Helper script to emulate a local CNAME DNS by writing to /etc/hosts https://pypi.org/project/local-cname/
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Henning Jacobs 65e1f3f47c update Python versions 3 weeks ago
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README.rst

===========
Local CNAME
===========

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:alt: Latest Version

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:alt: Python Versions

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:target: https://github.com/hjacobs/local-cname/blob/master/LICENSE
:alt: License

This is a little helper script to emulate a local CNAME DNS by writing to ``/etc/hosts``.
DNS changes (e.g. to rollout new services) can be tested by overwriting DNS names in the local ``/etc/hosts`` file.
The hosts file only supports IP addresses thus making it cumbersome to emulate a DNS ``CNAME`` without a local DNS server/proxy.
The ``local-cname`` is a very small script to automatically lookup DNS names and write IP addresses to the hosts file.
It is self-contained and restores your local ``/etc/hosts`` file on exit (press CTRL+C).

Installation:

.. code-block:: bash

$ pip install -U local-cname # might need "sudo" or use "--user"

Usage:

.. code-block:: bash

$ sudo local-cname FROM_DNS_NAME TO_DNS_NAME
# press CTRL+C to cancel and restore your old /etc/hosts

Example:

.. code-block:: bash

$ sudo local-cname google.com duckduckgo.com
$ ping google.com