[Openstack] Dashboard VNC Console failed to connect to server

Guilherme Birk guibirk at hotmail.com
Fri Mar 30 18:29:44 UTC 2012


I installed the nova-consoleauth service and that resolved the problem 
of 404 not found. Now I'm getting a cannot connect to the server 
127.0.0.1:6080. The IP 127.0.0.1 is strange, because on my nova.conf 
file I have the following flags:
--vncserver_listen=192.168.100.142
--vncserver_proxyclient_address=192.168.100.142
--vncproxy_url=http://192.168.100.142:6080
--vnc_console_proxy_url=http://192.168.100.142:6080

My problem could be because of the localhost IP? I've already tried the port 6081, but with no success.

From: lucianthomaz at hotmail.com
To: sleepsonthefloor at gmail.com
Date: Fri, 30 Mar 2012 16:30:05 +0000
CC: openstack at lists.launchpad.net
Subject: Re: [Openstack] Dashboard VNC Console failed to connect to server







Anthony, I tried to add this flags there and do some more things but I didn't have sucess yet.

I made a question in launchpad with all my network configurations and my log. Can you see that please?

Thank you.

https://answers.launchpad.net/nova/+question/192153

Lucian Thomaz


Date: Thu, 29 Mar 2012 12:28:24 -0700
Subject: Re: [Openstack] Dashboard VNC Console failed to connect to server
From: sleepsonthefloor at gmail.com
To: lucianthomaz at hotmail.com
CC: openstack at lists.launchpad.net

Here are several flags that you must set on your compute host for a multi host deploy:


:option:`--vncserver_listen` - defaults to 127.0.0.1 This is the address that vncservers will bind, and should be overridden in production deployments as a private address. Applies to libvirt only. For multi-host libvirt deployments this should be set to a host management ip on the same network as the proxies.

:option:`--vncserver_proxyclient_address` - defaults to 127.0.0.1 This is the address of the compute host that nova will instruct proxies to use when connecting to instance vncservers. For all-in-one xen server domU deployments this can be set to 169.254.0.1. For multi-host xen server domU deployments this can be set to a dom0 management ip on the same network as the proxies. For multi-host libvirt deployments this can be set to a host management ip on the same network as the proxies.

:option:`--novncproxy_base_url=[base url for client connections]` - this is the public base url to which clients will connect. "?token=abc" will be added to this url for the purposes of auth. When using the system as described in this document, an appropriate value is "http://$SERVICE_HOST:6080/vnc_auto.html" where SERVICE_HOST is a public hostname.
Suppose you have 2 servers, APISERVER and COMPUTESERVER:
APISERVER:public hostname = my.server.commanagement ip = 192.168.1.1
public ip = 172.24.4.1
COMPUTESERVER:management ip = 192.168.1.2
Your nova.conf con COMPUTESERVER would need the following flags:

novncproxy_base_url=http://my.server.com:6080/vnc_auto.html or novncproxy_base_url=http://172.24.4.1:6080/vnc_auto.html
vncserver_proxyclient_address=192.168.1.2vncserver_listen=192.168.1.2

Note that novncproxy_base_url references a public ip or hostname (so clients can connect), while the other flags use private ips.

For more info:https://github.com/openstack/nova/blob/master/doc/source/runnova/vncconsole.rst


On Thu, Mar 29, 2012 at 11:07 AM, Lucian Thomaz <lucianthomaz at hotmail.com> wrote:





Hey guys,
I'm using Dashboard with a nova-compute installed in another machine, but when I try access VNC Console I get the error "failed to connect to server".

Here is the log -> http://pastebin.com/5DZMfiNE

Anyone already saw this trouble?



Lucian Thomaz 
 		 	   		  

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