Configure Kafka port per hostname in Cloudera

[#1]

Hello,

We need advise about advanced Kafka configuration in Cloudera

We are using cloudera env installed on 6 servers per following distribution:

Namenode1-2

Datanode1-3

Application node

kafka service is installed on data nodes 1-3 and we would like to know:

How can we configure Kafka port per hostname and not per service?
we would like to have following outcome for example:
datanode1 - remain with kafka default port 9092
datanode2 - will be configured with new port #
datanode3 - will be configured with new port #

Thanks

Noam

[#2]

That's an odd thing to do 🙂 If you need to use another port for some reason, it would be better to change the ports on all hosts consistently, using the "TCP Port" or the "TLS/SSL Port" properties in Cloudera Manager, whether are you connecting without TLS or with it, respectively.

It is possible to configure ports on a host-by-host basis, but it makes it harder to maintain and client configuration becomes a little more cumbersome. To change the port for a particular host, go to Kafka > Instances > Click on the broker your want the change the port for > Configuration > Continue Editing Role Instance.

Then enter the following in the "Kafka Broker Advanced Configuration Snippet (Safety Valve) for kafka.properties" property:

port=9096
listeners=PLAINTEXT://:9096

The PLAINTEXT value will depend on your cluster config:

• PLAINTEXT: No Kerberos, No TLS
• SSL: No Kerberos, Using TLS
• SASL_PLAINTEXT: Using Kerberos, No TLS
• SASL_SSL: Using Kerberos, Using TLS

After that restart the Broker instance that was reconfigured.