9250/metrics">http://localhost:9250</a> and <a href="http://localhost:9251/metrics">http://localhost:9251</a>, respectively.</p>
<p>To test Prometheus&rsquo; alerting feature, kill one of the Flink task managers via</p>
<pre tabindex="0"><code>docker kill taskmanager1
</code></pre><p>Our Flink job can recover from this partial failure via the mechanism of <a href="//nightlies.apache.org/flink/flink-docs-release-1.7/dev/stream/state/checkpointing.html">Checkpointing</a>. Nevertheless, after roughly one minut