VNC console not working

[mastermindpro]

When I first installed PVE via the 1.0 CD, the VNC console option worked just fine. I haven't used it for a couple weeks, and no changes to the hardware node have been made (not even a reboot). After creating a new OpenVZ container, I get an error when trying to use the VNC console:

Network error: could not connect to server: vs8:5900

The option still works for other containers. Any ideas?

 

[dietmar]

What template do you use?

 

[mastermindpro]

We used a template that we copied over from an OpenVZ install we have. Perhaps that's the problem? It's a CentOS 5.2 minimal template.

 

[JimmyWireless]

sometimes it takes me 2X to get into VNC console view on a fully virtualized KVM Win2003 server. have you tired closing the error console and then immediately open another VNC again, i.e. 2X?

 

[dietmar]

We used a template that we copied over from an OpenVZ install we have. Perhaps that's the problem? It's a CentOS 5.2 minimal template.

Can you enter the CT manually?

# vzct enter VMID

 

[fredlim]

Occasionally the VNC console is not working well. The VNC sometimes freeze and cannot display properly for the openSUSE 11.1 guest.

Is it the host or the guest issue?

 

[dietmar]

Is it the host or the guest issue?

Or a web browser/java issue - what browser/OS/java do you use?

 

[fredlim]

I have the freeze problem with Windows XP+JDK 1.5.16 and Vista+JDK 1.6.10
My guest OS is openSUSE 11.1 using KVM
Today I try the Debian appliance in OpenVZ, the screen freeze when I use dselect and keep pressing down arrow to browse the packages.

 

[Zab]

Experiencing similar problem here. VNC session sometimes don't work after closing a previous session. Further analysis shows the TCP session stay ESTABLISHED, even when closing with "disconnect" button or closing the window. Closing the whole browser effectively close the TCP session, hence a new browser can open a VNC session.

I'm using Firfox 3.0.3, java 1.6.0_06-b02 on ubuntu 8.04 x86.

Someone else with this problem ?

You can show you TCP session with "netstat -anp | grep 5900".

 

[vuser1]

Confirm

I confirm that VNC Console has problems. WinXP + Opera9.6 + Sun java1.6.
Sometimes (rarely) it could not connect. In case when guest screen is 1024x768, on my 1280x800 laptop I cannot see bottom of guest screen because browser window has no vertical scroller. This is unusable.

Browser VNC is excellent feature - it allows connect to VM from internet-cafe. Connecting external VNCviewer w/o need of runnung vncproxy everytime could be very cool option for PVE! Personally I am going to use inetd to run vncproxy all the time, as described in this post.