[chef] Re: Re: apache rewrite rules for apache cookbook

[Bryan Berry < >]

great ideas Andrea, btw Auguri, buon anno ;)

> - what if you need several rules in a specific order? Should source, target 
> and flags be within an array?

yeah they should be

I thought about this more and should fit w/in the data_bag for an
application like we see w/ the application cookbook, rather than just
for rewrite rules.


file: data_bags/applications/my_esb.json
{
   "rewrite_rules": [
     . . .
]
}

This handles the case where rewrite rules for one application need to
be in order but not where the rewrite rules for one application need
to be process before another.

This strategy also doesn't tie the rules to a specific virtual host. I
need to put more thought into this.

On Mon, Jan 9, 2012 at 9:50 AM, Andrea Campi
<
 >
 wrote:
> Bryan,
>
> A couple of questions come to mind:
>
> - what if you need several rules in a specific order? Should source, target 
> and flags be within an array?
> - how would you apply different rules to different front ends? Maybe add a 
> roles key to the bag, and skip the entry unless the node has one of them?
>
> IMHO an LWRP is the way to go for this. These days my personal rule of 
> thumb is: LWRP for generic, very reusable pieces; definitions for 
> higher-level functionality.
>
> On Jan 9, 2012, at 7:38 AM, Bryan Berry 
> <
 >
>  wrote:
>
>> Has anyone done any work modeling rewrite rules or ajp proxies with Chef?
>>
>> Here is what I have in mind for the apache rewrite rules. Store the
>> individual rules in data_bags and create them using an LWRP.
>>
>> data_bag/front_end_rewrites/main_page.json
>> {
>> "source": "http://www.example.com/*";,
>> "target": "http://backend1.example.com/";,
>> "flags": "P"
>> }
>>
>> file: apache_proxy/recipes/default.rb
>>
>> include_recipe "apache"
>> include_recipe "apache::mod_rewrite"
>>
>> rules = data_bag_item('front_end_rewrites')
>>
>> rules.each do |source,target,flags|
>>   apache_rewrite do
>>      source source
>>      target target
>>      flags flags
>>   end
>> end
>>
>> Does anyone see any problems w/ this approach?
>>
>> Since the apache cookbook currently uses definitions, should I create
>> a new definition for apache_rewrite or create an LWRP? I have the
>> impression that LWRPs are now preferred to definitions.
>>
>> Modeling ajp rules would be significantly more complex than the apache
>> rewrite rules. I haven't put much thought into them yet.