java.io.IOException: Remote call on pelham failed
...
Caused by: java.lang.InternalError: Can't connect to window server - not enough permissions.Then I tried "Launch slave agents via Java Web Start"And on the slave I navigated to http://dhcp151178:8080/computer/pelham/slave-agent.jnlp
This gave me:
java.lang.Exception: The server rejected the connection: Unauthorized access
at hudson.remoting.Engine.onConnectionRejected(Engine.java:257)
at hudson.remoting.Engine.run(Engine.java:232)
Also, based on the following post:
http://stackoverflow.com/questions/11824486/setting-up-a-hudson-slave-on-windows-xp
I tried downloading the jnlp file from the URL above, replacing all instances of 'localhost' with 'dhcp151178' and launching the jnlp with javaws, this either gives me no console output at all (but the slave agent gui says Terminated) or it says:
...
Exception in thread "main" java.lang.InternalError: Can't connect to window server - not enough permissions.
I tried starting in headless mode, both as jenkins and as my regular admin user. I did this on the slave:
java -jar slave.jar -jnlpUrl http://dhcp151178:8080/computer/pelham/slave-agent.jnlp Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener <init> INFO: Jenkins agent is running in headless mode. Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Locating server among [http://localhost:8080/, http://dhcp151178:8080/] Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Connecting to localhost:49161 Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener status INFO: Handshaking Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener error SEVERE: The server rejected the connection: Unauthorized access java.lang.Exception: The server rejected the connection: Unauthorized access at hudson.remoting.Engine.onConnectionRejected(Engine.java:257) at hudson.remoting.Engine.run(Engine.java:232)
There is no security set up on the master, so I'm not sure what the unauthorized access is about, and there is no -auth username:password that I can add to that command line.
I'm not sure how to set up "Launch slave via execution of command on the Master" because I can't find much documentation for that.
So I'm stuck. I was able to set up a windows slave so I know that it is possible. But the Mac slave does not want to start. Can you help?
Thanks,
Dan
Addenda: full stack trace from trying to launch slave agents on the master using ssh:
04/30/13 17:23:29] [SSH] Opening SSH connection to pelham:22. [04/30/13 17:23:29] [SSH] Authentication successful. [04/30/13 17:23:29] [SSH] The remote users environment is: BASH=/bin/bash BASH_ARGC=() BASH_ARGV=() BASH_EXECUTION_STRING=set BASH_LINENO=() BASH_SOURCE=() BASH_VERSINFO=([0]="3" [1]="2" [2]="48" [3]="1" [4]="release" [5]="x86_64-apple-darwin10.0") BASH_VERSION='3.2.48(1)-release' DIRSTACK=() EUID=216 GROUPS=() HOME=/Users/Shared/Jenkins HOSTNAME=pelham.fhcrc.org HOSTTYPE=x86_64 IFS=$' \t\n' LOGNAME=jenkins MACHTYPE=x86_64-apple-darwin10.0 MAIL=/var/mail/jenkins OPTERR=1 OPTIND=1 OSTYPE=darwin10.0 PATH=/usr/bin:/bin:/usr/sbin:/sbin PPID=545 PS4='+ ' PWD=/Users/Shared/Jenkins SHELL=/bin/bash SHELLOPTS=braceexpand:hashall:interactive-comments SHLVL=1 SSH_CLIENT='140.107.151.178 56267 22' SSH_CONNECTION='140.107.151.178 56267 140.107.150.101 22' TERM=dumb UID=216 USER=jenkins _=bash [04/30/13 17:23:29] [SSH] Checking java version of java [04/30/13 17:23:29] [SSH] java -version returned 1.6.0_45. [04/30/13 17:23:29] [SSH] Starting sftp client. [04/30/13 17:23:29] [SSH] Copying latest slave.jar... [04/30/13 17:23:29] [SSH] Copied 284,251 bytes. Expanded the channel window size to 4MB [04/30/13 17:23:29] [SSH] Starting slave process: cd '/Users/Shared/Jenkins/master' && java -jar slave.jar <===[JENKINS REMOTING CAPACITY]===>channel started Slave.jar version: 2.23 This is a Unix slave Copied maven-agent.jar Copied maven3-agent.jar Copied maven3-interceptor.jar Copied maven-interceptor.jar Copied maven2.1-interceptor.jar Copied plexus-classworld.jar Copied classworlds.jar Evacuated stdout Tue Apr 30 17:23:31 pelham.fhcrc.org java[551] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged. java.io.IOException: