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<p class="caption"><span class="caption-text">Content</span></p>
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="index.html">Home</a></li>
<li class="toctree-l1"><a class="reference internal" href="project.html">Project</a></li>
<li class="toctree-l1"><a class="reference internal" href="license.html">License</a></li>
<li class="toctree-l1"><a class="reference internal" href="start/index.html">Quick start</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="#">Installation</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#prerequisites">Prerequisites</a></li>
<li class="toctree-l2"><a class="reference internal" href="#installation-tools">Installation tools</a></li>
<li class="toctree-l2"><a class="reference internal" href="#airflow-extra-dependencies">Airflow extra dependencies</a></li>
<li class="toctree-l2"><a class="reference internal" href="#provider-packages">Provider packages</a></li>
<li class="toctree-l2"><a class="reference internal" href="#differences-between-extras-and-providers">Differences between extras and providers</a></li>
<li class="toctree-l2"><a class="reference internal" href="#system-dependencies">System dependencies</a></li>
<li class="toctree-l2"><a class="reference internal" href="#constraints-files">Constraints files</a></li>
<li class="toctree-l2"><a class="reference internal" href="#installation-script">Installation script</a></li>
<li class="toctree-l2"><a class="reference internal" href="#support-for-python-and-kubernetes-versions">Support for Python and Kubernetes versions</a></li>
<li class="toctree-l2"><a class="reference internal" href="#installing-airflow-from-released-sources-and-packages">Installing Airflow From Released Sources and packages</a></li>
<li class="toctree-l2"><a class="reference internal" href="#set-up-a-database">Set up a database</a></li>
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<blockquote>
<div></div></blockquote>
<div class="section" id="installation">
<h1>Installation<a class="headerlink" href="#installation" title="Permalink to this headline"></a></h1>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><p><a class="reference internal" href="#prerequisites" id="id1">Prerequisites</a></p></li>
<li><p><a class="reference internal" href="#installation-tools" id="id2">Installation tools</a></p></li>
<li><p><a class="reference internal" href="#airflow-extra-dependencies" id="id3">Airflow extra dependencies</a></p></li>
<li><p><a class="reference internal" href="#provider-packages" id="id4">Provider packages</a></p></li>
<li><p><a class="reference internal" href="#differences-between-extras-and-providers" id="id5">Differences between extras and providers</a></p></li>
<li><p><a class="reference internal" href="#system-dependencies" id="id6">System dependencies</a></p></li>
<li><p><a class="reference internal" href="#constraints-files" id="id7">Constraints files</a></p></li>
<li><p><a class="reference internal" href="#installation-script" id="id8">Installation script</a></p></li>
<li><p><a class="reference internal" href="#support-for-python-and-kubernetes-versions" id="id9">Support for Python and Kubernetes versions</a></p></li>
<li><p><a class="reference internal" href="#installing-airflow-from-released-sources-and-packages" id="id10">Installing Airflow From Released Sources and packages</a></p></li>
<li><p><a class="reference internal" href="#set-up-a-database" id="id11">Set up a database</a></p></li>
<li><p><a class="reference internal" href="#troubleshooting" id="id12">Troubleshooting</a></p>
<ul>
<li><p><a class="reference internal" href="#airflow-command-is-not-recognized" id="id13">Airflow command is not recognized</a></p></li>
<li><p><a class="reference internal" href="#symbol-not-found-py-getargcargv" id="id14"><code class="docutils literal notranslate"><span class="pre">Symbol</span> <span class="pre">not</span> <span class="pre">found:</span> <span class="pre">_Py_GetArgcArgv</span></code></a></p></li>
</ul>
</li>
</ul>
</div>
<p>This page describes installations using the <code class="docutils literal notranslate"><span class="pre">apache-airflow</span></code> package <a class="reference external" href="https://pypi.org/project/apache-airflow/">published in
PyPI</a>, but some information may be useful during
installation with other tools as well.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Airflow is also distributed as a Docker image (OCI Image). Consider using it to guarantee that software will always run the same no matter where it is deployed. For more information, see: <a class="reference external" href="/docs/docker-stack/index.html" title="(in docker-stack vdevel)"><span>Docker Image for Apache Airflow</span></a>.</p>
