Hi, 

Running preview 8 on centos 6.4. Followed instructions and got 
graylog2-server and the web interface up and running on a vm. ES, Mongo, 
and GL2-server/web are all running on the same vm. 

Java version: 
[vagrant@centos64 bin]$ java -version
java version "1.7.0_45"
OpenJDK Runtime Environment (rhel-2.4.3.4.el6_5-x86_64 u45-b15)
OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)

I can login to the UI and navigate around but am getting errors when trying 
to setup my first input according to the directions. I click on "nodes" on 
the system page and get "Oops, an error occurred." 

Graylog2 web-ui logs complain about an unavailable graylog2-server: 

play.api.Application$$anon$1: Execution 
exception[[Graylog2ServerUnavailableException: null]]
        at play.api.Application$class.handleError(Application.scala:293) 
~[com.typesafe.play.play_2.10-2.2.0.jar:2.2.0]
        at play.api.DefaultApplication.handleError(Application.scala:399) 
[com.typesafe.play.play_2.10-2.2.0.jar:2.2.0]
        at 
play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$2$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:261)
 
[com.typesafe.play.play_2.10-2.2.0.jar:2.2.0]
        at 
play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$2$$anonfun$applyOrElse$3.apply(PlayDefaultUpstreamHandler.scala:261)
 
[com.typesafe.play.play_2.10-2.2.0.jar:2.2.0]
        at scala.Option.map(Option.scala:145) 
[org.scala-lang.scala-library-2.10.2.jar:na]
        at 
play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$2.applyOrElse(PlayDefaultUpstreamHandler.scala:261)
 
[com.typesafe.play.play_2.10-2.2.0.jar:2.2.0]
Caused by: lib.security.Graylog2ServerUnavailableException: null
        at lib.ServerNodes.all(ServerNodes.java:76) 
~[graylog2-web-interface.graylog2-web-interface-0.20.0-preview.8.jar:0.20.0-preview.8]
        at lib.ServerNodes.any(ServerNodes.java:108) 
~[graylog2-web-interface.graylog2-web-interface-0.20.0-preview.8.jar:0.20.0-preview.8]
        at lib.ServerNodes.any(ServerNodes.java:104) 
~[graylog2-web-interface.graylog2-web-interface-0.20.0-preview.8.jar:0.20.0-preview.8]
        at 
lib.ApiClientImpl$ApiRequestBuilder.execute(ApiClientImpl.java:324) 
~[graylog2-web-interface.graylog2-web-interface-0.20.0-preview.8.jar:0.20.0-preview.8]
        at models.NodeService.radios(NodeService.java:91) 
~[graylog2-web-interface.graylog2-web-interface-0.20.0-preview.8.jar:0.20.0-preview.8]
        at controllers.NodesController.nodes(NodesController.java:64) 
~[graylog2-web-interface.graylog2-web-interface-0.20.0-preview.8.jar:0.20.0-preview.8]

and looking at the graylog2-server logs I find:

ERROR: org.graylog2.jersey.container.netty.NettyContainer - Uncaught 
exception during jersey resource handling                                   
                                                                    
java.io.IOException: Broken pipe                                           
                                                                            
                                                                            
          
        at sun.nio.ch.FileDispatcherImpl.write0(Native Method)             
                                                                            
                                                                            
          
        at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)     
                                                                            
                                                                            
          
        at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)         
                                                                            
                                                                            
          
        at sun.nio.ch.IOUtil.write(IOUtil.java:51)                         
                                                                            
                                                                            
          
        at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:487)   
                                                                            
                                                                            
         
        at 
org.jboss.netty.channel.socket.nio.SocketSendBufferPool$UnpooledSendBuffer.transferTo(SocketSendBufferPool.java:203)
 
                                                                            
                                 
        at 
org.jboss.netty.channel.socket.nio.AbstractNioWorker.write0(AbstractNioWorker.java:201)
 
                                                                            
                                                              
        at 
org.jboss.netty.channel.socket.nio.AbstractNioWorker.writeFromUserCode(AbstractNioWorker.java:146)
 
