The PackStack installer for OpenStack is largely considered an installer for Test and Proof-of-Concept OpenStack environments. Being such, the PackStack Installer can automatically create a loopback device for use with Cinder if you allow it to. In my lab, I would actually rather create a separate volume for Cinder to use. Below are the steps needed to do so.
packstack
Packstack Installer Failure: “Error: Could not start Service[rabbitmq-server]: Execution of ‘/usr/bin/systemctl start rabbitmq-server’ returned 1”
Sitting in my hotel room today, I kept running into this error while trying to install OpenStack on a RHEL 7.1 VM running on my laptop. Digging through logs was not helping me one bit, and neither was trying to run "puppet apply" on the failing puppet manifests to see if I could get more info with which to troubleshoot. Below is the specific error that I was running into. Note that my RHEL VM's IP address is 192.168.122.75. This IP address is pre-pended to the puppet module names. Your output, will obviously, vary. Note that this output is truncated.