On Thursday, October 4, 2012 11:05:08 AM UTC-5, timo wrote:
Here's one for you!
We're rolling out some zip files to our servers using Puppet, there's an
exec that unzips them, the zip file is then deleted. I need to remove the
old versions of the unzipped directory using Puppet when we rol out a newer
version.
So, on my client/node machine I have the below directories.
/opt/1234
/opt/12345
/opt/123456
What I need to do, is rm the the above directories when we roll out
1234567.zip. When the newest directory (1234567) is unzipped, the Puppet
exec sym links it to /opt/java. So could I remove the older directores that
are not sym linked?
Maybe using:
tidy { tidy_opt:
path => "/opt/",
age => "1d",
backup => false,
matches => [ "some nice ruby here that finds the non sym linked directories??" ],
}
There are several ways you could approach this, and which would be best
depends on several factors. It would be ideal if the directories you want
to manage this way were located in a parent directory that you could be
sure would hold only files for this general purpose. I would not feel
comfortable assuming that /opt satisfies that criterion, but you could set
up a subdirectory such as /opt/java_version for the purpose.
Next you should consider whether you need the test for which directory is
currently symlinked. You're managing the deployment of those directories
and (I hope) the symlink itself via Puppet, so you don't really need to
test. Instead, you can just rely on Puppet to get it done, or else to fail
before any damage is done. For example, you can do something like this:
$java_base_directory = '/opt/java_version'
$current_java_version = '123456'
# Put the current version in place, update the
# symlink, etc.; perhaps you have a defined
# type that handles it?
deploy_java_version { "${current_java_version}":
base_directory => "${java_base_directory}"
}
# Clean up other versions
file { "${java_base_directory}":
ensure => directory,
recurse => remote,
purge => true,
ignore => "${java_base_directory}/${current_java_version}",
require => Deploy_java_version["${current_java_version}"]
}
You may need also a "source" parameter, but it can (and should) point to an
empty directory on the master's file server.
There are other approaches you could consider, but other than an Exec, all
of them either require you to maintain a list of the directories you want
to ensure have been removed, or else to create and deploy a custom fact.
Neither of those is hard, but they would be bigger and a bit messier than
the above approach.
John