</div>
<div class="section" id="prerequisites">
<h2><a class="toc-backref" href="#id1">Prerequisites</a><a class="headerlink" href="#prerequisites" title="Permalink to this headline"></a></h2>
<p>Airflow is tested with:</p>
<ul class="simple">
<li><p>Python: 3.6, 3.7, 3.8</p></li>
<li><p>Databases:</p>
<ul>
<li><p>PostgreSQL: 9.6, 10, 11, 12, 13</p></li>
<li><p>MySQL: 5.7, 8</p></li>
<li><p>SQLite: 3.15.0+</p></li>
</ul>
</li>
<li><p>Kubernetes: 1.18.15 1.19.7 1.20.2</p></li>
</ul>
<p><strong>Note:</strong> MySQL 5.x versions are unable to or have limitations with
running multiple schedulers -- please see: <a class="reference internal" href="concepts/scheduler.html"><span class="doc">Scheduler</span></a>. MariaDB is not tested/recommended.</p>
<p><strong>Note:</strong> SQLite is used in Airflow tests. Do not use it in production. We recommend
using the latest stable version of SQLite for local development.</p>
<p>Please note that with respect to Python 3 support, Airflow 2.0.0 has been
tested with Python 3.6, 3.7, and 3.8, but does not yet support Python 3.9.</p>
</div>
<div class="section" id="installation-tools">
<h2><a class="toc-backref" href="#id2">Installation tools</a><a class="headerlink" href="#installation-tools" title="Permalink to this headline"></a></h2>
<p>Only <code class="docutils literal notranslate"><span class="pre">pip</span></code> installation is currently officially supported.</p>
<p>While there are some successes with using other tools like <a class="reference external" href="https://python-poetry.org/">poetry</a> or
<a class="reference external" href="https://pypi.org/project/pip-tools/">pip-tools</a>, they do not share the same workflow as
<code class="docutils literal notranslate"><span class="pre">pip</span></code> - especially when it comes to constraint vs. requirements management.
Installing via <code class="docutils literal notranslate"><span class="pre">Poetry</span></code> or <code class="docutils literal notranslate"><span class="pre">pip-tools</span></code> is not currently supported. If you wish to install airflow
using those tools you should use the <a class="reference internal" href="#installation-constraints"><span class="std std-ref">constraint files</span></a> and convert them to appropriate
format and workflow that your tool requires.</p>
</div>
<div class="section" id="airflow-extra-dependencies">
<span id="installation-airflow-extra-dependencies"></span><h2><a class="toc-backref" href="#id3">Airflow extra dependencies</a><a class="headerlink" href="#airflow-extra-dependencies" title="Permalink to this headline"></a></h2>
<p>The <code class="docutils literal notranslate"><span class="pre">apache-airflow</span></code> PyPI basic package only installs what's needed to get started.
Additional packages can be installed depending on what will be useful in your
environment. For instance, if you don't need connectivity with Postgres,
you won't have to go through the trouble of installing the <code class="docutils literal notranslate"><span class="pre">postgres-devel</span></code>
yum package, or whatever equivalent applies on the distribution you are using.</p>
<p>Most of the extra dependencies are linked to a corresponding provider package. For example &quot;amazon&quot; extra
has a corresponding <code class="docutils literal notranslate"><span class="pre">apache-airflow-providers-amazon</span></code> provider package to be installed. When you install
Airflow with such extras, the necessary provider packages are installed automatically (latest versions from
PyPI for those packages). However you can freely upgrade and install provider packages independently from
the main Airflow installation.</p>
<p>For the list of the extras and what they enable, see: <a class="reference internal" href="extra-packages-ref.html"><span class="doc">Reference for package extras</span></a>.</p>
</div>
<div class="section" id="provider-packages">
<span id="installation-provider-packages"></span><h2><a class="toc-backref" href="#id4">Provider packages</a><a class="headerlink" href="#provider-packages" title="Permalink to this headline"></a></h2>
<p>Unlike Apache Airflow 1.10, the Airflow 2.0 is delivered in multiple, separate, but connected packages.
The core of Airflow scheduling system is delivered as <code class="docutils literal notranslate"><span class="pre">apache-airflow</span></code> package and there are around
60 provider packages which can be installed separately as so called <code class="docutils literal notranslate"><span class="pre">Airflow</span> <span class="pre">Provider</span> <span class="pre">packages</span></code>.
