devilbox/docs/howto/dns/add-project-dns-entry-on-linux.rst
2018-07-26 09:38:45 +02:00

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.. _howto_add_project_hosts_entry_on_linux:
********************************
Add project hosts entry on Linux
********************************
On Linux, custom DNS entries can be added to the ``/etc/hosts`` and will take precedence over the
same entries provided by any DNS server.
**Table of Contents**
.. contents:: :local:
Assumption
==========
In order to better illustrate the process, we are going to use two projects as an example.
See the following table for project directories and :ref:`env_tld_suffix`.
+-------------------+------------+--------------------------+-----------------------+
| Project directory | TLD_SUFFIX | Project URL | Required DNS name |
+===================+============+==========================+=======================+
| project-1 | ``loc`` | http://project-1.loc | ``project-1.loc`` |
+-------------------+------------+--------------------------+-----------------------+
| www.project-1 | ``loc`` | http://www.project-1.loc | ``www.project-1.loc`` |
+-------------------+------------+--------------------------+-----------------------+
Step by step
------------
When using Docker on Linux you can use ``127.0.0.1`` for the IP address.
1. Open ``/etc/hosts`` with root privileges or via ``sudo`` with your favorite editor
.. code-block:: bash
host> sudo vi /etc/hosts
2. Add DNS records for the above listed examples:
.. code-block:: bash
:caption: /etc/hosts
127.0.0.1 project-1.loc
127.0.0.1 www.project-1.loc
3. Safe the file and verify the DNS entries with the ``ping`` command
.. code-block:: bash
host> ping -c1 project-1.loc
PING project-1.loc (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.066 ms
.. code-block:: bash
host> ping -c1 www.project-1.loc
PING www.project-1.loc (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.066 ms