puppet ruby wrong number of arguments (1 for 0)

Question

First off, I know there are a lot of questions regarding this error and I have checked them all, mine is not solved using any of their solutions however.

I am working for the first time with Puppet / Ruby and am having the following issue.

I created this function:

module Puppet::Parser::Functions newfunction(:phpversion, :type => :rvalue) do %x["/usr/bin/php -r 'echo PHP_MAJOR_VERSION . \".\" . PHP_MINOR_VERSION;'"] end end

And when I call it in my manifest file using:

$phpversion = phpversion()

It throws, when I execute the agent, the error "Error: Could not retrieve catalog from remote server: Error 400 on SERVER: wrong number of arguments (1 for 0) at /etc/puppetlabs/puppet/modules/x/manifests/somefile.pp:123 on node foo.example.bar"

I tried adding |args| after the do statement and removing :type but it keeps throwing the same error. when I use $phpversion = phpversion it just thinks its a text string instead of a function (which I expected, but tried anyway).

Any help would be greatly appreciated.

Are you aware that this function will find the puppet master's php version, not the version on the node being configured? — Chris Pitman
– Chris Pitman, Commented Jun 24, 2015 at 13:51
At the time I wasn't and got pointed towards it by a colleague, thanks for the information though as I would've continued thinking it would've been the client's version. Either way I'm still quite curious as to how to solve this issue so I can prevent/fix it in the future — xorinzor
– xorinzor, Commented Jun 24, 2015 at 17:36

Peter Souter · Accepted Answer · 2015-06-24 22:49:47Z

If you're trying to get the version of php, it'd probably be easier to do it as a fact:

Facter.add(:phpversion) do setcode do if Facter::Util::Resolution.which('php') Facter::Util::Resolution.exec('/usr/bin/php -r 'echo PHP_MAJOR_VERSION . \".\" . PHP_MINOR_VERSION;'"').lines.first.split(/"/)[1].strip end end end

Put this a directory lib/facter/ in your module, then reference it in your manifest as $::phpversion

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