Everything was working good until today, but now I'm seeing an error while my Jenkins (1.585) job, which is running/using Xvfb plugin, it's giving me the following error.
Any idea, why it's coming. I tried many times.
15:00:07 Xvfb starting$ Xvfb :10 -screen 0 1024x768x24 -fbdir /production/home/koba/JSlaves/loki10_1/xvfb-2015-02-09_14-59-58-7153097250048722116.fbdir
15:00:07 _XSERVTransSocketINETCreateListener: ...SocketCreateListener() failed
15:00:07 _XSERVTransMakeAllCOTSServerListeners: server already running
15:00:07
15:00:07 Fatal server error:
15:00:07 Cannot establish any listening sockets - Make sure an X server isn't already running
15:00:07 unlink: No such file or directory
15:01:07 unlink failed, errno 2
15:01:07 ERROR: Xvfb failed to start, consult the lines above for errors
Running ps -eAf on the box (a RHEL box), shows a valid running service and no other "already running display service":
/usr/bin/Xvfb :99 -ac -screen 0 1024x768x8
If Jenkins Xvfb plugin's works, then you'd usually see an output similar to the one shown below (for the ps command):
usr/bin/Xvfb :99 -ac -screen 0 1024x768x8
Xvfb :11 -screen 0 1024x768x24 -fbdir /production/home/koba/JSlaves/loki10_1/xvfb-2015-02-09_14-37-38-3214202920310710589.fbdir
Where :11 is a random Display number that Jenkins Xvfb plugin is generating.