[Puppet Users] Conditional directory creation

Hi,

I have a modul which created the vhosts and based on the variables
defined there i am creating nagios defacement host cfg.
My problem is that I can't conditionally decide if the file should be
created, based on the variable which will get content in the node
config:
When the condition get evaluated $monstring still empty since it gets
its content in the node config later, so no file will be created.
If i remove the condition there will be hundreds of nagios cfg which
should not be created.
Can you give me some idea how can i make this work, so blog file gets
created and blog1 not.

This is the important part of my resource type

define vhost ($servername = "${hostname}.${domain}", $serveralias =
[ "www.${hostname}.${domain}" ], $inorout = "1", $owner = "root",
$group = "root", $enabled = "link", $rewrite = "", $ssl = "false",
$cacert = "", $certchain = "", $certfile = "", $keyfile = "", $pringo
= "false", $pringodir = "pringo4", $staging = "false", $mode = '755',
$monstring = '' )

if ! $monstring == "" {
file{"/root/${servername}.cfg":
ensure => present,
content => template("${module_name}/
defacementmon.erb"),
}
}

node config:

import "apache2/vhost.pp"

vhost{'blog.domain.com':
servername => 'blog.domain.com',
serveralias => [ 'prod-blog.domain.com' ],
enabled => 'link',
require => Mount['/var/www'],
monstring => 'string',
inorout => '0';
}

vhost{'blog1.domain.com':
servername => 'blog1.domain.com',
serveralias => [ 'prod-
blog1.domain.com' ],
enabled => 'link',
require => Mount['/var/www'],
inorout => '0';
}

I hope it is understandable, my english is not the best.

Anybody got any idea on this?
I am really stuck with this one.

Hi,

can't see anything wrong off the top of my head except you use an import statement instead of an include.
http://docs.puppetlabs.com/guides/language_guide.html#importing-manifests

Have you tried testing for a string like 'false'? Just to see if something odd not going on.
file{"/root/${servername}.cfg":

Not at a computer so can't test the code till tomorrow (that's about 8 hours away).

Sorry,
Den

Hey Den, thanks for the answer

I changed the import to include it was just a leftover when for some reason
include wasnt good enough to be able to use defined resource types with
some older version.

This false solution isnt working sadly still that monstring get evaluated
with the default value and never with the later defined value.

Hi Peter,

take a look at this:

class testme {
define vhost ($servername = "${hostname}.${domain}", $serveralias =
[ "www.${hostname}.${domain}" ], $inorout = "1", $owner = "root",
$group = "root", $enabled = "link", $rewrite = "", $ssl = "false",
$cacert = "", $certchain = "", $certfile = "", $keyfile = "", $pringo
= "false", $pringodir = "pringo4", $staging = "false", $mode = '755',
$monstring = undef ) {

if $monstring {
file{"/root/test_${servername}.cfg":
ensure => present,
content => "${servername}_defacementmon.erb",
}
}
}
}


class runme {
include testme
testme::vhost{'blog.domain.com':
servername => 'blog.domain.com',
serveralias => [ 'prod-blog.domain.com' ],
enabled => 'link',
monstring => 'string',
inorout => '0',
}

testme::vhost{'blog1.domain.com':
servername => 'blog1.domain.com',
serveralias => [ 'prod-blog1.domain.com' ],
enabled => 'link',
inorout => '0',
}

}

include runme

Now the monstring, if it is not declared remains 'undef'. We now just
test on the existence of monstring. If it is declared it you create
the file, if not the file is not created.

In my quick testing it appeared to work, but may not be exactly
suitable for your env.

That help?
Den

Cool thx Den, undef worked like a charm.

much appriciated!