VNC Server disconnected (code: 1006)

Community Support
1

OpenNebula 5.2

After deploying the VM from vCenter Template i am not gating VNC console .

I have checked this setting

firewall-cmd --state
not running

remotedisplay.vnc.enabled TRUE
remotedisplay.vnc.port 5901
remotedisplay.vnc.ip 0.0.0.0

VMWare Tools is installed

In the vSphere client proceed to Home -> Inventory -> Hosts and Clusters
Select the ESX host, Configuration tab and select Security Profile in the Software category
In the Firewall section, select Edit. Enable GDB Server, then click OK

2

Hi Ranveer,
I’d start checking a few things:

  • Are you running an AdBlocker in your browser? VNC console in Sunstone is affected by that browser extension.
  • Can you confirm that OpenNebula’s frontend can reach the ESX host where the VM is running? For instance, you can install nmap and try to do nmap -p 5900 X.X.X.X changing X.X.X.X with the IP of your ESX host. That way we can check if that port is open and non-filtered.
  • What’s the ID of the VM you’re running?
  • Sometimes I would wait a couple of minutes once the VM is in running state as some operations would be finishing.

Cheers!

3

I haven’t used VMWare, but this might help.
For Vagrant + Virtualbox, when I got the same error:

  1. I went to developer options in the browser, and went to the network tab to see what traffic was happening.

  2. I saw a request for myhost:29876 . This was different from the port I used to access the web portal (myhost:9869).

  3. I modified the Vagrantfile to include both ports…

     config.vm.network "forwarded_port", guest: 9869, host: 9869
 config.vm.network "forwarded_port", guest: 29876, host: 29876