title: What should be adminclient-congs.conf in kafka acl authorization
body: <p>I am running kafka on windows. I have used SASL/PLAIN mechanism for authentication and SSL for encryption. I have to enable Authorization but I have no idea what the file &quot;adminclient-congs.conf&quot; should have in the command</p>
  <pre><code>kafka-acls --bootstrap-server localhost:9092 --command-config adminclient-configs.conf --add --allow-principal User:alice --allow-principal User:fred --allow-host host-1 --allow-host host-2 --operation read --operation write --topic finance-topic
  </code></pre>
  <p>I looks like this file should contain credentials of the root user but I don't really know the format and how to make root user when using SASL_SSL</p>