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Stoyan Petkov

2012-Sep-18 14:44 UTC

[Puppet Users] Looping through a list of values - ENC

Hello All,

I am trying to create a bunch of apache .conf files by reading data from 
a database. My script returns a list of values from the database in YAML 
form:

---
classes:
   - apache
   - dummy
parameters:
   domains: ''domains1,domains2,domains3''
   puppet_server: dist
   users: ''user1, user2''


and I''d like to pass the domains and users arrays to a definition:

   define vhostvirt() {
     file { "/tmp/${wpdomain}":
      #content => template("apache/vhost.conf.erb"),
      owner => ''root'',
      group => ''root'',
      mode => ''777'',
      ensure => present,
     }
   }

to create the domain.conf files for me. Unfortunately, I cannot figure 
out the correct syntax and aprroach to solving this problem.

Could somebody help please ?

Thanks!


Stoyan

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Stephen Gran

2012-Sep-18 15:22 UTC

head link

Re: [Puppet Users] Looping through a list of values - ENC

Hi,

On Tue, 2012-09-18 at 19:44 +0500, Stoyan Petkov wrote:> Hello All,
> 
> I am trying to create a bunch of apache .conf files by reading data
> from a database. My script returns a list of values from the database
> in YAML form:
> 
> ---
> classes:
>   - apache
>   - dummy
> parameters:
>   domains: ''domains1,domains2,domains3''
>   puppet_server: dist
>   users: ''user1, user2''
That looks like just a comma-separated string being returned, which is
fine.  We need an array to do what you want, however, so something like:

$vhost_list = split($domains, '','')

vhostvirt { $vhost_list: }


This will create one vhostvirt for each entry in $domains.

Cheers,
-- 
Stephen Gran
Senior Systems Integrator - guardian.co.uk

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Stoyan Petkov

2012-Sep-18 16:26 UTC

head link

Re: [Puppet Users] Looping through a list of values - ENC

Thanks Stephen! That did the trick (although I tried it a few times but 
to no avail.), however, I now see that I didn''t describe the whole
picture.

The definition seems ok but the template contains:

<VirtualHost *:80>
   ServerName <%= name %>
   ServerAlias www.<%= name %>
   DocumentRoot /home/<%= name %>/public_html
   SuexecUserGroup <%= user %> <%= user %>
   <Directory "<%= docroot %>" >
       AllowOverride None
       Order allow,deny
       Allow from all
       Options +SymlinksIfOwnerMatch +Includes
   </Directory>
   ErrorLog /var/log/httpd/<%= user %>/wp_domain-error_log
   CustomLog /var/log/httpd/<%= user %>/wp_domain-access_log combined
   CustomLog /var/log/httpd/<%= user %>/wp_domain-bytes_log "%I
%O"
</VirtualHost>


and for each domain I''d like to match a user, effectively passing an 
associative array to the definition:

---
classes:
   - apache
   - dummy
parameters:
   puppet_server: dist
   vhost_info:
"''domains1=>user1'',''domains2=>user2'',''domains3=>user3''"


Is that doable in puppet ?

Thanks!

On 09/18/2012 08:22 PM, Stephen Gran wrote:> Hi,
>
> On Tue, 2012-09-18 at 19:44 +0500, Stoyan Petkov wrote:
>> Hello All,
>>
>> I am trying to create a bunch of apache .conf files by reading data
>> from a database. My script returns a list of values from the database
>> in YAML form:
>>
>> ---
>> classes:
>>    - apache
>>    - dummy
>> parameters:
>>    domains: ''domains1,domains2,domains3''
>>    puppet_server: dist
>>    users: ''user1, user2''
> That looks like just a comma-separated string being returned, which is
> fine.  We need an array to do what you want, however, so something like:
>
> $vhost_list = split($domains, '','')
>
> vhostvirt { $vhost_list: }
>
>
> This will create one vhostvirt for each entry in $domains.
>
> Cheers,
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Stephen Gran

2012-Sep-18 16:30 UTC

head link

Re: [Puppet Users] Looping through a list of values - ENC

Hi,

On Tue, 2012-09-18 at 21:26 +0500, Stoyan Petkov wrote:> Thanks Stephen! That did the trick (although I tried it a few times but 
> to no avail.), however, I now see that I didn''t describe the whole
picture.
> 
> The definition seems ok but the template contains:
...
> and for each domain I''d like to match a user, effectively passing
an
> associative array to the definition:
> 
> ---
> classes:
>    - apache
>    - dummy
> parameters:
>    puppet_server: dist
>    vhost_info:
"''domains1=>user1'',''domains2=>user2'',''domains3=>user3''"
> 
> 
> Is that doable in puppet ?
Nearly.  The problem you''ll run into is that, since there are no loop
iterators in the puppet DSL (why, oh why, still?) you end up not being
able to do something like:

virt_host { $array: user => $hash[$name] }

(where $name is the array entry, and you can dynamically pluck it out of
the hash as you go).  That would be nice, but no.

You''ll have to do something like pass the associative array to the
define, and in the define pull back the values to be used in the
template based on the key $name.  Something like:

define vhostvirt($data) {

    $user    = $data[$name]
    $docroot = $data[$name]

    file { "/tmp/${name}":
     #content => template("apache/vhost.conf.erb"),
     owner => ''root'',
     group => ''root'',
     mode => ''777'',
     ensure => present,
    }
}

That should be enough to get you going.

Good luck,
-- 
Stephen Gran
Senior Systems Integrator - guardian.co.uk

Please consider the environment before printing this email.
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Puppet users - Sep 2012 - Looping through a list of values - ENC

[Puppet Users] Looping through a list of values - ENC

Re: [Puppet Users] Looping through a list of values - ENC

Re: [Puppet Users] Looping through a list of values - ENC

Re: [Puppet Users] Looping through a list of values - ENC