jrmp连接建立期间的jconsole错误嵌套异常是:java.io.EOFException

Question

我正在尝试使用jconsole监视远程进程,这是我使用的命令

jconsole -debug localhost:4080

这是我得到的堆栈跟踪

java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is: 
    java.io.EOFException
    at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:286)
    at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
    at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
    at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
    at sun.tools.jconsole.ProxyClient.checkSslConfig(ProxyClient.java:217)
    at sun.tools.jconsole.ProxyClient.<init>(ProxyClient.java:110)
    at sun.tools.jconsole.ProxyClient.getProxyClient(ProxyClient.java:463)
    at sun.tools.jconsole.JConsole$3.run(JConsole.java:510)
Caused by: java.io.EOFException
    at java.io.DataInputStream.readByte(DataInputStream.java:250)
    at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:228)

如果我将进程的pid提供给jconsole,它就能成功附加.

Answer 1

我们必须配置tomcat以允许远程进程连接到它进行监视

基本上添加了,

CATALINA_OPTS="-Djava.awt.headless=true -Xmx128M -server -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=7091 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false"

这将告诉tomcat它将从(例如)jconsole通过端口7091远程监控.

然后启动jconsole

jconsole localhost:7091

现在jconsole成功连接.