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<li><a class="reference internal" href="#python-2-6-epel-instructions-for-rhel-and-centos-5">Python 2.6 EPEL instructions for RHEL and CentOS 5</a></li>
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<li><a class="reference internal" href="#getting-ansible">Getting Ansible</a><ul>
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<li><a class="reference internal" href="#choosing-between-paramiko-and-native-ssh">Choosing Between Paramiko and Native SSH</a></li>
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<br/>
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<div class="section" id="getting-started">
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<h1>Getting Started<a class="headerlink" href="#getting-started" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="requirements">
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<h2>Requirements<a class="headerlink" href="#requirements" title="Permalink to this headline">¶</a></h2>
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<p>Requirements for Ansible are extremely minimal.</p>
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<p>Ansible is written for Python 2.6. If you are running Python 2.5 on an “Enterprise Linux” variant,
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your distribution can easily install 2.6 (see instructions in the next section). Newer versions
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of Linux and OS X should already have 2.6.</p>
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<p>In additon to Python 2.6, you will want the following packages:</p>
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<ul class="simple">
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<li><tt class="docutils literal"><span class="pre">paramiko</span></tt></li>
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<li><tt class="docutils literal"><span class="pre">PyYAML</span></tt></li>
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<li><tt class="docutils literal"><span class="pre">python-jinja2</span></tt></li>
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</ul>
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<p>On the managed nodes, you only need Python 2.4 or later, but if you are are running less than Python 2.6 on them, you will
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also need:</p>
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<ul class="simple">
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<li><tt class="docutils literal"><span class="pre">python-simplejson</span></tt></li>
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</ul>
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<p>(Note that even that’s not quite true. Ansible’s “raw” module (for executing commands in a quick and dirty way) and the copy module – some of the most basic features in ansible don’t even need that. So technically, you can use Ansible to install python-simplejson using the raw module, which then allows you to use everything else. That’s jumping ahead though.)</p>
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</div>
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<div class="section" id="python-2-6-epel-instructions-for-rhel-and-centos-5">
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<h2>Python 2.6 EPEL instructions for RHEL and CentOS 5<a class="headerlink" href="#python-2-6-epel-instructions-for-rhel-and-centos-5" title="Permalink to this headline">¶</a></h2>
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<p>These distributions don’t have Python 2.6 by default, but it is easily installable.</p>
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<ul class="simple">
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<li>If you have not already done so, <a class="reference external" href="http://fedoraproject.org/wiki/EPEL">configure EPEL</a></li>
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<li>yum install python26 python26-PyYAML python26-paramiko python26-jinja2</li>
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</ul>
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</div>
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<div class="section" id="getting-ansible">
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<h2>Getting Ansible<a class="headerlink" href="#getting-ansible" title="Permalink to this headline">¶</a></h2>
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<p>If you are interested in using all the latest features, you may wish to keep up to date
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with the development branch of the git checkout. This also makes it easiest to contribute
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back to the project.</p>
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<p>Instructions for installing from source are below.</p>
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<p>Ansible’s release cycles are about one month long. Due to this
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short release cycle, any bugs will generally be fixed in the next release versus maintaining
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backports on the stable branch.</p>
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<p>You may also wish to follow the <a class="reference external" href="https://github.com/ansible/ansible">Github project</a> if
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you have a github account. This is also where we keep the issue tracker for sharing
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bugs and feature ideas.</p>
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<div class="section" id="running-from-checkout">
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<h3>Running From Checkout<a class="headerlink" href="#running-from-checkout" title="Permalink to this headline">¶</a></h3>
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<p>Ansible is trivially easy to run from a checkout, root permissions are not required
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to use it:</p>
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<div class="highlight-python"><pre>$ git clone git://github.com/ansible/ansible.git
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$ cd ./ansible
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$ source ./hacking/env-setup</pre>
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</div>
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<p>You can optionally specify an inventory file (see <a class="reference internal" href="patterns.html"><em>Inventory & Patterns</em></a>) other than /etc/ansible/hosts:</p>
