Puppet users - Feb 2013 - How do I generate a sequence number in a template

I''m trying to puppetize my PgPool install.

PgPool uses the convention:
backend_hostname0 = 
backend_port0 = 
backend_weight0 = 
backend_data_directory0 = 
backend_flag0 = 

I''m using exported resources and concat to auto-detect postgres
instances.

My template for this chunk looks like:
<% Array(ipaddress).zip(Array(pgport)).each do |ipaddress,port| -%>
<% backend = 0 %>
backend_hostname<%= backend -%> = <%= ipaddress %>
backend_port<%= backend -%> = <%= port %>
backend_weight<%= backend -%> = 1
backend_data_directory<%= backend -%> = ''/db/pg''
backend_flag<%= backend -%> = ''ALLOW_TO_FAILOVER''
<% backend += 1 %>
<% end %>

I assumed that the backend = 0 / backend += 1 would work like a counter
as this  .each loop was iterated over.

However what I end up with is two stanza''s with
backend_hostname0
...etc...
backend_hostname0
...etc...

any ideas on how to make this happen?

Thanks

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On Mon, Feb 4, 2013 at 5:41 PM, David Kerr <kerr23@gmail.com> wrote:
> My template for this chunk looks like:
> <% Array(ipaddress).zip(Array(pgport)).each do |ipaddress,port| -%>
> <% backend = 0 %>
> backend_hostname<%= backend -%> = <%= ipaddress %>
> backend_port<%= backend -%> = <%= port %>
> backend_weight<%= backend -%> = 1
> backend_data_directory<%= backend -%> = ''/db/pg''
> backend_flag<%= backend -%> = ''ALLOW_TO_FAILOVER''
> <% backend += 1 %>
> <% end %>
>
I think your problem is you are re-initializing the ''backend''
variable each
iteration of the loop.  Try:

<% backend = 0 -%>
<% Array(ipaddress).zip(Array(pgport)).each do |ipaddress,port| -%>
backend_hostname<%= backend -%> = <%= ipaddress %>
backend_port<%= backend -%> = <%= port %>
backend_weight<%= backend -%> = 1
backend_data_directory<%= backend -%> = ''/db/pg''
backend_flag<%= backend -%> = ''ALLOW_TO_FAILOVER''
<% backend += 1 -%>
<% end %>

Cheers,

Aaron Russo
IST Infrastructure Services, Unix Group
UC Berkeley
---
Desk:   510-643-5550Mobile: 510-206-1532
IM:     arusso@berkeley.edu (XMPP/Jabber)

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yeah, i saw that, and fixed it, but still no good.

i had thought/hoped that i deleted this post and posted my next one which 
you also kindly answered.

On Monday, February 4, 2013 9:05:24 PM UTC-8, Aaron Russo
wrote:
>
>
> On Mon, Feb 4, 2013 at 5:41 PM, David Kerr <ker...@gmail.com
<javascript:>
> > wrote:
>
>> My template for this chunk looks like:
>> <% Array(ipaddress).zip(Array(pgport)).each do |ipaddress,port|
-%>
>> <% backend = 0 %>
>> backend_hostname<%= backend -%> = <%= ipaddress %>
>> backend_port<%= backend -%> = <%= port %>
>> backend_weight<%= backend -%> = 1
>> backend_data_directory<%= backend -%> =
''/db/pg''
>> backend_flag<%= backend -%> =
''ALLOW_TO_FAILOVER''
>> <% backend += 1 %>
>> <% end %>
>>
>
> I think your problem is you are re-initializing the
''backend'' variable
> each iteration of the loop.  Try:
>
> <% backend = 0 -%>
> <% Array(ipaddress).zip(Array(pgport)).each do |ipaddress,port| -%>
> backend_hostname<%= backend -%> = <%= ipaddress %>
> backend_port<%= backend -%> = <%= port %>
> backend_weight<%= backend -%> = 1
> backend_data_directory<%= backend -%> = ''/db/pg''
> backend_flag<%= backend -%> = ''ALLOW_TO_FAILOVER''
> <% backend += 1 -%>
> <% end %>
>
> Cheers,
>
> Aaron Russo
> IST Infrastructure Services, Unix Group
> UC Berkeley
> ---
> Desk:   510-643-5550Mobile: 510-206-1532
> IM:     aru...@berkeley.edu <javascript:> (XMPP/Jabber)
>
>  
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