Hi, please see if following text can help.
To enable vnc console access VMs started by OpenStack, we need many components to collaborate.
-
Components on control node
- nova-api, which is API server of OpenStack
- nova-consoleauth, which is used to authorize vnc client
- noVNC, which is a VNC proxy for browser. An alternative proxy is nova-xvpvncproxy, which can accessed by a Java client at https://github.com/cloudbuilders/nova-xvpvncviewer.
-
Components on compute node
- nova-compute, which is nova binary to instantiate VMs
- libvirt driver, which is used by nova-compute to interact with libvirt server
- VNC server, which is part of hypervisor?
Steps for user to access VNC console
1. user gets the vnc console by command：
|
[root@robinlinux utils]# nova get-vnc-console myserver20 novnc |
nova-api accepts this request, and then sends out "get_vnc_console" message to VM's related compute host
2. nova-compute, running on that compute host accepts that message, generate a token and call libvirt driver's get_vnc_console methods.
3. Libvirt driver will connect with libvirt server to get VM's vnc port, and look up the vnc host from FLAGS.vncserver_proxyclient_address.
4. nova-api will send out "authorize_console" message to nova-consoleauth, which then caches the connection information returned by compute-node with token as key
5. user browsers the URL returned the previous command, like below:
|
[root@robinlinux utils]# nova get-vnc-console myserver20 novnc +-------+----------------------------------------------------------------------------------+ | Type | Url | +-------+----------------------------------------------------------------------------------+ | novnc | http://controlnode:6080/vnc_auto.html?token=34ce7a44-6186-43d8-be14-2ea9e028b8fa | +-------+----------------------------------------------------------------------------------+ |
6. noVNC, which is listening on 6080 HTTP port, accepts the URL request, sends out "check_token" message to nova-consoleauth
7. nova-consoleauth checks the cached connections and returns one according to the requested token key
8. noVNC begins the proxy work, connecting the VNC server
About configuration items in nova.conf
|
#read by nova-compute to compose vnc-console URL # for novnc novncproxy_base_url=http://controlnode:6080/vnc_auto.html # for xvpvnc xvpvncproxy_base_url=http://controlnode:6081/console #read by nova-compute to instantiate VMs vncserver_listen=controlnode #read by libvirt driver to compute vnc-console URL vncserver_proxyclient_address=controlnode |
To: openstack@lists.launchpad.net
From: Nachi Ueno <ueno.na...@nttdata-agilenet.com>
Sent by: openstack-bounces+gongysh=cn.ibm....@lists.launchpad.net
Date: 04/13/2012 08:33AM
Subject: [Openstack] How to setup vncproxy with ubuntu precise package?
Hi folks
I'm trying to setup vncproxy with ubuntu package on precise.
But I could'nt find document how to setup them.
If you there are information, could you share me?
Thank you in advance
Nachi
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