Puppet users - Jun 2011 - How to do "array interpolation"?

Hello all, sort of a puppet newbie here,

I have some constructs that are like so:

class hosts {
   file {"/etc/hosts":
      owner  => root,
      group  => root,
      mode   => 644,
      source => ["puppet://puppet/files/etc/hosts.$hostname",
                 "puppet://puppet/files/etc/hosts.$operatingsystem",
                 "puppet://puppet/files/etc/hosts"]
   }
}

And I have lots of them, for various reasons.  It seems like a real
waste to have to keep on typing out those 3-5 lines for where the
source of these things are from.  So I thought I could do something
like the following.  Having all those variables in one place, being
able
to add to the search path easily:

$base = "puppet://puppet.foo.bar/files"

$search = [
  "${base}/${host}",
  "${base}/${operatingsystem}",
  "${base}/default"
]

class hosts {
   file {"/etc/hosts":
      owner  => root,
      group  => root,
      mode   => 644,
      source => "${search}/etc/hosts";
   }
}


But that definitely does not do what I thought it would.  Anyone have
a method of
making the above type of thing work?

-Toby.

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com.
To unsubscribe from this group, send email to
puppet-users+unsubscribe@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en.

Hi,

On 06/08/2011 10:40 PM, Toby wrote:
> Hello all, sort of a puppet newbie here,
> 
> I have some constructs that are like so:
> 
> class hosts {
>    file {"/etc/hosts":
>       owner  => root,
>       group  => root,
>       mode   => 644,
>       source => ["puppet://puppet/files/etc/hosts.$hostname",
>                 
"puppet://puppet/files/etc/hosts.$operatingsystem",
>                  "puppet://puppet/files/etc/hosts"]
>    }
> }
> 
> And I have lots of them, for various reasons.  It seems like a real
> waste to have to keep on typing out those 3-5 lines for where the
> source of these things are from.  So I thought I could do something
> like the following.  Having all those variables in one place, being
> able
> to add to the search path easily:
> 
> $base = "puppet://puppet.foo.bar/files"
> 
> $search = [
>   "${base}/${host}",
>   "${base}/${operatingsystem}",
>   "${base}/default"
> ]
> 
> class hosts {
>    file {"/etc/hosts":
>       owner  => root,
>       group  => root,
>       mode   => 644,
>       source => "${search}/etc/hosts";
>    }
> }
you typically want to wrap your file resources in a define like

define remote_file($url="puppet://puppet.foo.bar/files",$path) {
  file { "$name": source => [
    "$url/$path.$host",
    "$url/$path.$operatingsystem",
    "$url/$path" ],
  }
}

There are some tricks to dynamically pass other file parameters, but
this is the gist of it.

HTH,
Felix

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com.
To unsubscribe from this group, send email to
puppet-users+unsubscribe@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en.