.. _Participating in Customer Experience Program:

Participating in Customer Experience Program
--------------------------------------------

By participating in the Customer Experience Program (CEP) you agree to send to Virtuozzo information about configuration of your physical server and virtual environments, the way you use Virtuozzo products, and technical issues that you encounter.

.. note:: No private information like your name, e-mail address, phone number, or keyboard input will be collected.

The program is voluntary and helps improve Virtuozzo products to better fit your needs.

When installing Virtuozzo in the attended mode, you automatically join CEP. You can, however, opt out of the program at any time by stopping and disabling the ``disp-helper`` service:

::

    # systemctl stop disp-helper
    # systemctl disable disp-helper

By default, Virtuozzo will collect information once a week, although you can change this interval. For example, to have the data collected every two weeks, do as follows:

1. In the configuration file ``/etc/vz/disp_helper.json``, change the ``report_period`` value to ``14d``: 

   ::

       "report_period": "14d",

2. Restart ``disp-helper`` to apply changes:

   ::

       # systemctl restart disp-helper

To fine-tune which information about your physical server or virtual environments is collected, you can disable or enable corresponding ``.py`` scripts in the ``/usr/share/virtuozzo/cep-scripts`` directory. For example, to prevent collection of data about your virtual environments, you can disable the ``libvirt_guests.py`` script as follows:

::

    # chmod a-x libvirt_guests.py

To re-enable the script, run

::

    # chmod a+x libvirt_guests.py

When installing Virtuozzo in the unattended mode, you can specify the ``cep`` parameter in the kickstart file. For more details, see the `Virtuozzo 7 PXE Installation Guide <http://docs.virtuozzo.com/virtuozzo_7_installation_using_pxe_guide/preparing-kickstart-file/virtuozzo-kickstart-options.html>`__.
