title: Find broker id used in the Kafka cluster
body: <p>I want to know the list of taken broker ids in a kafka cluster. For example, in a cluster with 10 nodes if I create a topic with 10 partitions(or more) I can see from the output of a describe topic command, the brokers to which it has been assigned. </p>
  
  <pre><code>./bin/kafka-topics --describe --zookeeper &lt;zkconnect&gt;:2181 --topic rbtest3
  </code></pre>
  
  <p>Can I collect this information without creating a topic?</p>