The default Airflow installation doesn't have many integrations and you have to install them yourself.</p>
<p>You can even develop and install your own providers for Airflow. For more information,
see: <a class="reference external" href="/docs/apache-airflow-providers/index.html" title="(in apache-airflow-providers vdevel)"><span>Provider packages</span></a></p>
<p>For the list of the provider packages and what they enable, see: <a class="reference external" href="/docs/apache-airflow-providers/packages-ref.html" title="(in apache-airflow-providers vdevel)"><span>Providers packages reference</span></a>.</p>
</div>
<div class="section" id="differences-between-extras-and-providers">
<h2><a class="toc-backref" href="#id5">Differences between extras and providers</a><a class="headerlink" href="#differences-between-extras-and-providers" title="Permalink to this headline"></a></h2>
<p>Just to prevent confusion of extras versus provider packages: Extras and providers are different things,
though many extras are leading to installing providers.</p>
<p>Extras are standard Python setuptools feature that allows to add additional set of dependencies as
optional features to &quot;core&quot; Apache Airflow. One of the type of such optional features are providers
packages, but not all optional features of Apache Airflow have corresponding providers.</p>
<p>We are using the <code class="docutils literal notranslate"><span class="pre">extras</span></code> setuptools features to also install provider packages.
Most of the extras are also linked (same name) with provider packages - for example adding <code class="docutils literal notranslate"><span class="pre">[google]</span></code>
extra also adds <code class="docutils literal notranslate"><span class="pre">apache-airflow-providers-google</span></code> as dependency. However there are some extras that do
not install providers (examples <code class="docutils literal notranslate"><span class="pre">github_enterprise</span></code>, <code class="docutils literal notranslate"><span class="pre">kerberos</span></code>, <code class="docutils literal notranslate"><span class="pre">async</span></code> - they add some extra
dependencies which are needed for those <code class="docutils literal notranslate"><span class="pre">extra</span></code> features of Airflow mentioned. The three examples
above add respectively github enterprise oauth authentication, kerberos integration or
asynchronous workers for gunicorn. None of those have providers, they are just extending Apache Airflow
&quot;core&quot; package with new functionalities.</p>
</div>
<div class="section" id="system-dependencies">
<h2><a class="toc-backref" href="#id6">System dependencies</a><a class="headerlink" href="#system-dependencies" title="Permalink to this headline"></a></h2>
<p>You need certain system level requirements in order to install Airflow. Those are requirements that are known
to be needed for Linux system (Tested on Ubuntu Buster LTS) :</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo apt-get install -y --no-install-recommends <span class="se">\</span>
freetds-bin <span class="se">\</span>
krb5-user <span class="se">\</span>
ldap-utils <span class="se">\</span>
libffi6 <span class="se">\</span>
libsasl2-2 <span class="se">\</span>
libsasl2-modules <span class="se">\</span>
libssl1.1 <span class="se">\</span>
locales <span class="se">\</span>
lsb-release <span class="se">\</span>
sasl2-bin <span class="se">\</span>
sqlite3 <span class="se">\</span>
unixodbc
</pre></div>
</div>
<p>You also need database client packages (Postgres or MySQL) if you want to use those databases.</p>
</div>
<div class="section" id="constraints-files">
<span id="installation-constraints"></span><h2><a class="toc-backref" href="#id7">Constraints files</a><a class="headerlink" href="#constraints-files" title="Permalink to this headline"></a></h2>
<p>Airflow installation might be sometimes tricky because Airflow is a bit of both a library and application.
