date:20111115

[Puppet Users] Re: Advocacy Material

2011-11-15 Thread Andreas Paul

Hi there,

I think that the customer case studies make excellent propaganda material:
http://puppetlabs.com/customers/case-studies/

Take a look at them, but maybe puppetlabs employees have some powerpoint 
presentations you need and are willing to share. :)

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[Puppet Users] Virtual Define-based resources can only be realized once

2011-11-15 Thread Stephan

Hi all,

here is what I have:

A module that is responsible to roll out and configure TSM (a backup
tool). Basically I need a text file that mentions all directories that
have to be backed up. I want to make it a virtual resource and let
other modules configure which parts of it have to be backed up, e.g.
configure in the apache module that the apache logs of each defined
virtual server have to be backed up:

The node.pp is configured like this:

apache::config {virtualserver1:
blah
}
apache:config {virtualserver2:
blah
}

@tsm::config { $hostname:
tsm_backup = [/custdir1,/custdir2]
}

The @ means this is a virtual Define-based resource, so it is not
implemented until it gets realized.

/custdir1 and /custdir2 denote custom directories that have to be
backed up, but aren't managed by other puppet modules.

One module is supposed to add some directories to tsm_backup, I use
this configuration inside the apache module's config.pp:

Tsm::Config| title == $hostname | {
tsm_backup + [$apache_logs,$docroot],
}

I can then use this array in the template for the conf file (dsm.sys,
virtualmountpoint and Domain, for those who know TSM). Up until here
it all works fine. The config file will contain /custdir1, /custdir2, /
apache/virtualserver1/logs, /apache/virtualserver2/logs, apache/
virtualserver1/docroot, apache/virtualserver2/docroot

But when I want to configure another module to also add its
directories to tsm_backup, so basically have another module, say
postfix config.pp which contains this:

Tsm::Config| title == $hostname | {
tsm_backup + [$postfix_logs],
}

It will either contain the apache backup dirs OR the postfix backup
dirs, depending on which | | it finds first, but never both.

This is unexpected, since if I use the same construct for non define-
based virtual resources, like a user (see
https://groups.google.com/group/puppet-users/browse_thread/thread/c13c1936dcd939fd/cff48a8c03734336
)

Does anybody have an idea?

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