problems with FrontEndLoadBalancer support in 9.0.0.CR1

[tomlux]

Hy,

I tried to get running the FrontEndLoadBalancer in Wildfly 9.0.0.CR1.

I followed the example of Stuart Douglas which was posted here:

Developer Interview (#DI 11) - Stuart Douglas (@stuartwdouglas) about WildFly9 and Undertow ~ Enterprise Software Develo…

http://www.youtube.com/embed/xa_gtRDpwyQ

stuartwdouglas/modcluster-example · GitHub

I'm getting running the backends with the deployments but I don't get running the modcluster.

I did the tests under a Windows environment.

I'm getting the error below.

Thanks for any help,

Tom

[Server:load-balancer] 07:21:43,456 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-12) MSC000001: Failed to start service jboss.undertow.filter.modcluster: org.jboss.msc.service.StartExcepti

on in service jboss.undertow.filter.modcluster: Failed to start service

[Server:load-balancer]  at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904)

[Server:load-balancer]  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

[Server:load-balancer]  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

[Server:load-balancer]  at java.lang.Thread.run(Thread.java:745)

[Server:load-balancer] Caused by: java.lang.RuntimeException: java.net.BindException: Cannot assign requested address: bind

[Server:load-balancer]  at org.wildfly.extension.undertow.filters.ModClusterService.start(ModClusterService.java:103)

[Server:load-balancer]  at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948)

[Server:load-balancer]  at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881)

[Server:load-balancer]  ... 3 more

[Server:load-balancer] Caused by: java.net.BindException: Cannot assign requested address: bind

[Server:load-balancer]  at sun.nio.ch.Net.bind0(Native Method)

[Server:load-balancer]  at sun.nio.ch.Net.bind(Net.java:444)

[Server:load-balancer]  at sun.nio.ch.DatagramChannelImpl.bind(DatagramChannelImpl.java:702)

[Server:load-balancer]  at sun.nio.ch.DatagramSocketAdaptor.bind(DatagramSocketAdaptor.java:91)

[Server:load-balancer]  at org.xnio.nio.NioXnioWorker.createUdpServer(NioXnioWorker.java:216)

[Server:load-balancer]  at io.undertow.server.handlers.proxy.mod_cluster.MCMPAdvertiseTask.advertise(MCMPAdvertiseTask.java:70)

[Server:load-balancer]  at io.undertow.server.handlers.proxy.mod_cluster.ModCluster.advertise(ModCluster.java:149)

[Server:load-balancer]  at org.wildfly.extension.undertow.filters.ModClusterService.start(ModClusterService.java:101)

[Server:load-balancer]  ... 5 more

[Server:load-balancer]

[Server:load-balancer] 07:21:43,478 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-6) WFLYUT0006: Undertow HTTP listener default listening on N-10-006/192.168.56.1:8080

[Server:load-balancer] 07:21:43,941 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-13) WFLYJCA0001: Bound data source [java:jboss/datasources/ExampleDS]

[Server:load-balancer] 07:21:44,008 INFO  [org.jboss.ws.common.management] (MSC service thread 1-6) JBWS022052: Starting JBoss Web Services - Stack CXF Server 5.0.0.Final

[Server:load-balancer] 07:21:44,014 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([

[Server:load-balancer]     ("subsystem" => "undertow"),

[Server:load-balancer]     ("configuration" => "filter"),

[Server:load-balancer]     ("mod-cluster" => "modcluster")

[Server:load-balancer] ]) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.undertow.filter.modcluster" => "org.jboss.msc.service.StartException in service jboss.undertow.filter.modclu

ster: Failed to start service

[Server:load-balancer]     Caused by: java.lang.RuntimeException: java.net.BindException: Cannot assign requested address: bind

[Server:load-balancer]     Caused by: java.net.BindException: Cannot assign requested address: bind"}}

[Server:load-balancer] 07:21:44,087 INFO  [org.jboss.as.controller] (Controller Boot Thread) WFLYCTL0183: Service status report

[Server:load-balancer] WFLYCTL0186:   Services which failed to start:      service jboss.undertow.filter.modcluster: org.jboss.msc.service.StartException in service jboss.undertow.filter.modcluster: F

ailed to start service

[Server:load-balancer]

[swd847]

What address are you binding it to?

Note that multicast support needs a 'real' IP (not localhost), so those instructions have a hard coded IP in there (that happened to be my computers IP at the time), with a comment that says it should be replaced with your machines IP.

[tomlux]

Hy,

I binded it to a local network interface.

I started the domain with:

domain.bat -Djboss.bind.address=192.168.56.1

This is the only modification I did on your latest CLI file from the GitHub: (https://github.com/stuartwdouglas/modcluster-example/blob/master/clustering-domain-mode.txt)

/profile=ha/subsystem=undertow/server=default-server/host=default-host:write-attribute(name=alias, value=[192.168.56.1])

Btw, I'm also connected on FreeNode on #wildfly

[tomlux]

Hy,

the problems seems only to be present under windows environment :-(

Under linux, everything is running fine :-)

Tom

[ctomc]

Tom,

I can reproduce it on windows as well. Looking into what needs to be changed / fixed

[ctomc]

Send PR to fix it in undertow https://github.com/undertow-io/undertow/pull/304

[ctomc]

Undertow 1.2.5.Final was released that includes fix for that,

can you take it and replace it in your wildfly installation and try with it?

you only need to replace undertow-core-<version>.jar in module io.undertow.core

[tomlux]

works, thanks for the quick fix :-)