[one-users] noVNC error: "Server disconnected" [socket.error: [Errno 98] Address already in use] ?

[Hector Sanjuan]

Hello,

which version of OpenNebula are you using?

It looks like wsproxy process is not conveniently terminated after closing  
the connection. A more convinient workaround would be to kill the wsproxy  
process in the frontend manually I guess.

I have opened a ticket to keep track of this and see if I can reproduce it  
as well. http://dev.opennebula.org/issues/1201

Hector

En Sat, 31 Mar 2012 11:24:44 +0200, biro lehel <lehel.biro at yahoo.com>  
escribió:

> Hello,
>
> I seem to have a noVNC-related issue. From time-to-time, I get a "Server  
> disconnected" error, when accessing my VM's through VNC. I've noticed  
> that it usually (only) happens when I was previously connected to that  
> specific VM (for which the error occurs) through VNC for an extended  
> period of time (but not more than 10-15 minutes), closed the connection,  
> and then tried to reconnect (this is where I get the error). It never  
> happened (so far) in situations other than this, if the VNC-connections  
> are short-termed in time, I can close and reconnect to VM's through VNC  
> as many times as I want.
>
> The only workaround I've found so far is rebooting both the front-end  
> and the respective host, which, as you can imagine, is rather  
> inconvenient to do each time this error occurs.
>
> sunstone.log contains the following about the
>  error:
>
> Starting vnc proxy: /usr/share/one/noVNC/utils/wsproxy.py 35822 pcls:5946
> /usr/lib/one/sunstone/models/SunstoneServer.rb:234: warning: Insecure  
> world writable dir /usr/X11R6/bin in PATH, mode 040777
> 127.0.0.1 - - [31/Mar/2012 12:08:17] "POST /vm/46/startvnc HTTP/1.1" 200  
> 30 0.1036
> 127.0.0.1 - - [31/Mar/2012 12:08:17] "GET  
> /vendor/jQueryUI/images/ui-bg_glass_55_fbf9ee_1x400.png HTTP/1.1" 200  
> 120 0.0116
> Traceback (most recent call last):
>   File "/usr/share/one/noVNC/utils/wsproxy.py", line 282, in <module>
>     server.start_server()
>   File "/usr/share/one/noVNC/utils/websocket.py", line 794, in  
> start_server
>     lsock = self.socket(self.listen_host, self.listen_port)
>   File "/usr/share/one/noVNC/utils/websocket.py", line 185, in socket
>     sock.bind(addrs[0][4])
>   File "/usr/lib64/python2.7/socket.py", line 222, in meth
>    return getattr(self._sock,name)(*args)
> socket.error: [Errno 98] Address already in use
> 127.0.0.1 - - [31/Mar/2012 12:08:32] "POST /vm/46/stopvnc HTTP/1.1" 200  
> - 0.0856
>
> Since I'm not an expert in Python, I didn't want to dig myself into the  
> above-named files so far.
>
> Any ideas what should I check, or what should I do?
>
> Thank you,
> Lehel.


-- 
Hector Sanjuan
OpenNebula Developer