title: Kafka consumer lag monitoring visualization
body: <p>I'm new to Kafka. During study to kafka, I think monitoring consumer's lag is needed. When I search from google and docs, I found few ways.</p>
  <ol>
  <li>Kafka - Prometheus - graphana</li>
  <li>kafka - burrow - someDB - graphana</li>
  <li>kafka - burrow_stat?(I can't understand what it is..)</li>
  <li>kafka - datadog
  what I want to ask is
  document says that burrow is for monitoring, can I visualize like graph(dashboard)?
  without other tools like graphana or kibana or datadog??</li>
  </ol>
  <p>I just trying to get less pipeline steps. What should be the simple way to visualize consumer's lag?</p>