Rudder

The license header would become:

This file is part of Rudder.

Rudder is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

In accordance with the terms of section 7 (7. Additional Terms.) of
the GNU General Public License version 3, the copyright holders add
the following Additional permissions:
Notwithstanding to the terms of section 5 (5. Conveying Modified Source
Versions) and 6 (6. Conveying Non-Source Forms.) of the GNU General
Public License version 3, when you create a Related Module, this
Related Module is not considered as a part of the work and may be
distributed under the license agreement of your choice.
A "Related Module" means a set of sources files including their
documentation that, without modification of the Source Code, enables
supplementary functions or services in addition to those offered by
the Software.

Rudder is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Rudder.  If not, see <http://www.gnu.org/licenses/>.

I added a reference to Rudder, as advised in http://www.gnu.org/licenses/gpl-howto.en.html:
For programs that are more than one file, it is better to replace “this program” with the name of the program, and begin the statement with a line saying “This file is part of NAME”.

Alexis MOUSSET wrote:

Inventory of references to AGPL¶

Complete repos (headers, LICENSE):

• rudder
• ldap-inventory
• cf-clerk
• rudder-plugin-itop ?
• rudder-plugin-external-node-information ?

Yep, and also plugin "helloworld"

And agree for the "this file is part of .."