jmx can't connect to localhost

Question

Trying to connect a simple JMX monitoring. Managed application and monitoring tool are on the same server. When trying to connect an error

00:30:55,610 FATAL http-8080-6 SiteListener:makeJmxConnection:99 - 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 com.m.a.s.SiteListener.makeJmxConnection(SiteListener.java:93) at com.m.a.s.SiteListener.getMBeanConnect(SiteListener.java:73) at com.m.a.s.SiteListener.contextInitialized(SiteListener.java:51) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467) at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3228) at org.apache.catalina.manager.ManagerServlet.reload(ManagerServlet.java:918) at org.apache.catalina.manager.HTMLManagerServlet.reload(HTMLManagerServlet.java:545) at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:121) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Unknown Source) 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) ... 26 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) ... 31 more Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) at java.net.AbstractPlainSocketImpl.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.(Unknown Source) at java.net.Socket.(Unknown Source) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown Source) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source) ... 36 more

On the server, open access so

 private static void startJmxServer() throws MalformedURLException, IOException {

        Map<String, Object> props = new HashMap<String, Object>();
        RemouteAuthentificator auth = new RemouteAuthentificator();
        props.put("jmx.remote.authenticator", auth);

        JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:22414/MServer");
        MBeanServer mbeanSrv = ManagementFactory.getPlatformMBeanServer();
        JMXConnectorServer server = JMXConnectorServerFactory.newJMXConnectorServer(url, props, mbeanSrv);
        server.start();
        log.info("JMX RMI Agent has been bound on address: " + url);
    }

In an administrative tool under Tomcat, trying to connect

static private MBeanServerConnection makeJmxConnection(String objectName)
    {
    // objectName = “MServer:name=Settings”;
        MBeanServerConnection mConnect = null;
        try
        {
            String[] credentials = new String[] {"server", "password"};
            Map<String, String[]> props = new HashMap<String, String[]>();
            props.put("jmx.remote.credentials", credentials);

            JMXServiceURL url = new JMXServiceURL(“service:jmx:rmi:///jndi/rmi://localhost:22414/MServer”);
            jmxc = JMXConnectorFactory.connect(url, props);
            mConnect = jmxc.getMBeanServerConnection();
            mbeanName = new ObjectName(objectName);
        }
        catch(Exception e)
        {
            log.fatal("", e);
        }

        return mConnect;
    }

And tried to connect via external ip. Result is the same.

Answer 1

i don't see where you set your put number.where is you this short of code

String host = "localhost";  // or some x.y.z
int port = setyourPortNumber;
String url = "service:jmx:rmi:///jndi/rmi://localhost:22414/MServer"; // where you get services

i wish it help you to get idea