I'm following the Install Guide http://docs.openstack.org/liberty/install-guide-ubuntu/heat-verify.html (here) and have found that the walkthrough has been very well written and easy to follow, and when I've messed up I've generally had the troubleshooting skills to find and fix the problem. However, I'm stuck at this point.

I've installed the heat engine on my controller node. The verification steps tell me I should run heat service-list and that there should be 4 instances listed.

I only have two listed in my lab.

I'm new enough to OpenStack that I don't know what that means or what I should do to fix it. Do these components do different things and therefore I need to fix it? Are these components akin to a worker thread pool and therefore I don't need to worry about it? Are these components something else entirely?

I'd appreciate the community's input.