Bug #1757

novnc console sometimes bound to wrong vnc port with xen

Added by Laurent Grawet over 8 years ago. Updated over 7 years ago.

Status:ClosedStart date:02/06/2013
Priority:NormalDue date:
Assignee:Javi Fontan% Done:


Target version:Release 4.4
Resolution:fixed Pull request:
Affected Versions:OpenNebula 3.8



I've had the following issue yesterday. Using novnc console, I've noticed that I was connected to the wrong vm.
WMID=113 but vnc port was actually 6014 (5900+114) instead of 6013 on the xen server.

  1. xm list one-113 -l | grep location
    (location 4)

Looking at xend.log file, I could find the following parameters were used to deploy the VM :


which is mostly OK excepted vncunused=1 which tells the xen server to use the next available port starting from 5900.
vncdisplay and vncunused are opposite options. vncunused should be set to 0 when using vncdisplay.

I see no mention of vncunused parameter either in opennebula deployment files nor in source code. So vncunused=1 is kind of a default.
I've had the issue for several vms which had vncport shifted +1. I'm not sure the first cause of my problem is here, but, even if it works most of the time, this should be fixed.



Associated revisions

Revision c569622a
Added by Javi Fontan over 7 years ago

bug #1757: add vncunused to xen deployment


#1 Updated by Ruben S. Montero over 7 years ago

  • Category changed from Core & System to Sunstone
  • Status changed from New to Pending
  • Assignee set to Javi Fontan
  • Target version set to Release 4.4

#2 Updated by Javi Fontan over 7 years ago


We are adding this parameter to xen deployment file when a port is specified.

#3 Updated by Javi Fontan over 7 years ago

  • Status changed from Pending to Closed
  • Resolution set to fixed

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