.. include:: /_includes/all.rst

.. _use_external_databases:

**********************
Use external databases
**********************

**Table of Contents**

.. contents:: :local:


Why
===

Some people or companies might have concerns with dockerized databases and rather rely on good old
host-based database setups.
There could already be a database cluster in your network or you rather want to use AWS RDS or
other cloud-based solutions.

There are many reasons for having an external database.



Database on host os
===================

.. note::
   If the local database is listening on an IP address that is reachable over your current LAN,
   you can directly skip to: :ref:`use_external_databases_database_on_network`

In order to use an already existing database that is running on the host os, you need to
make sure the following is met:

1. Be able to connect to the host os from inside the container

   .. seealso:: :ref:`connect_to_host_os`

2. Configure your application to use the IP/CNAME of the host os

3. When starting the Devilbox, explicitly specify the service to use and exclude the databases:

   .. code-block:: bash

      # Explicitly specify services to start (otherwise all will start)
      # Omit the database
      host> docker-compose up -d php httpd bind redis

   .. seealso:: :ref:`start_the_devilbox`


.. _use_external_databases_database_on_network:

Database on network
===================

In order to use an already existing database that is running on the network, you need to
make sure the following is met:

1. Configure your application to use the IP/CNAME of the database host

2. When starting the Devilbox, explicitly specify the service to use and exclude the databases:

   .. code-block:: bash

      # Explicitly specify services to start (otherwise all will start)
      # Omit the database
      host> docker-compose up -d php httpd bind redis

   .. seealso:: :ref:`start_the_devilbox`


Database on internet
====================

In order to use an already existing database that is running on the network, you need to
make sure the following is met:

1. Configure your application to use the IP/CNAME of the database host

2. When starting the Devilbox, explicitly specify the service to use and exclude the databases:

   .. code-block:: bash

      # Explicitly specify services to start (otherwise all will start)
      # Omit the database
      host> docker-compose up -d php httpd bind redis

   .. seealso:: :ref:`start_the_devilbox`