Puppet users - Sep 2013 - Puppet to install and rollback using single module.

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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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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Hi,

Alessandro''s modules at http://github.com/example42 do install/rollback
all the time.

You might want to look at them how they do it.


Regards, David

On 2013-09-16 11:31, 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,
>
> --
> You received this message because you are subscribed to the Google
> Groups "Puppet Users" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to puppet-users+unsubscribe@googlegroups.com.
> To post to this group, send email to puppet-users@googlegroups.com.
> Visit this group at http://groups.google.com/group/puppet-users.
> For more options, visit https://groups.google.com/groups/opt_out.
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