Libraries usually keep their dependencies open and applications usually pin them, but we should do neither
and both at the same time. We decided to keep our dependencies as open as possible
(in <code class="docutils literal notranslate"><span class="pre">setup.cfg</span></code> and <code class="docutils literal notranslate"><span class="pre">setup.py</span></code>) so users can install different
version of libraries if needed. This means that from time to time plain <code class="docutils literal notranslate"><span class="pre">pip</span> <span class="pre">install</span> <span class="pre">apache-airflow</span></code> will
not work or will produce unusable Airflow installation.</p>
<p>In order to have repeatable installation, starting from <strong>Airflow 1.10.10</strong> and updated in
<strong>Airflow 1.10.13</strong> we also keep a set of &quot;known-to-be-working&quot; constraint files in the
<code class="docutils literal notranslate"><span class="pre">constraints-master</span></code>, <code class="docutils literal notranslate"><span class="pre">constraints-2-0</span></code> orphan branches and then we create tag
for each released version e.g. <code class="code docutils literal notranslate"><span class="pre">constraints-2.1.0</span></code>. This way, when we keep a tested and working set of dependencies.</p>
<p>Those &quot;known-to-be-working&quot; constraints are per major/minor Python version. You can use them as constraint
files when installing Airflow from PyPI. Note that you have to specify correct Airflow version
and Python versions in the URL.</p>
<p>You can create the URL to the file substituting the variables in the template below.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>https://raw.githubusercontent.com/apache/airflow/constraints-${AIRFLOW_VERSION}/constraints-${PYTHON_VERSION}.txt
</pre></div>
</div>
<p>where:</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW_VERSION</span></code> - Airflow version (e.g. <code class="code docutils literal notranslate"><span class="pre">2.1.0</span></code>) or <code class="docutils literal notranslate"><span class="pre">master</span></code>, <code class="docutils literal notranslate"><span class="pre">2-0</span></code>, for latest development version</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">PYTHON_VERSION</span></code> Python version e.g. <code class="docutils literal notranslate"><span class="pre">3.8</span></code>, <code class="docutils literal notranslate"><span class="pre">3.7</span></code></p></li>
</ul>
<p>There is also a no-providers constraint file, which contains just constraints required to install Airflow core. This allows
to install and upgrade airflow separately and independently from providers.</p>
<p>You can create the URL to the file substituting the variables in the template below.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>https://raw.githubusercontent.com/apache/airflow/constraints-${AIRFLOW_VERSION}/constraints-no-providers-${PYTHON_VERSION}.txt
</pre></div>
</div>
</div>
<div class="section" id="installation-script">
<h2><a class="toc-backref" href="#id8">Installation script</a><a class="headerlink" href="#installation-script" title="Permalink to this headline"></a></h2>
<p>In order to simplify the installation, we have prepared examples that will select
<a class="reference external" href="installation:constraints">the constraints file</a> compatible with your Python version.</p>
<p><strong>Installing Airflow with extras and providers</strong></p>
<p>If you need to install <a class="reference internal" href="#installation-airflow-extra-dependencies"><span class="std std-ref">extra dependencies of airflow</span></a>,
you can use the script below to make an installation a one-liner (the example below installs
postgres and google provider, as well as <code class="docutils literal notranslate"><span class="pre">async</span></code> extra.</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">AIRFLOW_VERSION</span><span class="o">=</span><span class="m">2</span>.1.0
<span class="nv">PYTHON_VERSION</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>python --version <span class="p">|</span> cut -d <span class="s2">&quot; &quot;</span> -f <span class="m">2</span> <span class="p">|</span> cut -d <span class="s2">&quot;.&quot;</span> -f <span class="m">1</span>-2<span class="k">)</span><span class="s2">&quot;</span>
<span class="nv">CONSTRAINT_URL</span><span class="o">=</span><span class="s2">&quot;https://raw.githubusercontent.com/apache/airflow/constraints-</span><span class="si">${</span><span class="nv">AIRFLOW_VERSION</span><span class="si">}</span><span class="s2">/constraints-</span><span class="si">${</span><span class="nv">PYTHON_VERSION</span><span class="si">}</span><span class="s2">.txt&quot;</span>
pip install <span class="s2">&quot;apache-airflow[async,postgres,google]==</span><span class="si">${</span><span class="nv">AIRFLOW_VERSION</span><span class="si">}</span><span class="s2">&quot;</span> --constraint <span class="s2">&quot;</span><span class="si">${</span><span class="nv">CONSTRAINT_URL</span><span class="si">}</span><span class="s2">&quot;</span>
</pre></div>
</div>
<p>Note, that it will install the versions of providers that were available at the moment this version of Airflow
has been prepared. You need to follow next steps if you want to upgrade provider packages in case they were
released afterwards.</p>
<p><strong>Upgrading Airflow with providers</strong></p>
<p>You can also upgrade airflow together with extras (providers available at the time of the release of Airflow
being installed.</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">AIRFLOW_VERSION</span><span class="o">=</span><span class="m">2</span>.1.0