Remote call on pelham failed at hudson.remoting.Channel.call(Channel.java:681) at org.jenkinsci.modules.slave_installer.impl.ComputerListenerImpl.onOnline(ComputerListenerImpl.java:32) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:472) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:340) at hudson.plugins.sshslaves.SSHLauncher.startSlave(SSHLauncher.java:678) at hudson.plugins.sshslaves.SSHLauncher.launch(SSHLauncher.java:472) at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:223) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:680) Caused by: java.lang.InternalError: Can't connect to window server - not enough permissions. at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1827) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1724) at java.lang.Runtime.loadLibrary0(Runtime.java:823) at java.lang.System.loadLibrary(System.java:1045) at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:50) at java.security.AccessController.doPrivileged(Native Method) at sun.awt.NativeLibLoader.loadLibraries(NativeLibLoader.java:38) at sun.awt.DebugHelper.<clinit>(DebugHelper.java:29) at java.awt.Component.<clinit>(Component.java:566) at org.jenkinsci.modules.slave_installer.impl.InstallerGui.call(InstallerGui.java:47) at org.jenkinsci.modules.slave_installer.impl.InstallerGui.call(InstallerGui.java:29) at hudson.remoting.UserRequest.perform(UserRequest.java:118) at hudson.remoting.UserRequest.perform(UserRequest.java:48) at hudson.remoting.Request$2.run(Request.java:326) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72) ... 5 more [04/30/13 17:23:31] [SSH] Connection closed. ERROR: Connection terminated java.io.IOException: Unexpected termination of the channel at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50) Caused by: java.io.EOFException at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2557) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1294) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) at hudson.remoting.Command.readFrom(Command.java:92) at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:59) at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48) ERROR: [04/30/13 17:23:31] slave agent was terminated java.io.IOException: Unexpected termination of the channel at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50) Caused by: java.io.EOFException at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2557) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1294) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) at hudson.remoting.Command.readFrom(Command.java:92) at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:59) at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
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I also downloaded the JNLP manually and tried this:Âjavaws -Jjava.awt.headless=true slave-agent.jnlpÂ...but I get:Â...ÂSplash: Can't connect to window server.: No such file or directoryÂWed May  1 15:04:49 pitt.fhcrc.org java[349] <Error>: kCGErrorFailure:ÂSet a breakpoint @ CGErrorBreakpoint() to catch errors as they areÂlogged.ÂException in thread "main" java.lang.InternalError: Can't connect toÂwindow server - not enough permissions.Â
OK, so that ensures that the jenkins web app is always running, butÂI'm not clear whether that means that the slave will always be runningÂ(and in contact with the master).Â
java -jar slave.jar -jnlpUrl http://dhcp151178:8080/computer/pelham/slave-agent.jnlp
Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener <init>
INFO: Jenkins agent is running in headless mode.
Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among [http://localhost:8080/, http://dhcp151178:8080/]
Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to localhost:49161
Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Apr 30, 2013 5:19:02 PM hudson.remoting.jnlp.Main$CuiListener error
SEVERE: The server rejected the connection: Unauthorized access
java.lang.Exception: The server rejected the connection: Unauthorized access
at hudson.remoting.Engine.onConnectionRejected(Engine.java:257)
at hudson.remoting.Engine.run(Engine.java:232)