installation: add section about unattended/automatic installation

Mention and briefly explain it. The main part of the documentation will
live in the Wiki for now as it applies to not just Proxmox Mail Gateway.

Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>
  [ TL: adapt to changes made in the wiki article ]
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

diff --git a/docs/installation.rst b/docs/installation.rst
index 55eddfb4e172d1b78613cb2ff1e35eece43bb66a..449bda8c00370dd12c614013a57d34752f90736c 100644 (file)
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -50,6 +50,22 @@ It includes the following:
 .. note:: During the installation process, the complete server
    is used by default and all existing data is removed.
 
+Install `Proxmox Backup`_ Server Unattended
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+It is possible to install {pve} automatically in an unattended manner. This
+enables you to fully automate the setup process on bare-metal. Once the
+installation is complete and the host has booted up, automation tools like
+Ansible can be used to further configure the installation.
+
+The necessary options for the installer must be provided in an answer file.
+This file allows the use of filter rules to determine which disks and network
+cards should be used.
+
+To use the automated installation, it is first necessary to prepare an
+installation ISO.  For more details and information on the unattended
+installation see `our wiki
+<https://pve.proxmox.com/wiki/Automated_Installation>`_.
+
 
 Install `Proxmox Backup`_ Server on Debian
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~