Hi Neanudorn
Is very difficult... you could try but if you really want to do it properly
is going to take you a lot of time for all the modules. The main problem I
foresee is that adding things is easy, but removing them is hard as you
need to identify each of the objects that were added. Ie when you install a
package a lot of files and configurations are added, but when you remove it
some configuration files are left in place. Additionally if your
environment is virtualized then then why not to rebuild the instance with
the new setup? That is way easier than introduce so much complexity in your
manifests.
Said that if you still want to go with that approach, I think the best way
would be to use parametrized classes:
Ie:
class my_app (
ensure = present
) {
package {'my_package':
ensure => $ensure,
}
}
And then in the node declaration:
node /my_node/ {
class{'my_app':
ensure => present
}
}
You can then change the ensure parameter to remove that app...
Hope it makes sense.
Cheers
Juan
On Monday, September 16, 2013 10:31:10 AM UTC+1, Chatchai Neanudorn wrote:
>
> Hi all,
>
> I would like to provide installation and rollback for any module. Here are
> was I've tried but not work,
>
> At modules/katie/manifests/init.pp
>
> class katie::add {
> tag 'add'
> user {'katie':
> ensure => present,
> }
> }
> class katie::remove {
> tag 'remove'
> user {'katie':
> ensure => absent,
> }
> }
>
> class katie {
> include katie::remove, katie::remove
> }
>
> test command,
>
> [root@centos ~]# puppet agent --test --tags add
> Info: Retrieving plugin
> Info: Loading facts in /var/lib/puppet/lib/facter/pip_version.rb
> Info: Loading facts in /var/lib/puppet/lib/facter/python_version.rb
> Info: Loading facts in /var/lib/puppet/lib/facter/root_home.rb
> Info: Loading facts in /var/lib/puppet/lib/facter/puppet_vardir.rb
> Info: Loading facts in /var/lib/puppet/lib/facter/facter_dot_d.rb
> Info: Loading facts in /var/lib/puppet/lib/facter/concat_basedir.rb
> Info: Loading facts in /var/lib/puppet/lib/facter/pe_version.rb
> Error: Could not retrieve catalog from remote server: Error 400 on SERVER:
> Duplicate declaration: User[katie] is already declared in file
> /etc/puppet/modules/katie/manifests/init.pp:5; cannot redeclare at
> /etc/puppet/modules/katie/manifests/init.pp:12 on node centos.local
> Warning: Not using cache on failed catalog
> Error: Could not retrieve catalog; skipping run
> [root@centos ~]#
>
> If this is not the way to go, is there any alternative to get the
> install/rollback?
>
> Thanks you,
>
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