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| <div class="section" id="checking-airflow-health-status"> |
| <h1>Checking Airflow Health Status<a class="headerlink" href="#checking-airflow-health-status" title="Permalink to this headline">¶</a></h1> |
| <p>To check the health status of your Airflow instance, you can simply access the endpoint |
| <code class="docutils literal notranslate"><span class="pre">"/health"</span></code>. It will return a JSON object in which a high-level glance is provided.</p> |
| <div class="highlight-JSON notranslate"><div class="highlight"><pre><span></span><span class="p">{</span> |
| <span class="nt">"metadatabase"</span><span class="p">:{</span> |
| <span class="nt">"status"</span><span class="p">:</span><span class="s2">"healthy"</span> |
| <span class="p">},</span> |
| <span class="nt">"scheduler"</span><span class="p">:{</span> |
| <span class="nt">"status"</span><span class="p">:</span><span class="s2">"healthy"</span><span class="p">,</span> |
| <span class="nt">"latest_scheduler_heartbeat"</span><span class="p">:</span><span class="s2">"2018-12-26 17:15:11+00:00"</span> |
| <span class="p">}</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <ul> |
| <li><p class="first">The <code class="docutils literal notranslate"><span class="pre">status</span></code> of each component can be either “healthy” or “unhealthy”.</p> |
| <blockquote> |
| <div><ul class="simple"> |
| <li>The status of <code class="docutils literal notranslate"><span class="pre">metadatabase</span></code> is depending on whether a valid connection can be initiated |
| with the database backend of Airflow.</li> |
| <li>The status of <code class="docutils literal notranslate"><span class="pre">scheduler</span></code> is depending on when the latest scheduler heartbeat happened. If the latest |
| scheduler heartbeat happened 30 seconds (default value) earlier than the current time, scheduler component is |
| considered unhealthy. You can also specify this threshold value by changing |
| <code class="docutils literal notranslate"><span class="pre">scheduler_health_check_threshold</span></code> in <code class="docutils literal notranslate"><span class="pre">scheduler</span></code> section of the <code class="docutils literal notranslate"><span class="pre">airflow.cfg</span></code> file.</li> |
| </ul> |
| </div></blockquote> |
| </li> |
| <li><p class="first">The response code of <code class="docutils literal notranslate"><span class="pre">"/health"</span></code> endpoint is not used to label the health status of the |
| application (it would always be 200). Hence please be reminded not to use the response code here |
| for health-check purpose.</p> |
| </li> |
| </ul> |
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