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<div class="highlight-python"><pre>$ echo "127.0.0.1" > ~/ansible_hosts
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$ export ANSIBLE_HOSTS=~/ansible_hosts</pre>
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</div>
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<p>Now let’s test things:</p>
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<div class="highlight-python"><pre>$ ansible all -m ping --ask-pass</pre>
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</div>
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</div>
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<div class="section" id="make-install">
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<h3>Make Install<a class="headerlink" href="#make-install" title="Permalink to this headline">¶</a></h3>
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<p>If you are not working from a distribution where Ansible is packaged yet, you can install Ansible
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using “make install”. This is done through <cite>python-distutils</cite>:</p>
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<div class="highlight-python"><pre>$ git clone git://github.com/ansible/ansible.git
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$ cd ./ansible
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$ sudo make install</pre>
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</div>
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</div>
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<div class="section" id="via-rpm">
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<h3>Via RPM<a class="headerlink" href="#via-rpm" title="Permalink to this headline">¶</a></h3>
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<p>RPMs for the last Ansible release are available for <a class="reference external" href="http://fedoraproject.org/wiki/EPEL">EPEL</a> 6 and currently supported
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Fedora distributions.</p>
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<blockquote>
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<div># install the epel-release RPM if needed on CentOS, RHEL, or Scientific Linux
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$ sudo yum install ansible</div></blockquote>
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<p>You can also use the <tt class="docutils literal"><span class="pre">make</span> <span class="pre">rpm</span></tt> command to
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build an RPM you can distribute and install:</p>
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<div class="highlight-python"><pre>$ git clone git://github.com/ansible/ansible.git
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$ cd ./ansible
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$ make rpm
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$ sudo rpm -Uvh ~/rpmbuild/RPMS/noarch/ansible-*.noarch.rpm</pre>
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</div>
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<p>Note that if you are tracking the upstream source (i.e. git), the RPM revision will not be
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bumped with every source code change. To get around this, you can use
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<tt class="docutils literal"><span class="pre">rpm</span> <span class="pre">-Uvh</span></tt> with <tt class="docutils literal"><span class="pre">--force</span></tt> when RPM tells you the package is still at the
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same version. This is perfectly safe to do.</p>
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</div>
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<div class="section" id="debian-gentoo-arch-others">
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<h3>Debian, Gentoo, Arch, Others<a class="headerlink" href="#debian-gentoo-arch-others" title="Permalink to this headline">¶</a></h3>
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<p>Gentoo eBuilds are available <a class="reference external" href="https://github.com/uu/ubuilds">here</a></p>
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<p>Debian package recipes can be built from the source checkout, run:</p>
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<div class="highlight-python"><pre>make debian</pre>
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</div>
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<p>An Arch PKGBUILD is available on <a class="reference external" href="https://aur.archlinux.org/packages.php?ID=58621">AUR</a>
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If you have python3 installed on Arch, you probably want to symlink python to python2:</p>
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<div class="highlight-python"><pre>sudo ln -sf /usr/bin/python2 /usr/bin/python</pre>
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</div>
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<p>If you would like to package Ansible for Homebrew, BSD, or others,
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please stop by the mailing list and say hi!</p>
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</div>
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<div class="section" id="tagged-releases">
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<h3>Tagged Releases<a class="headerlink" href="#tagged-releases" title="Permalink to this headline">¶</a></h3>
|
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<p>Tagged releases are available as tar.gz files from the Ansible github
|
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project page:</p>
|
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<ul class="simple">
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<li><a class="reference external" href="https://github.com/ansible/ansible/downloads">Ansible/downloads</a></li>
|
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</ul>
|
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</div>
|
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</div>
|
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<div class="section" id="choosing-between-paramiko-and-native-ssh">
|
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<h2>Choosing Between Paramiko and Native SSH<a class="headerlink" href="#choosing-between-paramiko-and-native-ssh" title="Permalink to this headline">¶</a></h2>
|
|
<p>By default, ansible uses paramiko to talk to managed nodes over SSH. Paramiko is fast, works
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very transparently, requires no configuration, and is a good choice for most users.
