[chef] Re: Re: Re: Recipes execution order

[Noah Kantrowitz < >]

Recipes and roles that you actually put in a run list should be 
self-contained. This means that they should both be order-independent and 
idempotent, so it shouldn't matter either way.

--Noah

On Jun 10, 2014, at 2:51 AM, Carlos Camacho 
<
 >
 wrote:

> Perfect,
> 
> But in my case I'm trying to model something in chef in which the
> order of cookbooks or recipes can vary.
> 
> For example:
> 
> Using
> DB and WEB roles.
> Apache and MySQL cookbooks.
> A set of recipes for each cookbook.
> 
> Now i want to create a node within the DB and WEB roles.
> 
> I want to know if there are cases in which is better to apply the WEB
> then the DB roles recipes or DB first and then WEB.
> 
> Any idea of situations like this? In which the order of the execution
> can improve the system behavior (For example, the execution time for
> all recipes, or roles, or environments)?
> 
> Cheers!!!
> 
> 
> 
> 
> On Tue, Jun 10, 2014 at 11:16 AM, Noah Kantrowitz 
> <
 >
>  wrote:
>> 
>> On Jun 10, 2014, at 1:18 AM, Carlos Camacho 
>> <
 >
>>  wrote:
>> 
>>> Hello!!!
>>> 
>>> I'm trying to do some research on how evaluate chef recipes when they
>>> are executed.
>>> 
>>> For example:
>>> 
>>> I have a lot of recipes inside my Apache2 cookbook.
>>> 
>>> default.rb
>>> god_monitor.rb
>>> iptables.rb
>>> logrotate.rb
>>> ...
>>> ...
>>> ...
>>> 
>>> Is there a way to establish a weight for the recipes order??..
>>> 
>>> A) default.rb -> god_monitor.rb -> iptables.rb -> logrotate.rb = 2.3
>>> B) default.rb -> iptables.rb -> god_monitor.rb -> logrotate.rb = 3.6
>>> C) logrotate.rb -> default.rb -> god_monitor.rb -> iptables.rb = 1
>>> D) default.rb -> god_monitor.rb -> iptables.rb -> logrotate.rb = 6.1
>>> 
>>> In this case is better to execute D than, B than, A than C.
>> 
>> Recipes execute in the order you tell them to. First the run list is 
>> recursively expanded so roles are replaced by their run list until you 
>> just have a list of recipes. Then each is executed in order. If, while 
>> executing, it hits an include_recipe, then it executes that recipe at that 
>> point. All other file types where it loads all of them are executed is 
>> ASCII sort order.
>> 
>> --Noah
>>

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