                                                                            
                                                   
        at 
org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.handleAcceptedSocket(NioServerSocketPipelineSink.java:99)
 
                                                                            
                             
        at 
org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:36)
 
                                                                            
                                        
        at org.jboss.netty.channel.Channels.write(Channels.java:725)       
                                                                            
                                                                            
          
        at 
org.jboss.netty.handler.codec.oneone.OneToOneEncoder.doEncode(OneToOneEncoder.java:71)
 
                                                                            
                                                               
        at 
org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:59)
 
                                                                            
                                                       
        at 
org.jboss.netty.handler.stream.ChunkedWriteHandler.flush(ChunkedWriteHandler.java:280)
 
                                                                            
                                                               
        at 
org.jboss.netty.handler.stream.ChunkedWriteHandler.handleDownstream(ChunkedWriteHandler.java:121)
 
                                                                            
                                                    
        at org.jboss.netty.channel.Channels.write(Channels.java:704)       
                                                                            
                                                                            
          
        at org.jboss.netty.channel.Channels.write(Channels.java:671)       
                                                                            
                                                                            
          
        at 
org.jboss.netty.channel.AbstractChannel.write(AbstractChannel.java:248)     
                                                                            
                                                                          
        at 
org.graylog2.jersey.container.netty.NettyContainer$NettyResponseWriter.commit(NettyContainer.java:149)
 
                                                                            
                                               
        at 
org.glassfish.jersey.server.ContainerResponse.close(ContainerResponse.java:412) 
                                                                            
                                                                      
        at 
org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:526)
 
                                                                            
                                                            
        at 
org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:333)
 
                                                                            
                                                          
        at 
org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:323)
 
                                                                            
                                                                  
        at 
org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:227)     
                                                                            
                                                                          
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)     
                                                                            
                                                                            
         
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)     
                                                                            
                                                                            
         
        at org.glassfish.jersey.internal.Errors.process(Errors.java:315)   
                                                                            
                                                                            
          
        at org.glassfish.jersey.internal.Errors.process(Errors.java:297)   
                                                                            
                                                                            
          
        at org.glassfish.jersey.internal.Errors.process(Errors.java:267)   
                                                                            
                                                                            
          
        at 
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
 
                                                                            
                                                                 
        at 
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:198)   
                                                                            
                                                                          
        at 
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:946)
 
                                                                            
                                                                   
        at 
org.graylog2.jersey.container.netty.NettyContainer.messageReceived(NettyContainer.java:254)
 
                                                                            
                                                          
        at 
org.jboss.netty.handler.stream.ChunkedWriteHandler.handleUpstream(ChunkedWriteHandler.java:142)
 
                                                                            
                                                      
        at 
org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)     
                                                                            
                                                                          
        at 
org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:459)
 
                                                                            
                                                 
        at 
org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:536)
 
                                                                            
                                                          
        at 
org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)
 
                                                                            
                                                     
        at 
org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)     
                                                                            
                                                                          
        at 
org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)     
                                                                            
                                                                          
        at 
org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)       
                                                                            
                                                                           
        at 
org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)
 
                                                                            
                                                             
        at 
org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)
 
                                                                            
                                                             
        at 
org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)
 
                                                                            
                                                                  
        at 
org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)       
                                                                            
                                                                           
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
                                                                            
                                                                      
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
                                                                            
                                                                      
        at java.lang.Thread.run(Thread.java:744)

followed by a bunch of "ERROR: 
org.graylog2.jersey.container.netty.NettyContainer - Uncaught exception 
during jersey resource handling                                             
                                                          
java.nio.channels.ClosedChannelException " errors. 

No other errors are in either components logs. I haven't changed any of the 
config defaults other than those pointed out in the installation 
instructions.

Any thoughts? 

For what it's worth the "logging" URL ( http://127.0.0.1:9000/system/logging ) 
off 
the system page throws the same set of errors for me.

-j

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