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timja / jenkins-gh-issues-poc-06-18

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[JENKINS-15697] 1.487: Automatic JNLP installation breaks Xserve OS X slaves #2675

Open timja opened 11 years ago

timja commented 11 years ago

Since 1.487, Jenkins apparently attempts to run a graphical JNLP installer on all OS X slaves. This is a bad idea because some OS X slaves (such as Xserve-based ones) will not let the jenkins user connect to a window manager, so starting the slave connection always fails.

A fix suggested by Kenny Ayers on the mailing list is to pass -Djava.awt.headless=true to the JVM, which works. But this should be a more readily accessible option in the slave settings UI - especially considering that this new behavior actively prevents previously working slaves from working.

(I would even argue that this behavior should not be the default, but as long as there's an option, I'm happy.)

Originally reported by alexrp, imported from: 1.487: Automatic JNLP installation breaks Xserve OS X slaves
  • status: Open
  • priority: Major
  • resolution: Unresolved
  • imported: 2022/01/10
timja commented 11 years ago

aleksas:

Same issue on mac 10.6.8 when running headless slave. Using jenkins v1.489.

Adding -Djava.awt.headless=true to slave launch command line fixed the issue.

Slave log prior to fix:
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:2553)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1296)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at hudson.remoting.Command.readFrom(Command.java:90)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:59)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
Nov 7, 2012 11:19:16 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Terminated

timja commented 11 years ago

brevilo:

Same regression here on all my OS X build slaves (all types of hardware and OS X versions). The proposed workaround does the trick for the time being...

timja commented 6 years ago

oleg_nenashev:

I am not sure whether it is still actual, but there is a JENKINS-47010 task which suggests disabling installers for headless agents. Same tooling can be used here, probably