Thanks a lot Matt, the debug command was enough to find the problem. After 
including it in the playbook I found this:

File "/usr/lib/python2.7/encodings/utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in 
position 2: ordinal not in range(128)

So, it seems that my dictionary had an invisible character there making the 
variable unusable. Thanks a lot Matt, you made my day ;)!!!

El viernes, 21 de marzo de 2014 13:24:37 UTC+1, Matt Martz escribió:
>
> From the sound of it, either that variable doesn't exist or for some 
> reason it isn't being expanded.
>
> You could try adding a task above that one to inspect it:
>
> - debug: var=php_ini_settings
>
> You might also try:
>
> with_items: "{{ php_ini_settings }}" 
>
> But you really shouldn't need to.  The error you are getting is saying 
> that the data it is looping over is a string, and not a dict/hash.
> -- 
> Matt Martz
> [email protected] <javascript:>
>
> On March 21, 2014 at 7:20:25 AM, Simón Muñoz ([email protected]<javascript:>) 
> wrote:
>
> Thanks for your answer Matt, but unfortunately it hasn't worked :(. 
>
>  - name: Setting log level in development
>   lineinfile:
>     dest=/etc/php5/fpm/php.ini
>     regexp="{{ item.regexp }}"
>     line="{{ item.line }}"
>     backrefs=yes
>   with_items: php_ini_settings
>  
>
>  fatal: [192.168.33.9] => One or more undefined variables: 'str object' 
> has no attribute 'regexp'
>
>  
>
>  
> El viernes, 21 de marzo de 2014 13:15:07 UTC+1, Matt Martz escribió: 
>>
>>  There are a couple of things going on here, but the end solution I 
>> believe is going to be:
>>  
>>  with_items: php_ini_settings
>>  
>>  What you are doing is creating a list of lists, and php_ini_settings is 
>> being treated as a string.  Since php_ini_settings is already a list, just 
>> use the line I referenced above.
>>  
>> -- 
>> Matt Martz
>> [email protected]
>>
>> On March 21, 2014 at 12:10:24 AM, Simón Muñoz ([email protected]) wrote:
>>
>>   Hi all,
>>
>> I have tried all that I could think about this, but I wasn't able to use 
>> a list inside a lineinfile call. This is my task code:
>>
>>  - name: php.ini hardening
>>   lineinfile:
>>     dest=/etc/php5/fpm/php.ini
>>     regexp="{{ item.regexp }}"
>>     line="{{ item.line }}"
>>     backrefs=yes
>>   with_items:
>>     - php_ini_settings
>>  
>>  And this is an example list:
>>
>>   # roles/php-fpm/vars/main.yml
>> ---
>> php_ini_settings:
>>   - regexp: "memory_limit = 128M"
>>     line: "{{ memory_limit }}"
>>   - regex: "post_max_size = 8M"
>>     line: "{{ post_max_size }}"
>>  
>>  The fatal error: 
>>  fatal: [192.168.33.9] => One or more undefined variables: 'str object' 
>> has no attribute 'regexp'
>>  
>>
>> Anyone has a clue about this? Thanks in advance!
>>
>>
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