7 Replies Latest reply on Nov 18, 2015 11:48 AM by teknopaul

java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

kobiianko May 23, 2010 4:50 AM

Hi,

when I try to access a remote JBoss5.1 server on a diffrent subnet by using the server IP I'm getting:(on the client side)

Caused by: java.rmi.UnknownHostException: Unknown host: linx50intg.abc.local; nested exception is:
    java.net.UnknownHostException: linx50intg.abc.local
    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.invoke(Unknown Source)
    at org.jnp.server.NamingServer_Stub.lookup(Unknown Source)
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:726)
    ... 30 more

If I'll add this server name (linx50intg.abc.local) to the client HOSTS file it will work, but this is not acceptable by the costumers (to make changes to all clients).

is the a way to config JBoss to work only with the IP address?

on JBoss4.0.5 the communication is on the IP address and everything is working.

I'm working with windows client and redhat5 server

1. Re: java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

jaikiran May 24, 2010 6:31 AM (in response to kobiianko)

When exactly does that error occur? And is that the complete stacktrace? If not, please post the complete stacktrace and any relevant code which triggers this error.
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2. Re: java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

kobiianko May 24, 2010 7:09 AM (in response to jaikiran)

this occur at the first look up, from the client,
using wireshark sniffer I can see that the reply from the server is to connect via hostname, did the same on jboss4.0.5 and in the packet I can see that the reply from the server is to connect via IP and everything is working.

also client connection params are:

java.naming.factory.initial     org.jnp.interfaces.NamingContextFactory
java.naming.provider.url     jnp://"+ipAddress+":1099
java.naming.factory.url.pkgs     org.jboss.naming:org.jnp.interfaces

Full Stacktrace:

2010-05-24 14:00:30 [javawsApplicationMain] ERROR login.module.AppLoginModule - Error attempting to authenticate user
com.allot.nms.admin.exception.AdminException
    at com.allot.nms.admin.client.AdminHelper.findAuthenticatedUser(AdminHelper.java:95)
    at com.allot.nms.client.ui.frm.login.module.AppLoginModule.authenticateUser(AppLoginModule.java:184)
    at com.allot.nms.client.ui.frm.login.module.AppLoginModule.login(AppLoginModule.java:144)
    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 javax.security.auth.login.LoginContext.invoke(Unknown Source)
    at javax.security.auth.login.LoginContext.access$000(Unknown Source)
    at javax.security.auth.login.LoginContext$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.login.LoginContext.invokePriv(Unknown Source)
    at javax.security.auth.login.LoginContext.login(Unknown Source)
    at com.allot.nms.client.ui.frm.login.AppLogin.attemptThreeLogins(AppLogin.java:78)
    at com.allot.nms.client.ui.frm.login.AppLogin.doAppLogin(AppLogin.java:38)
    at com.allot.nms.client.ui.frm.Controller.loginUser(Controller.java:176)
    at com.allot.nms.client.ui.frm.Controller.initGUI(Controller.java:261)
    at com.allot.nms.client.ui.main.AllotNMS.main(AllotNMS.java:60)
    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 com.sun.javaws.Launcher.executeApplication(Unknown Source)
    at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
    at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
    at com.sun.javaws.Launcher.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: com.allot.nms.common.util.ServiceLocatorException: javax.naming.CommunicationException [Root exception is java.rmi.UnknownHostException: Unknown host: linx50intg.allot.local; nested exception is:
    java.net.UnknownHostException: linx50intg.allot.local]
    at com.allot.nms.common.util.ServiceLocator.getRemoteHome(ServiceLocator.java:121)
    at com.allot.nms.admin.client.AdminHelper.findAuthenticatedUser(AdminHelper.java:88)
    ... 26 more
Caused by: javax.naming.CommunicationException [Root exception is java.rmi.UnknownHostException: Unknown host: linx50intg.allot.local; nested exception is:
    java.net.UnknownHostException: linx50intg.allot.local]
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:839)
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)
    at javax.naming.InitialContext.lookup(Unknown Source)
    at com.allot.nms.common.util.ServiceLocator.getRemoteHome(ServiceLocator.java:115)
    ... 27 more
Caused by: java.rmi.UnknownHostException: Unknown host: linx50intg.allot.local; nested exception is:
    java.net.UnknownHostException: linx50intg.allot.local
    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.invoke(Unknown Source)
    at org.jnp.server.NamingServer_Stub.lookup(Unknown Source)
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:726)
    ... 30 more
Caused by: java.net.UnknownHostException: linx50intg.allot.local
    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)
    ... 36 more
com.allot.nms.admin.exception.AdminException
    at com.allot.nms.admin.client.AdminHelper.findAuthenticatedUser(AdminHelper.java:95)
    at com.allot.nms.client.ui.frm.login.module.AppLoginModule.authenticateUser(AppLoginModule.java:184)
    at com.allot.nms.client.ui.frm.login.module.AppLoginModule.login(AppLoginModule.java:144)
    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 javax.security.auth.login.LoginContext.invoke(Unknown Source)
    at javax.security.auth.login.LoginContext.access$000(Unknown Source)
    at javax.security.auth.login.LoginContext$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.login.LoginContext.invokePriv(Unknown Source)
    at javax.security.auth.login.LoginContext.login(Unknown Source)
    at com.allot.nms.client.ui.frm.login.AppLogin.attemptThreeLogins(AppLogin.java:78)
    at com.allot.nms.client.ui.frm.login.AppLogin.doAppLogin(AppLogin.java:38)
    at com.allot.nms.client.ui.frm.Controller.loginUser(Controller.java:176)
    at com.allot.nms.client.ui.frm.Controller.initGUI(Controller.java:261)
    at com.allot.nms.client.ui.main.AllotNMS.main(AllotNMS.java:60)
    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 com.sun.javaws.Launcher.executeApplication(Unknown Source)
    at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
    at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
    at com.sun.javaws.Launcher.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: com.allot.nms.common.util.ServiceLocatorException: javax.naming.CommunicationException [Root exception is java.rmi.UnknownHostException: Unknown host: linx50intg.allot.local; nested exception is:
    java.net.UnknownHostException: linx50intg.allot.local]
    at com.allot.nms.common.util.ServiceLocator.getRemoteHome(ServiceLocator.java:121)
    at com.allot.nms.admin.client.AdminHelper.findAuthenticatedUser(AdminHelper.java:88)
    ... 26 more
Caused by: javax.naming.CommunicationException [Root exception is java.rmi.UnknownHostException: Unknown host: linx50intg.allot.local; nested exception is:
    java.net.UnknownHostException: linx50intg.allot.local]
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:839)
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)
    at javax.naming.InitialContext.lookup(Unknown Source)
    at com.allot.nms.common.util.ServiceLocator.getRemoteHome(ServiceLocator.java:115)
    ... 27 more
Caused by: java.rmi.UnknownHostException: Unknown host: linx50intg.allot.local; nested exception is:
    java.net.UnknownHostException: linx50intg.allot.local
    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.invoke(Unknown Source)
    at org.jnp.server.NamingServer_Stub.lookup(Unknown Source)
    at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:726)
    ... 30 more
Caused by: java.net.UnknownHostException: linx50intg.allot.local
    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)
    ... 36 more
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3. Re: java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

kobiianko May 25, 2010 8:38 AM (in response to kobiianko)

does anyone have any suggestion?
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4. Re: java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

kobiianko May 30, 2010 9:37 AM (in response to kobiianko)

found this: https://jira.jboss.org/browse/EJBTHREE-1935

can any of you masters help me fix this code... I'm sure that with some little guidance I can fix it.

10x
Kobi
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5. Re: java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

kobiianko Jun 7, 2010 4:53 AM (in response to kobiianko)

OK, found a possible solution to this,
You can add -Djava.rmi.server.hostname=<ip> -Dremoting.bind_by_host=false to the run script at the server
It works!!!

This forces you to hard code the IP of your sever and make sure it does not change over time.
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6. Re: java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

jaikiran Jun 8, 2010 2:10 AM (in response to kobiianko)

Good to know that you got it working. And thanks for posting the solution here.
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7. Re: java.rmi.UnknownHostException: Unknown host: linx50intg.X.local;

teknopaul Nov 18, 2015 11:48 AM (in response to kobiianko)

What if you want to call more than one remote server?
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