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      <h1>Configuration Management</h1>
<p>Configuration management involves modifying servers from an existing state to
a desired state. Numerous tools exist to modify the state in a controlled
way, including <a href="http://puppetlabs.com/puppet/what-is-puppet">Puppet</a>,
<a href="http://www.getchef.com/chef/">Chef</a>,
<a href="http://www.saltstack.com/">SaltStack</a>, and Ansible. Puppet and Chef are
written in Ruby, while SaltStack and Ansible are written in Python.</p>
<h1>Ad hoc tasks</h1>
<p>Configuration management tools such as Chef, Puppet, Ansible, and SaltStack
are not useful for performing ad hoc tasks that require interactive responses.
<a href="http://docs.fabfile.org/en/1.8/">Fabric</a> and
<a href="http://docs.pyinvoke.org/en/latest/">Invoke</a> are used for interactive
operations, such as querying the database from the Django manage.py shell.</p>
<h2>Ansible</h2>
<p><a href="http://www.ansibleworks.com/">Ansible</a> is an open source configuration
management and application deployment tool built in Python.</p>
<h3>Ansible Resources</h3>
<ul>
<li>
<p><a href="http://docs.ansible.com/index.html">Official Ansible documentation</a></p>
</li>
<li>
<p><a href="http://www.insom.me.uk/post/pycon-talk.html">Python for Configuration Management with Ansible slides</a>
from PyCon UK 2013</p>
</li>
<li>
<p><a href="http://devopsu.com/newsletters/ansible-weekly-newsletter.html">Ansible Weekly Newsletter</a></p>
</li>
<li>
<p><a href="http://labs.qandidate.com/blog/2013/11/15/first-steps-with-ansible/">First Steps with Ansible</a></p>
</li>
<li>
<p><a href="http://red-badger.com/blog/2013/06/29/ansible/">Red Badger on Ansible</a></p>
</li>
<li>
<p><a href="http://lowendbox.com/blog/getting-started-with-ansible/">Getting Started with Ansible</a></p>
</li>
<li>
<p><a href="http://softwareas.com/ansible-and-linode-what-i-learned-about-controlling-linodes-from-ansible">Ansible and Linode</a></p>
</li>
<li>
<p><a href="http://jlafon.io/ansible-duo-security.html">Multi-factor SSH authentication with Ansible and Duo Security</a></p>
</li>
<li>
<p><a href="http://devopsu.com/blog/ansible-vs-shell-scripts/">Ansible vs. Shell Scripts</a></p>
</li>
<li>
<p><a href="http://missingm.co/2013/06/ansible-and-salt-a-detailed-comparison/">Ansible and Salt: A Detailed Comparison</a></p>
</li>
<li>
<p><a href="http://www.nickhammond.com/automating-development-environment-ansible/">Automating your development environment with Ansible</a></p>
</li>
<li>
<p><a href="http://devopsu.com/guides/ansible-post-install.html">Post-install steps with Ansible</a> </p>
</li>
<li>
<p><a href="http://lattejed.com/first-five-and-a-half-minutes-on-a-server-with-ansible">First Five (and a half) Minutes on a Server with Ansible</a> </p>
</li>
<li>
<p><a href="http://davidwinter.me/articles/2013/11/23/introduction-to-ansible/">(Detailed) Introduction to Ansible</a></p>
</li>
<li>
<p><a href="http://blog.couchbase.com/create-couchbase-cluster-with-ansible">Create a Couchbase Cluster with Ansible</a></p>
</li>
<li>
<p><a href="https://groups.google.com/forum/#!msg/Ansible-project/WpRblldA2PQ/lYDpFjBXDlsJ">Idempotence, convergence, and other silly fancy words we often use</a></p>
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