Checking for the existence of a file

[Ted Fiedler]

I would like to check for the existence of a template file and if that template exists, use it otherwise move on. The file would obviously need to exist on the Puppet server, not the client. Here is my code.

$filetest = File.exists?("/etc/puppetlabs/puppet/modules/samba/templates/$hostname.erb")  

                if $filetest == "true" {

                    file { '/etc/samba/smb.conf':

                       notify  => Service["smb", "winbind"],

                       replace => 'no',

                       path => '/etc/samba/smb.conf',

                       ensure => file,

                       content => template("samba/smb.erb", "samba/${hostname}.erb"),

                       require => Package["samba"],

                    }

                } else {

                    file { '/etc/samba/smb.conf':

                       notify  => Service["smb", "winbind"],

                       replace => 'no',

                       path => '/etc/samba/smb.conf',

                       ensure => file,

                       content => template("samba/smb.erb"),

                       require => Package["samba"],

                    }

                }

 

I keep getting the error:

err: Could not retrieve catalog from remote server: Error 400 on SERVER: Syntax error at '.'; expected '}' at /etc/puppetlabs/puppet/modules/samba/manifests/init.pp:34 on node

when I run the following test, it seems to work fine, but if I modify my code above within puppet to use this, it fails also...

# cat test.rb 
$test = File.exists?("/etc/puppetlabs/puppet/modules/samba/templates/file.erb") 
print $test
# ruby test.rb 
true

Any ideas?

A million thanks in advance

Ted

[Ashley Penney]

You cannot use ruby code in Puppet directly, which is why this isn't working for you.

To do this you would need to write a "Puppet Function" as documented at http://docs.puppetlabs.com/guides/custom_functions.html.  This would then let you do something like:

if exists('/file') {

Functions always run on the master, not the agent, so this would then test for the file on the master.

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[Rilindo Foster]

This line here:

> content => template("samba/smb.erb", "samba/${hostname}.erb"),

What is your intention with having multiple .erb files per hostname? That might help us figure if there a different solution is warranted.

-Rilindo

[Ted Fiedler]

I have a base Samba config and then about 50 server specific samba shares. So I apply a base config to all the servers, then if that server has extra shares that are not in the base, it is included.