Feel free to close or mark this as a duplicate.
We recently provisioned 4 new Kafka brokers, 2 in eqiad and 2 in codfw. The 2 in eqiad are set up and running using the conf100x Zookeepers. However, there is no provisioned Zoookeeper cluster in codfw.
I'm not sure what the plans for etcd in codfw are, but we'll need to set up a Zookeeper cluster there before we can use the new codfw Kafka nodes.
The same misc hardware we just ordered for the Kafka brokers would be fine for the Zookeepers too.