OpenStack spice vncproxy

Spice Console

緣由

OpenStack Compute has long had support for VNC consoles to guests. The VNC protocol is fairly limited, lacking support for multiple monitors, bi-directional audio, reliable cut+paste, video streaming and more. 

SPICE is a new protocol which aims to address all the limitations in VNC, to provide good remote desktop support.

SPICE support in OpenStack Compute shares a similar architecture to the VNC implementation. 

The OpenStack Dashboard uses a SPICE-HTML5 widget in its console tab, that communicates to the nova-spicehtml5proxy service using SPICE-over-websockets. The nova-spicehtml5proxy service communicates directly with the hypervisor process using SPICE.

Reference

1. http://en.wikipedia.org/wiki/SPICE_(protocol)

2. http://www.linux-kvm.org/page/SPICE

3. KVM+Spice, http://coolex.info/blog/153.html

4.