I'm trying to run a slave on a remote computer, but it isn't working. For some reason the slave fails after the link has been established between the master and remote nodes.
The error message looks like this:
java.lang.NoClassDefFoundError: hudson/model/Run$RunExecution
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.getConstructor(Class.java:1657)
at hudson.model.AbstractProject.newBuild(AbstractProject.java:944)
at hudson.model.AbstractProject.createExecutable(AbstractProject.java:1159)
at hudson.model.AbstractProject.createExecutable(AbstractProject.java:129)
at hudson.model.Executor.run(Executor.java:214)
Caused by: java.lang.ClassNotFoundException: hudson.model.Run$RunExecution
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 8 more
Any idea about what might be causing this malfunctioning?
It would be really nice to fix this issue for all of the people who are going to be upgrading and run into this issue and have to apply the workaround in the previous comment.
Brian Murrell
added a comment - - edited Still no resolution to this issue?
It would be really nice to fix this issue for all of the people who are going to be upgrading and run into this issue and have to apply the workaround in the previous comment.
Even a mention in https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2013-01-04 of the issue and work-around would be useful instead of people wasting time as I did trying to figure out what the problem is.
I also get the error message in 1.498:
Thread has died
java.lang.NullPointerException
at hudson.matrix.MatrixConfiguration.newBuild(MatrixConfiguration.java:220)
at hudson.matrix.MatrixConfiguration.newBuild(MatrixConfiguration.java:66)
at hudson.model.AbstractProject.createExecutable(AbstractProject.java:1266)
at hudson.model.AbstractProject.createExecutable(AbstractProject.java:138)
at hudson.model.Executor.run(Executor.java:211)
I can reproduce by starting a slave on a node (works) and then start a second slave on the same node (fails).
I'm using SSH.
Magnus Larsson
added a comment - I also get the error message in 1.498:
Thread has died
java.lang.NullPointerException
at hudson.matrix.MatrixConfiguration.newBuild(MatrixConfiguration.java:220)
at hudson.matrix.MatrixConfiguration.newBuild(MatrixConfiguration.java:66)
at hudson.model.AbstractProject.createExecutable(AbstractProject.java:1266)
at hudson.model.AbstractProject.createExecutable(AbstractProject.java:138)
at hudson.model.Executor.run(Executor.java:211)
I can reproduce by starting a slave on a node (works) and then start a second slave on the same node (fails).
I'm using SSH.
Additional data:
Slave successfully connected and online
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$BlockDataInputStream.peekByte(ObjectInputStream.java:2554)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1297)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:59)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48) [01/16/13 09:05:06][SSH] Connection closed.
ERROR: [01/16/13 09:05:06] 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:2554)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1297)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:59)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
Magnus Larsson
added a comment - Additional data:
Slave successfully connected and online
ERROR: Connection terminated
java.io.IOException: Unexpected termination of the channel
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50)
Caused by: java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2554)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1297)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:59)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
[01/16/13 09:05:06] [SSH] Connection closed.
ERROR: [01/16/13 09:05:06] 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:2554)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1297)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:59)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
It seems to work for me now.
My "SSH Slave Plugin" was out-of-date (v2.1). I upgraded to 2.2 and my Dead slave nodes went away. I'm now running v1.499 with no problem.
Magnus Larsson
added a comment - - edited It seems to work for me now.
My "SSH Slave Plugin" was out-of-date (v2.1). I upgraded to 2.2 and my Dead slave nodes went away. I'm now running v1.499 with no problem.
We are having this problem as well on v1.499. I already installed the latest ssh slave plugin, but it didn't work.
At least, the workaround proposed by Aerts (removing matrix jobs from the queue and restarting the slave thread) worked.
taksan
added a comment - - edited We are having this problem as well on v1.499. I already installed the latest ssh slave plugin, but it didn't work.
At least, the workaround proposed by Aerts (removing matrix jobs from the queue and restarting the slave thread) worked.
Most probably, the issue has been fixed by the classloading fix (see JENKINS-19453).
Please re-open if it appears on newest versions
Oleg Nenashev
added a comment - Most probably, the issue has been fixed by the classloading fix (see JENKINS-19453 ).
Please re-open if it appears on newest versions
I haven't been using Jenkins for a couple of years, but as Oleg mentioned before, it is most likely solved by the classloading fix (see JENKINS-19453).
Carlos André
added a comment - Hi Sam,
I haven't been using Jenkins for a couple of years, but as Oleg mentioned before, it is most likely solved by the classloading fix (see JENKINS-19453 ).
Kohsuke Kawaguchi
Carlos André
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Created:
Updated:
Resolved:
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JENKINS-19453 Slave launcher fails after NoClassDefFoundError: Could not initialize class jenkins.model.Jenkins$MasterComputer
Magnus Larsson
added a comment - 
taksan
added a comment - - edited We are having this problem as well on v1.499. I already installed the latest ssh slave plugin, but it didn't work.
At least, the workaround proposed by Aerts (removing matrix jobs from the queue and restarting the slave thread) worked. 
Olivier Chédru
added a comment - 
David Gang
added a comment - I have the same problem with jenkins 1.513 and slave plugin 2.17 
Carlos André
added a comment - 
Still no resolution to this issue?
It would be really nice to fix this issue for all of the people who are going to be upgrading and run into this issue and have to apply the workaround in the previous comment.
Even a mention in https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2013-01-04 of the issue and work-around would be useful instead of people wasting time as I did trying to figure out what the problem is.