Puppet users - Aug 2013 - Copying multiple files to multiple locations

Hi,

I''m, still relatively new to Puppet, so there might be something I am 
overlooking.
Anyway, my situation is that I can install 1 or multiple tomcat instances 
on a machine, and in order for me to ensure that they can talk to all 
databases we run (test environments) I want to copy all DB drivers into 
each instance.

So basically I have a defined type for my tomcat instance, which does the 
installation of the tomcat binaries and configured the necessary files. Per 
instance I need to copy X files into the lib directory.
I wanted to do this with another defined type, so I could "loop"
through an
array of DB-drivers. However, because both instances would require the same 
files, I am running into the "duplicate declaration" error.

Is there any way to resolve this issue?
Thanks

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Hi Matthijs,
  You can try using array variable in file resource.This may solve your 
issue. Can you explain in detail. I mean the location of files and 
directory structures.

If you want to copy the same file content in several files refer following 
code snippet,You can use various files path  in array.
$file_names =
[''/root/t1'',/root/t2'',/root/t3'',/root/t4'']

file { $file_names:
  ensure => file,
  content => ''xyz'',
}

You can also use source => ''/root/xyz.txt'' tag/attribute of
file resource
for coping whole file.
This copied the ''xyz'' content in all the files present in
$file_name array
variables.


Thanks & Regards,
Rahul Khengare,

NTT DATA OSS Center Pune, India.**





On Friday, August 9, 2013 7:36:42 PM UTC+5:30, Matthijs Suringa
wrote:
>
> Hi,
>
> I''m, still relatively new to Puppet, so there might be something I
am
> overlooking.
> Anyway, my situation is that I can install 1 or multiple tomcat instances 
> on a machine, and in order for me to ensure that they can talk to all 
> databases we run (test environments) I want to copy all DB drivers into 
> each instance.
>
> So basically I have a defined type for my tomcat instance, which does the 
> installation of the tomcat binaries and configured the necessary files. Per
> instance I need to copy X files into the lib directory.
> I wanted to do this with another defined type, so I could "loop"
through
> an array of DB-drivers. However, because both instances would require the 
> same files, I am running into the "duplicate declaration" error.
>
> Is there any way to resolve this issue?
> Thanks
>
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On Friday, August 9, 2013 9:06:42 AM UTC-5, Matthijs Suringa
wrote:
>
> Hi,
>
> I''m, still relatively new to Puppet, so there might be something I
am
> overlooking.
> Anyway, my situation is that I can install 1 or multiple tomcat instances 
> on a machine, and in order for me to ensure that they can talk to all 
> databases we run (test environments) I want to copy all DB drivers into 
> each instance.
>
> So basically I have a defined type for my tomcat instance, which does the 
> installation of the tomcat binaries and configured the necessary files. Per
> instance I need to copy X files into the lib directory.
> I wanted to do this with another defined type, so I could "loop"
through
> an array of DB-drivers. However, because both instances would require the 
> same files, I am running into the "duplicate declaration" error.
>
> Is there any way to resolve this issue?
>
>
I think you are saying that for each Tomcat instance you want to ensure the 
same files present in the same directory (rather than in distinct, 
instance-specific directories).  The key problem with your approach to that 
is you are trying to manage the driver files as if they belong to 
individual instances, whereas they actually belong to Tomcat overall.

The available solutions fall into two categories:

   1. Give each Tomcat instance its own, separate copies of the files.
   2. Factor the affected file resources out of your Tomcat instance 
   definition, and instead manage them in one central place for all 
   instances.  The most likely way to do this would be to put them into a 
   class that the instance definition declares (which works because Puppet 
   classes are idempotent).

Example:

class tomcat::db_drivers {
  include ''tomcat''
  file { "$tomcat_root/lib/mysql.jar":
    ensure => ''present'',
    source => ''puppet://modules/tomcat/mysql.jar''
  }
  ...
}

define tomcat::instance(...) {
  include ''tomcat''
  include ''tomcat::db_drivers''

  # instance-specific resources ...
}


John

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