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However, it does not support some advanced SSH features that folks will want to use.</p>
|
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<p>Starting in version 0.5, if you want to leverage more advanced SSH features (such as Kerberized SSH or jump hosts),
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pass the flag “–connection=ssh” to any ansible command, or set the
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ANSIBLE_TRANSPORT environment variable to ‘ssh’. This will cause Ansible to use openssh
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tools instead.</p>
|
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<p>If ANSIBLE_SSH_ARGS are not set, ansible will try to use some sensible ControlMaster options
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by default. You are free to override this environment variable, but should still pass ControlMaster
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options to ensure performance of this transport. With ControlMaster in use, both transports
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are roughly the same speed. Without CM, the binary ssh transport is signficantly slower.</p>
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<p>If none of this makes sense to you, the default paramiko option is probably fine.</p>
|
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</div>
|
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<div class="section" id="your-first-commands">
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<h2>Your first commands<a class="headerlink" href="#your-first-commands" title="Permalink to this headline">¶</a></h2>
|
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<p>Now that you’ve installed Ansible, it’s time to test it.</p>
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<p>Edit (or create) /etc/ansible/hosts and put one or more remote systems in it, for
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which you have your SSH key in <tt class="docutils literal"><span class="pre">authorized_keys</span></tt>:</p>
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<div class="highlight-python"><pre>192.168.1.50
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aserver.example.org
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bserver.example.org</pre>
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</div>
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<p>Set up SSH agent to avoid retyping passwords:</p>
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<div class="highlight-python"><pre>ssh-agent bash
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ssh-add ~/.ssh/id_rsa</pre>
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</div>
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<p>(Depending on your setup, you may wish to ansible’s –private-key-file option to specify a pem file instead)</p>
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<p>Now ping all your nodes:</p>
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<div class="highlight-python"><pre>ansible all -m ping</pre>
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</div>
|
|
<p>If you want to access machines remotely as a different user than root, you will want to
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specify the ‘-u’ option to ansible. If you would like to access sudo mode, there are also flags to do that:</p>
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<div class="highlight-python"><pre># as bruce
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ansible all -m ping -u bruce
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|
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# as bruce, sudoing to root
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ansible all -m ping -u bruce --sudo
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|
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# as bruce, sudoing to batman
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ansible all -m ping -u bruce --sudo --sudo-user batman</pre>
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</div>
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<p>Now run a live command on all of your nodes:</p>
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<div class="highlight-python"><pre>ansible all -a "/bin/echo hello"</pre>
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</div>
|
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<p>Congratulations. You’ve just contacted your nodes with Ansible. It’s
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now time to read some of the more real-world <a class="reference internal" href="examples.html"><em>Command Line</em></a>, and explore
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what you can do with different modules, as well as the Ansible
|
|
<a class="reference internal" href="playbooks.html"><em>Playbooks</em></a> language. Ansible is not just about running commands, it
|
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also has powerful configuration management and deployment features. There’s more to
|
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explore, but you already have a fully working infrastructure!</p>
|
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<div class="admonition-see-also admonition seealso">
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<p class="first admonition-title">See also</p>
|
|
<dl class="last docutils">
|
|
<dt><a class="reference internal" href="examples.html"><em>Command Line</em></a></dt>
|
|
<dd>Examples of basic commands</dd>
|
|
<dt><a class="reference internal" href="playbooks.html"><em>Playbooks</em></a></dt>
|
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<dd>Learning ansible’s configuration management language</dd>
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<dt><a class="reference external" href="http://groups.google.com/group/ansible-project">Mailing List</a></dt>
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<dd>Questions? Help? Ideas? Stop by the list on Google Groups</dd>
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<dt><a class="reference external" href="http://irc.freenode.net">irc.freenode.net</a></dt>
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<dd>#ansible IRC chat channel</dd>
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