Master slave connection problem (Ubuntu slave)

[Ozcan Ovunc]

Hi,

I have a Windows master and Ubuntu 14.04 slave (VirtualBox). I successfully connected them by running 

/home/jenkins$ java -jar slave.jar -jnlpUrl http://192.168.56.1:8080/computer/Kole/slave-agent.jnlp

command and the output was:

Jul 21, 2015 3:22:08 PM hudson.remoting.jnlp.Main createEngine

INFO: Setting up slave: Kole

Jul 21, 2015 3:22:08 PM hudson.remoting.jnlp.Main$CuiListener <init>

INFO: Jenkins agent is running in headless mode.

Jul 21, 2015 3:22:08 PM hudson.remoting.jnlp.Main$CuiListener status

INFO: Locating server among [http://192.168.56.1:8080/]

Jul 21, 2015 3:22:08 PM hudson.remoting.jnlp.Main$CuiListener status

INFO: Handshaking

Jul 21, 2015 3:22:08 PM hudson.remoting.jnlp.Main$CuiListener status

INFO: Connecting to 192.168.56.1:51149

Jul 21, 2015 3:22:08 PM hudson.remoting.jnlp.Main$CuiListener status

INFO: Trying protocol: JNLP2-connect

Jul 21, 2015 3:22:08 PM hudson.remoting.jnlp.Main$CuiListener status

INFO: Connected

When I go master and check out for slave log, it confirms that everything is ok:

JNLP agent connected from /192.168.56.1
<===[JENKINS REMOTING CAPACITY]===>Slave.jar version: 2.51
This is a Unix slave
Slave successfully connected and online

 

But when I try to build one of my projects, I get this error from console:

Started by user anonymous
Building remotely on Kole (python27 natty) in workspace /home/jenkins/workspace/jenkins-test
java.io.IOException: Failed to mkdirs: /home/jenkins/workspace/jenkins-test
	at hudson.FilePath.mkdirs(FilePath.java:1164)
	at hudson.model.AbstractProject.checkout(AbstractProject.java:1275)
	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:610)
	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:532)
	at hudson.model.Run.execute(Run.java:1744)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:98)
	at hudson.model.Executor.run(Executor.java:374)
Finished: FAILURE

Any help would be really appreciated!

Regards.

[Mark Waite]

The user executing that JNLP file on your Ubuntu machine probably does not have permission to write to the /home/jenkins directory.  From the "node executors" menu you should be able to review the properties of that node, including the name of the user it is using.  I suspect it is not the jenkins user on that Ubuntu machine, or if it is the jenkins user, then the jenkins user does not have permission to write to /home/jenkins/workspace.

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Thanks!

Mark Waite

[Ozcan Ovunc]

Where is the "node executors" menu btw?

[Mark Waite]

Sorry for using the wrong phrase to describe it.  On my installation, it is the "Build Executor Status" and is immediately above the list of slaves on the left side of the root page.

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Thanks!

Mark Waite

[Ozcan Ovunc]

Oh. I know Build Executor Status bar but that shows only the jobs that nodes are currently building :/