12:~> netstat -a | grep 12700
tcp        0      0 *:12700                     *:*                         LISTEN      
tcp        0      0 tdiap12.vgcar.net:12700     per-00c0016253a2.vgca:12252 ESTABLISHED 

数据包跟踪也表示连接成功.

端口41096的第二个连接超时,jconsole应用程序报告"连接失败"并终止第一个连接.为什么要尝试第二次连接？有没有办法为第二个连接指定端口？目标服务器受到严格控制,其他端口被防火墙规则阻止.在多次连接尝试时,第二个端口将更改为不同的随机值.

谢谢你的帮助,史蒂夫

Answer 1

与使用手动编码代理相比,新的更好的解决方案是使用似乎在Java 7中引入的新参数:

-Dcom.sun.management.jmxremote.rmi.port=7091

所以在组合中 - 可以使用相同的端口:

-Dcom.sun.management.jmxremote.port=7091 -Dcom.sun.management.jmxremote.rmi.port=7091

解决方案在此处找到:http: //hirt.se/blog/？p = 289

Answer 2

开箱即用的JMX实现使用两个端口 - 一个用于注册表(您指定的端口),另一个用于随机选择的实际连接(!).这是一个相当大的设计缺陷,因为随机选择第二个端口会使配置防火墙变得非常困难.

但是有很多方法 - 你可以自己手动完成,或者如果你使用的是Tomcat,你可以让它为你处理它.