At TVbeat we run this on a cron within each of our cloudformation stacks.
R53 records look like zookeeper-staging.example.com
ansible :) & awscli: sudo pip install awscli
curl -L http://pkgs.repoforge.org/htop/htop-1.0.2-1.el6.rf.x86_64.rpm -o /tmp/test.rpm && sudo rpm -i /tmp/test.rpm && htop |