<span class="nv">PYTHON_VERSION</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>python --version <span class="p">|</span> cut -d <span class="s2">&quot; &quot;</span> -f <span class="m">2</span> <span class="p">|</span> cut -d <span class="s2">&quot;.&quot;</span> -f <span class="m">1</span>-2<span class="k">)</span><span class="s2">&quot;</span>
<span class="nv">CONSTRAINT_URL</span><span class="o">=</span><span class="s2">&quot;https://raw.githubusercontent.com/apache/airflow/constraints-</span><span class="si">${</span><span class="nv">AIRFLOW_VERSION</span><span class="si">}</span><span class="s2">/constraints-</span><span class="si">${</span><span class="nv">PYTHON_VERSION</span><span class="si">}</span><span class="s2">.txt&quot;</span>
pip install --upgrade <span class="s2">&quot;apache-airflow[postgres,google]==</span><span class="si">${</span><span class="nv">AIRFLOW_VERSION</span><span class="si">}</span><span class="s2">&quot;</span> --constraint <span class="s2">&quot;</span><span class="si">${</span><span class="nv">CONSTRAINT_URL</span><span class="si">}</span><span class="s2">&quot;</span>
</pre></div>
</div>
<p><strong>Installation and upgrading of Airflow providers separately</strong></p>
<p>You can manually install all the providers you need. You can continue using the &quot;providers&quot; constraint files
but the 'versioned' airflow constraints installs only the versions of providers that were available in PyPI at
the time of preparing of the airflow version. However, usually you can use &quot;master&quot; version of the providers
to install latest version of providers. Usually the providers work with most versions of Airflow, if there
will be any incompatibilities, it will be captured as package dependencies.</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">PYTHON_VERSION</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>python --version <span class="p">|</span> cut -d <span class="s2">&quot; &quot;</span> -f <span class="m">2</span> <span class="p">|</span> cut -d <span class="s2">&quot;.&quot;</span> -f <span class="m">1</span>-2<span class="k">)</span><span class="s2">&quot;</span>
<span class="c1"># For example: 3.6</span>
<span class="nv">CONSTRAINT_URL</span><span class="o">=</span><span class="s2">&quot;https://raw.githubusercontent.com/apache/airflow/constraints-master/constraints-</span><span class="si">${</span><span class="nv">PYTHON_VERSION</span><span class="si">}</span><span class="s2">.txt&quot;</span>
pip install <span class="s2">&quot;apache-airflow-providers-google&quot;</span> --constraint <span class="s2">&quot;</span><span class="si">${</span><span class="nv">CONSTRAINT_URL</span><span class="si">}</span><span class="s2">&quot;</span>
</pre></div>
</div>
<p>You can also upgrade the providers to latest versions (you need to use master version of constraints for that):</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">PYTHON_VERSION</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>python --version <span class="p">|</span> cut -d <span class="s2">&quot; &quot;</span> -f <span class="m">2</span> <span class="p">|</span> cut -d <span class="s2">&quot;.&quot;</span> -f <span class="m">1</span>-2<span class="k">)</span><span class="s2">&quot;</span>
<span class="c1"># For example: 3.6</span>
<span class="nv">CONSTRAINT_URL</span><span class="o">=</span><span class="s2">&quot;https://raw.githubusercontent.com/apache/airflow/constraints-master/constraints-</span><span class="si">${</span><span class="nv">PYTHON_VERSION</span><span class="si">}</span><span class="s2">.txt&quot;</span>
pip install <span class="s2">&quot;apache-airflow-providers-google&quot;</span> --upgrade --constraint <span class="s2">&quot;</span><span class="si">${</span><span class="nv">CONSTRAINT_URL</span><span class="si">}</span><span class="s2">&quot;</span>
</pre></div>
</div>
<p><strong>Installation and upgrade of Airflow core:</strong></p>
<p>If you don't want to install any extra providers, initially you can use the command set below.</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">AIRFLOW_VERSION</span><span class="o">=</span><span class="m">2</span>.1.0
<span class="nv">PYTHON_VERSION</span><span class="o">=</span><span class="s2">&quot;</span><span class="k">$(</span>python --version <span class="p">|</span> cut -d <span class="s2">&quot; &quot;</span> -f <span class="m">2</span> <span class="p">|</span> cut -d <span class="s2">&quot;.&quot;</span> -f <span class="m">1</span>-2<span class="k">)</span><span class="s2">&quot;</span>
<span class="c1"># For example: 3.6</span>
<span class="nv">CONSTRAINT_URL</span><span class="o">=</span><span class="s2">&quot;https://raw.githubusercontent.com/apache/airflow/constraints-</span><span class="si">${</span><span class="nv">AIRFLOW_VERSION</span><span class="si">}</span><span class="s2">/constraints-no-providers-</span><span class="si">${</span><span class="nv">PYTHON_VERSION</span><span class="si">}</span><span class="s2">.txt&quot;</span>
<span class="c1"># For example: https://raw.githubusercontent.com/apache/airflow/constraints-no-providers-2.1.0/constraints-3.6.txt</span>
pip install <span class="s2">&quot;apache-airflow==</span><span class="si">${</span><span class="nv">AIRFLOW_VERSION</span><span class="si">}</span><span class="s2">&quot;</span> --constraint <span class="s2">&quot;</span><span class="si">${</span><span class="nv">CONSTRAINT_URL</span><span class="si">}</span><span class="s2">&quot;</span>
</pre></div>
</div>
</div>
<div class="section" id="support-for-python-and-kubernetes-versions">
<h2><a class="toc-backref" href="#id9">Support for Python and Kubernetes versions</a><a class="headerlink" href="#support-for-python-and-kubernetes-versions" title="Permalink to this headline"></a></h2>
<p>As of Airflow 2.0 we agreed to certain rules we follow for Python and Kubernetes support.
