kafka + describe views for ConsumerGroupCommand
The command kafka-consumer-groups.sh --group gonb_cars --describe --bootstrap-server kafka1:6667
will be used to describe one consumer group only, i.e gonb_cars
The command seems correct and would show the correct result, this particular consumer group has only one consumer in it namely consumer-1.
As per the question, you are looking for multiple consumer groups, which can be seen via the -—list parameter.