[chef] Re: Re: Attach role to a floating IP address

[Alan Harper < >]

On 25/01/2012, at 9:53 AM, Noah Kantrowitz wrote:

> On Jan 24, 2012, at 2:43 PM, Alan Harper wrote:
> 
>> Hi Everyone,
>> 
>> I want to have my nodes find a virtual ip by searching for a role. In the 
>> first instance, it is for application servers looking for the correct 
>> database server to use, and which rabbitmq server to use, but I'm sure 
>> I'll have some other usages soon.
>> 
>> Any advice, or should I look at this from another angle?
> 
> Funny, we were just talking about this the other day for Opscode's own 
> network. We currently store this kind of stuff in a per-env data bag item, 
> but somehow using nodes/roles/search is something we would like to be able 
> to do. You can definitely create a "fake" node with a run-list and IP/FQDN 
> filled in manually, but then you have to worry about it showing up in other 
> searches (think `knife ssh '*:*' sudo apt-get update` or similar) so this 
> isn't without downsides. There is some work being done to formalize the 
> idea of "managed nodes" (nodes that don't correspond to something running 
> chef-client itself, also referred to "external entities" some places), 
> which would lead to more global best-practicies for this kind of thing. For 
> now, though, you can certainly one-off it as long as you make sure all your 
> other searches are carefully written (possibly add a "NOT managed:true" 
> filter in some places). Hope this helps!
> 
> --Noah
> 


Didn't realise fake nodes were possible. Given its a complete new environment 
getting rolled out, I'll certainly give this approach a try. Thanks!