Zookeeper in AWS

1. If you use private IPs, you may have the following error:

http://stackoverflow.com/questions/309409881/zookeeper-error-cannot-open-channel-to-x-at-election-address

2. Use Netflix Exhibitor

3. Reserve your instances if you know you will use them for over a year(decreased cost)

4. Or you can use Amazon EMR to provision a Zookeeper cluster, but you have less control