They are based on the official release schedule of Python and Kubernetes, nicely summarized in the
<a class="reference external" href="https://devguide.python.org/#status-of-python-branches">Python Developer's Guide</a> and
<a class="reference external" href="https://kubernetes.io/docs/setup/release/version-skew-policy">Kubernetes version skew policy</a>.</p>
<ol class="arabic simple">
<li><p>We drop support for Python and Kubernetes versions when they reach EOL. We drop support for those
EOL versions in master right after EOL date, and it is effectively removed when we release the
first new MINOR (Or MAJOR if there is no new MINOR version) of Airflow
For example for Python 3.6 it means that we drop support in master right after 23.12.2021, and the first
MAJOR or MINOR version of Airflow released after will not have it.</p></li>
<li><p>The &quot;oldest&quot; supported version of Python/Kubernetes is the default one. &quot;Default&quot; is only meaningful
in terms of &quot;smoke tests&quot; in CI PRs which are run using this default version and default reference
image available in DockerHub. Currently <code class="docutils literal notranslate"><span class="pre">apache/airflow:latest</span></code> and <code class="docutils literal notranslate"><span class="pre">apache/airflow:2.0.2</span></code> images
are both Python 3.6 images, however the first MINOR/MAJOR release of Airflow release after 23.12.2021 will
become Python 3.7 images.</p></li>
<li><p>We support a new version of Python/Kubernetes in master after they are officially released, as soon as we
make them work in our CI pipeline (which might not be immediate due to dependencies catching up with
new versions of Python mostly) we release a new images/support in Airflow based on the working CI setup.</p></li>
</ol>
</div>
<div class="section" id="installing-airflow-from-released-sources-and-packages">
<h2><a class="toc-backref" href="#id10">Installing Airflow From Released Sources and packages</a><a class="headerlink" href="#installing-airflow-from-released-sources-and-packages" title="Permalink to this headline"></a></h2>
<p>You can also install Airflow using the official sources and packages. Those sources and packages
released are the &quot;official&quot; sources of installation that you can use if you want to verify the
origin of the packages and want to verify checksums and signatures of the packages.</p>
<p>The packages are available at the
<a class="reference external" href="https://downloads.apache.org/airflow/">Official Apache Software Foundations Downloads page</a></p>
<p>The 2.1.0 downloads are available at:</p>
<ul class="simple">
<li><p><a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache-airflow-2.1.0-bin.tar.gz">Apache Airflow 2.1.0 sdist package</a> (<a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache-airflow-2.1.0-bin.tar.gz.asc">asc</a>, <a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache-airflow-2.1.0-bin.tar.gz.sha512">sha512</a>)</p></li>
<li><p><a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache_airflow-2.1.0-py3-none-any.whl">Apache Airflow 2.1.0 wheel package</a> (<a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache_airflow-2.1.0-py3-none-any.whl.asc">asc</a>, <a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache_airflow-2.1.0-py3-none-any.whl.sha512">sha512</a>)</p></li>
<li><p><a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache-airflow-2.1.0-source.tar.gz">Apache Airflow 2.1.0 sources</a> (<a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache-airflow-2.1.0-source.tar.gz.asc">asc</a>, <a class="reference external" href="https://downloads.apache.org/airflow/2.1.0/apache-airflow-2.1.0-source.tar.gz.sha512">sha512</a>)</p></li>
</ul>
</div>
<div class="section" id="set-up-a-database">
<h2><a class="toc-backref" href="#id11">Set up a database</a><a class="headerlink" href="#set-up-a-database" title="Permalink to this headline"></a></h2>
<p>Airflow requires a database. If you're just experimenting and learning Airflow, you can stick with the
default SQLite option. If you don't want to use SQLite, then take a look at
<a class="reference internal" href="howto/set-up-database.html"><span class="doc">Set up a Database Backend</span></a> to setup a different database.</p>
