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114 lines
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114 lines
4.1 KiB
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.. image:: http://ansible.github.com/mpd_rings.jpg
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:height: 225
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:width: 300
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:alt: ""
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:target: http://photos.michaeldehaan.net/infrared/h3d850bdf#h3d850bdf
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.. image:: http://ansible.github.com/mpd_tunnel.jpg
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:height: 225
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:width: 337
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:alt: ""
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:target: http://photos.michaeldehaan.net/favorites/h2428aca7#h2428aca7
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.. image:: http://ansible.github.com/mpd_tubes.jpg
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:height: 225
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:alt: ""
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:target: http://photos.michaeldehaan.net/ncsu/h3b63b68e#h3b63b68e
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Introducing Ansible
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===================
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Ansible is a radically simple deployment, model-driven configuration management,
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and command execution framework. Other tools in this space have been too
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complicated for too long, require too much bootstrapping, and have too
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much learning curve. Ansible is dead simple and painless to extend.
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For comparison, Puppet and Chef have about 60k lines of code.
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Ansible's core is a little over 1000 lines.
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Ansible isn't just for idempotent configuration -- it's also great for ad-hoc
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tasks, quickly firing off commands against nodes. See :doc:`examples`.
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Where Ansible excels though, is expressing complex multi-node
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deployment processes, executing ordered sequences on
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different sets of nodes through :doc:`playbooks`.
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Extending ansible does not require programming in any particular
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language -- you can write :doc:`modules` as scripts or programs that return
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simple JSON. It's also trivially easy to just execute useful shell
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commands.
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Why use Ansible versus something else? (Puppet, Chef, Capistrano, etc?) Ansible will have far
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less code, it will be (by extension) more correct, and it will be the
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easiest thing to hack on and use you'll ever see -- regardless of your
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favorite language of choice.
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Systems management doesn't have to be complicated. Ansible's docs
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will remain short & simple, and the source will be blindingly obvious.
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Architecture
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````````````
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.. image:: http://ansible.github.com/ansible_arch.jpg
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:alt: "Architecture Diagram"
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:width: 648
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:height: 464
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Features
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````````
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* Dead simple setup
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* Super fast & parallel by default
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* No server or client daemons; use existing SSHd out of the box
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* No additional software required on client boxes
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* Can be easily run from a checkout, no installation required
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* Modules are idempotent, but you can also easily use shell commands
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* Modules can be written in ANY language
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* Awesome API for creating very powerful distributed scripts
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* Does not have to run remote steps as root
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* Pluggable transports (SSH is just the default)
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* Source host info & variables from files or external software
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* The easiest config management system to use, ever.
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Resources
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`````````
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Your ideas and contributions are welcome. We're also happy to help
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you with questions about Ansible.
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* Join the `ansible-project mailing list <http://groups.google.com/group/ansible-project>`_ on Google Groups
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* Join `#ansible <irc://irc.freenode.net/#ansible>`_ on the `freenode IRC network <http://freenode.net/>`_
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* Visit the `project page <https://github.com/ansible/ansible>`_ on Github
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- View the `issue tracker <https://github.com/ansible/ansible/issues>`_
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Contents
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========
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.. toctree::
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:maxdepth: 3
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gettingstarted
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patterns
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examples
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modules
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YAMLSyntax
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playbooks
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api
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moduledev
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faq
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man
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About the Author
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````````````````
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Ansible was originally developed by `Michael DeHaan <http://michaeldehaan.net>`_ (`@laserllama <http://twitter.com/#!/laserllama>`_), a Raleigh, NC
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based software developer and architect. He created other popular
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DevOps programs such as `Cobbler <http://cobbler.github.com/>`_, the popular Linux install server.
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Cobbler is used to deploy mission critical systems all over the
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planet, in industries ranging from massively multiplayer gaming, core
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internet infrastructure, finance, chip design, and more. Michael also
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helped co-author of `Func <http://fedorahosted.org/func/>`_, a precursor to Ansible, which is used to
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orchestrate systems in lots of diverse places. He's worked on systems
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software for IBM, Motorola, Red Hat's Emerging Technologies Group,
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Puppet Labs, and rPath. Reach Michael by email `here <mailto:michael.dehaan@gmail.com>`_.
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