[chef] Re: Re: Re: Re: How best to reprepresent a hosted site in Chef?

[Daniel DeLeo < >]

On Wed, Jun 2, 2010 at 1:31 PM, Dmitry V'yal 
<
 >
 wrote:
>
>>
>> Ohai!
>>
>> If the sites are all very similar except for some data, you can just
>> create them in a loop. Our documentation for libraries shows an
>> example of creating vhosts based on data in a SQL database:
>>
>> http://wiki.opscode.com/display/chef/Libraries
>>
>> If this looks appealing, but you don't currently have the data in a
>> database, you might want to use data bags to store the data:
>>
>> http://wiki.opscode.com/display/chef/Data+Bags
>>
>
> Hello Daniel.
>
> Data bags seem like a way to go. Now, speaking in terms of example at wiki
> page you gave, what if I want to remove some admins after I ran the recipe?
> I modify the bag, and what's next? Is there a way to give a more declarative
> semantics to things?

Chef doesn't provide any out-of-the-box policy enforcement features,
so it will not automatically remove something if you've removed it
from a recipe. You'll have to handle this on a case-by-case basis, but
in this case, you could move admins to a deleted admins databag and
handle it that way, or possibly determine which ones have been removed
by comparing etc/passwd with the databag. The Etc module could be
useful for this:

http://ruby-doc.org/stdlib/libdoc/etc/rdoc/classes/Etc.html

HTH,
Dan DeLeo

> Best wishes,
> Dmitry
>