Choon Ming Goh, System Administrator at OnApp Malaysia, gave a presentation on how OnApp implements version control. Since they have quite a few repositories, this is all puppetised and that is quite a nice way of doing version control.

1. Version Control with Puppet
Choon Ming Goh
CDN Division
Choonming.goh@onapp.com

2. About
System Administrator
Backend Developer
Puppet user
Cloud industry
Builds CDN software

3. Why version control?

4. Versioning

5. Coordination

6. Centralised repository

7. Accountability

8. Experimentation

9. What do I use?

10. Git and Subversion

11. How do I do that?

12. Defined Types

13. define subversion::create($user = false, $group = false)
{
include subversion::aflexi
$user_real = $user ? { false => 0, default => $user }
$group_real = $group ? { false => 0, default => $group }
Exec {
path => "/usr/bin:/bin:/opt/local/bin:/usr/local/bin",
}
exec { "svnadmin-create-$name":
command => "/usr/bin/svnadmin create $name",
creates => "$name/db",
user => $user_real,
group => $group_real,
environment => "HOME=''",
}
}

14. define git::workdir($repository, $local_container, $local_name = false, $post_checkout_script =
undef, $post_update_script = undef, $runas_user = "root", $runas_group = "root", $branch =
"master")
{
$owner_real = $owner ? { false => 0, default => $owner }
$group_real = $group ? { false => 0, default => $group }
$local_name_real = $local_name ? { false => $name, default => $local_name }
exec { "git-clone-$name":
command => "git clone --branch '$branch' '$repository' '$local_name_real'",
cwd => $local_container,
require => [ File["$local_container"], Package["git-core"]],
creates => "$local_container/$local_name_real/.git",
}
exec { "git-pull-$name":
command => "git pull",
cwd => "$local_container/$local_name_real",
require => Exec["git-clone-$name"],
}
}

15. What's next?

16. subversion::create { "/var/lib/svn/$svnrepo":
user => "www-data",
group => "www-data",
}

17. git::workdir { "mygitrepo":
repository => $portal_src,
local_container => "/etc/puppet/",
local_name => "mygitrepo",
branch => $portal_branch,
}

18. Why do I want to puppetize it?

19. Quick setup for another puppetmaster

20. Almost not necessary to change manifests manually ever!

21. Fix what you break policy

22. Questions?

23. Contact
Choonming.goh@onapp.com
Twitter - @choonming
IRC – Freenode #puppet, #myoss, #debian choonming
Skype – gchoonming (please identify yourself)
Gtalk – choonming2002 (please identify yourself)