Make Puppet 3.8.1 Use Ruby Version 2.1

[Dan Gibbons]

Hi,

I'm running a Centos 7 server, puppet 3.8.1 and Ruby 2.1.0 but I'm having problems trying to get puppet to parse my ruby template which uses open3.capture3 (only available in ruby versions greater than).

It looks like when i call me template like:

template("windows/get_ssl_thumbprint_by_friendlyname.erb") 

which contains:

<%

   require 'open3'

....

stdout,stderr,status = Open3.capture3(cmd)

...

-%>

Results in a server parse error:

Error: Could not retrieve catalog from remote server: Error 400 on SERVER: Failed to parse template windows/get_ssl_thumbprint_by_friendlyname.erb:  Filepath: /etc/puppet/environments/vagrant/modules/windows/templates/get_ssl_thumbprint_by_friendlyname.erb

  Line: 11 Detail: undefined method `capture3' for Open3:Module

To me it looks like the server is parsing the template before handing to the client but it's using its built in ruby version of 1.8.7 which doesn't have the open3.capture3 method.

Is there any way I can get puppet to use the newer ruby version?

Thanks

Dan