https://community.cloudera.com/t5/Support-Questions/Not-able-to-read-from-kafka-topic/m-p/269622#M206976 <P>&nbsp;I am running Metron using Ambari in single node and also set up three node. Few months back , we are able to send messages to&nbsp; Kafka topic and see in Metron dashboard. But now , I am getting the following error message "Connection to node -1 could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)". For three node also getting the same warning and not able to see any messages. Installed kafka broker in all three nodes.&nbsp; What are all the properties needs to be configured in Kafka server.properties.</P><P>&nbsp;</P><P>listeners=PLAINTEXT://node1:6667</P><P>&nbsp;</P> Fri, 16 Sep 2022 14:32:51 GMT nhemamalini 2022-09-16T14:32:51Z