Summary

In this chapter, we looked at the different kinds of Heat templates and how to launch Heat stacks from these templates. Heat stacks offer a new level of opportunity to launch instances and tie them all together into a useful and functional set of instances and complementary resources. This completes the set of OpenStack components that we are going to review in this book. In the upcoming chapters, we are going to look at how to architect an OpenStack cluster, how to monitor the cluster, and how to troubleshoot OpenStack infrastructure. In Chapter 11, Scaling Horizontally, we will start with the architecture of an OpenStack cluster and look at how to scale it.