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A Puppet module that can construct files from fragments.
Please see the comments in the various .pp files for details
as well as posts on my blog at www.devco.net
Released under the Apache 2.0 licence
USAGE:
If you wanted a /etc/motd file that listed all the major modules
on the machine. And that would be maintained automatically even
if you just remove the include lines for other modules you could
use code like below, a sample /etc/motd would be:
Puppet modules on this server:
-- Apache
-- MySQL
# class to setup basic motd, include on all nodes
class motd {
concat{"/etc/motd":
owner => root,
group => root,
mode => 644
}
concat::fragment{"motd_header":
content => "\nPuppet modules on this server:\n\n",
order => 1,
}
}
# used by other modules to register themselves in the motd
define motd::register($content="", $order=10) {
if $content == "" {
$body = $name
} else {
$body = $content
}
concat::fragment{"motd_fragment_$name":
target => "/etc/motd",
content => " -- $body\n"
}
}
# a sample apache module
class apache {
include apache::install, apache::config, apache::service
motd::register{"Apache": }
}
KNOWN ISSUES:
- In 0.24.8 you will see inintended notifies, if you build a file
in a run, the next run will also see it as changed. This is due
to how 0.24.8 does the purging of unhandled files, this is improved
in 0.25.x and we cannot work around it in our code.
CHANGELOG:
- 2010/02/19 - initial release
- 2010/03/12 - add support for 0.24.8 and newer
- make the location of sort configurable
- add the ability to add shell comment based warnings to
top of files
- add the ablity to create empty files
- 2010/04/05 - fix parsing of WARN and change code style to match rest
of the code
- Better and safer boolean handling for warn and force
- Don't use hard coded paths in the shell script, set PATH
top of the script
- Use file{} to copy the result and make all fragments owned
by root. This means we can chnage the ownership/group of the
resulting file at any time.
- You can specify ensure => "/some/other/file" in concat::fragment
to include the contents of a symlink into the final file.
- 2010/04/16 - Add more cleaning of the fragment name - removing / from the $name
CONTRIBUTORS:
Paul Elliot - Provided 0.24.8 support, shell warnings and empty file
creation support.
Chad Netzer - Various patches to improve safety of file operations
- Symlink support
David Schmitt - Patch to remove hard coded paths relying on OS path
- Patch to use file{} to copy the resulting file to the
final destination. This means Puppet client will show
diffs and that hopefully we can change file ownerships
now
CONTACT:
R.I.Pienaar - rip@devco.net / www.devco.net / @ripienaar
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