.. include:: /_includes/all.rst

.. _add_custom_cname_records:

****************************
Add custom CNAME DNS entries
****************************

You can add an infinite number of custom
|ext_lnk_wikipedia_cname| records that will be available in your
running Docker container.
If Auto-DNS is turned on, those records will be available on your host operating system as well.

.. seealso:: :ref:`setup_auto_dns`


**Table of Contents**

.. contents:: :local:


Why and what?
=============

This might be useful if you have an IP address or hostname on your LAN or any other domain which
you want to expose to your container by a different CNAME of your choice.

Think of it as setting your ``/etc/hosts``, but which will be distributed accross all hosts which
are using the Devilbox' bundled DNS server.

How?
====

Adjust the :ref:`env_extra_hosts` variable inside ``.env`` to add as many CNAME's as you need.

As an example, to create a CNAME ``mywebserver.com`` pointing to ``172.16.238.1``, change your
.env file as shown below:

.. code-block:: bash
   :caption: .env

   EXTRA_HOSTS=mywebserver.loc=172.16.238.1

.. seealso:: See :ref:`env_extra_hosts` for an in-depth explanation with multiple examples.