Puppet resource dependency

Question

Hello everybody,

When I do puppet apply, I get the error:

Warning: Scope(Mod::Cl[title]): Can't load '/tmp/file.yaml' File does not exist! Error: Evaluation Error: Error while evaluating a Resource Statement, Evaluation Error: Operator '[]' is not applicable to an Undef Value. 

I specify that loadyaml is a function of stdlib module

However, i want to execute file resource before define resource

Someone can help me ?

 class mod::princ ( file { '/tmp/file.yaml': ensure => file, owner => 'root', group => 'root', mode => '0644', source => "puppet:///modules/othermod/file.yaml", before => Mod::Cl["title"], }-> Mod::Cl{ "title" : tmp_file => "/tmp/file.yaml", } } define mod::cl ( String $tmp_file, ){ $tmp = loadyaml("$tmp_file") $tmp[var].each |Integer $i, Hash[String,String] $var| { $mark=$var['Mark'] } } 

Answer 1

As Dominic mentioned in his comment, the loadyaml function is run at compile-time.

If you are running Puppet via a Puppet Master/Server and puppet agent, this happens on the server, before the manifest is sent to the client, not on the client itself.

In addition, the loadyaml function is run at compile, not execution - so the file needs to exist before the Puppet run takes place.

I'd query why you're taking this approach with your Puppet code - you don't really explain what the code is for, or what your intended end-state looks like.

You can get the same results using Hiera.

hieradata/common.yaml

--- mod::princ::data: entry: foo: bar yrtne: oof: rab 

modules/mod/manifests/princ.pp

class mod::princ ( Hash $data ) { $data.each |Integer $i, Hash $elem, $var | { $mark=$var['Mark'] } }