[chef] Changing Rackspace Cloud detection in Ohai (OHAI-387)

[Bryan McLellan < >]

We're planning on removing support for detecting instances on the original 
Rackspace Cloud by the 00:00:0c:07:ac:01 and 00:00:0c:9f:f0:01 MAC addresses 
[1]. These are actually Cisco HSRP addresses and provide a false positive for 
anyone running that on their network. There is no way to detect a Rackspace 
Cloud instance from the system itself, so we implemented a hint system for 
Ohai a while ago to work around this [2]. If you have Rackspace Cloud based 
systems and expect you'll upgrade Ohai, please create a recipe to create 
"/etc/chef/ohai/hints/rackspace.json" on those systems, and only those 
systems.

A hat tip goes to Google for allowing the identification of GCE from DMI 
information. If you know anyone at Rackspace, please continue encouraging 
them to do the same.

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Bryan McLellan | opscode | technical program manager, open source
(c) 206.607.7108 | (t) @btmspox | (b) http://blog.loftninjas.org

[1] http://tickets.opscode.com/browse/OHAI-387
[2] http://tickets.opscode.com/browse/OHAI-267