</div>
<div class="section" id="troubleshooting">
<h2><a class="toc-backref" href="#id12">Troubleshooting</a><a class="headerlink" href="#troubleshooting" title="Permalink to this headline"></a></h2>
<p>This section describes how to troubleshoot installation issues.</p>
<div class="section" id="airflow-command-is-not-recognized">
<h3><a class="toc-backref" href="#id13">Airflow command is not recognized</a><a class="headerlink" href="#airflow-command-is-not-recognized" title="Permalink to this headline"></a></h3>
<p>If the <code class="docutils literal notranslate"><span class="pre">airflow</span></code> command is not getting recognized (can happen on Windows when using WSL), then
ensure that <code class="docutils literal notranslate"><span class="pre">~/.local/bin</span></code> is in your <code class="docutils literal notranslate"><span class="pre">PATH</span></code> environment variable, and add it in if necessary:</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">PATH</span><span class="o">=</span><span class="nv">$PATH</span>:~/.local/bin
</pre></div>
</div>
<p>You can also start airflow with <code class="docutils literal notranslate"><span class="pre">python</span> <span class="pre">-m</span> <span class="pre">airflow</span></code></p>
</div>
<div class="section" id="symbol-not-found-py-getargcargv">
<h3><a class="toc-backref" href="#id14"><code class="docutils literal notranslate"><span class="pre">Symbol</span> <span class="pre">not</span> <span class="pre">found:</span> <span class="pre">_Py_GetArgcArgv</span></code></a><a class="headerlink" href="#symbol-not-found-py-getargcargv" title="Permalink to this headline"></a></h3>
<p>If you see <code class="docutils literal notranslate"><span class="pre">Symbol</span> <span class="pre">not</span> <span class="pre">found:</span> <span class="pre">_Py_GetArgcArgv</span></code> while starting or importing Airflow, this may mean that you are using an incompatible version of Python.
For a homebrew installed version of Python, this is generally caused by using Python in <code class="docutils literal notranslate"><span class="pre">/usr/local/opt/bin</span></code> rather than the Frameworks installation (e.g. for <code class="docutils literal notranslate"><span class="pre">python</span> <span class="pre">3.7</span></code>: <code class="docutils literal notranslate"><span class="pre">/usr/local/opt/python&#64;3.7/Frameworks/Python.framework/Versions/3.7</span></code>).</p>
<p>The crux of the issue is that a library Airflow depends on, <code class="docutils literal notranslate"><span class="pre">setproctitle</span></code>, uses a non-public Python API
which is not available from the standard installation <code class="docutils literal notranslate"><span class="pre">/usr/local/opt/</span></code> (which symlinks to a path under <code class="docutils literal notranslate"><span class="pre">/usr/local/Cellar</span></code>).</p>
<p>An easy fix is just to ensure you use a version of Python that has a dylib of the Python library available. For example:</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Note: these instructions are for python3.7 but can be loosely modified for other versions</span>
brew install python@3.7
virtualenv -p /usr/local/opt/python@3.7/Frameworks/Python.framework/Versions/3.7/bin/python3 .toy-venv
<span class="nb">source</span> .toy-venv/bin/activate
pip install apache-airflow
python
&gt;&gt;&gt; import setproctitle
<span class="c1"># Success!</span>
</pre></div>
</div>
<p>Alternatively, you can download and install Python directly from the <a class="reference external" href="https://www.python.org/">Python website</a>.</p>
</div>
</div>
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<li><a class="reference internal" href="#airflow-command-is-not-recognized">Airflow command is not recognized</a></li>
<li><a class="reference internal" href="#symbol-not-found-py-getargcargv"><code class="docutils literal notranslate"><span class="pre">Symbol</span> <span class="pre">not</span> <span class="pre">found:</span> <span class="pre">_Py_GetArgcArgv</span></code></a></li>
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