hudson-ubuntu-users team mailing list archive

[James Page <james.page@xxxxxxxxxxxxx>]

On Mon, 2011-04-11 at 08:42 +0100, James Page wrote:
> >   1) the first thing I tried to do was to add monitoring of a couple
> > of
> >      cron jobs I run, following the documentation at
> >      https://wiki.jenkins-ci.org/display/JENKINS/Monitoring+external
> > +jobs
> >      However, when I did this and ran my jobs, I found that when
> >      attempting to submit results, it would fail with:
> > 
> >        Exception in thread "main" java.lang.NoClassDefFoundError:
> > org/jruby/ext/posix/POSIX
> >              at hudson.Main.remotePost(Main.java:177)
> >              at hudson.Main.run(Main.java:75)
> >              at hudson.Main.main(Main.java:57)
> > 
> >      It seems there's a missing dependency on jnr-posix
> >
> <http://mvnrepository.com/artifact/org.jruby.ext.posix/jnr-posix>
> >      that isn't being included somewhere. If I download the jar and
> >      include it in the run like so:
> > 
> >        java -classpath ${HOME}/share/jenkins/jenkins-core-1.396.jar:
> > ${HOME}/share/jenkins/jnr-posix-1.1.6.jar hudson.Main "job"
> script.sh
> > 
> >      then it works
> 
> I'll look into this; might be broken upstream and well looking at a
> vanilla jenkins build as well. 

Looks like Jenkins does so weird Java foo to make sure it gets all of
the dependencies it needs;  When jenkins runs it expands
into /var/run/jenkins/war - I managed to get this working fine using the
following command:

export HUDSON_HOME=http://localhost:8080
java -jar /var/run/jenkins/war/WEB-INF/lib/jenkins-core-1.396.jar
external-test echo hello 4

JNA posix is packaged in the web application - I guess core picks it up
auto-magically based on where it is running from.

This is all really ugly so I will work on a separate package and wrapper
script to make this much more elegant and installable outside of a
Jenkins master server.

-- 
James Page
Software Engineer, Ubuntu Server Team

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