How to register existing Kafka service to Ambari?

[#1]

I have upgraded Ambari to 2.1.0 and HDP to 2.2.6, now I want to manage Kafka using Ambari as it was not managed by Ambari in Ambari1.5.1. How to add Kafka service to Ambari?

[#2]

@schintalapani@hortonworks.com But service already exists in my case, what would be Ambari API call to register this service?

[#3]

It should not matter to Ambari. During the installation phase, it will have the RPM already there so it will be able to move to the next step. You should make a backup of your configuration file as it will be overwritten.

Do you experience a different behaviour ?