[chef] Re: Uniquely identify a node

[Daniel DeLeo < >]

On Sunday, October 7, 2012 at 10:12 AM, Julien Vehent wrote:

Hi all,

I'm working on a cookbook that distributes keys to nodes. It keeps a history

of the distributions, by identifying a node based on the fqdn.

This is not ideal, because if we recreate a node and reuse the fqdn, then my

cookbook won't redistribute the key to it (until a timer expires after

several hours). So I'm looking for a better way to uniquely identify a node.

I considered using UUIDs stored in node['filesystem'] but their locations

are not deterministic (some nodes use LVM, others just have directly attached

disks, ...).

Does Chef have a parameter that uniquely identifies a node ?

Thanks,

Julien

Off the top of my head, I'd say you can do this pretty easily in a cookbook with something like:

  node.set_unless[:uuid] = UUIDTools::UUID.random_create.to_s

-- 

Daniel DeLeo