In this chapter, we will study the basics of Heat stacks and templates. We will also discuss the autoscaling and high availability mechanisms supported by Heat.
The following are the learning objectives of this chapter:
Heat basics: stacks and templates
Autoscaling
HA mechanism for the different levels (services running inside an instance, individual instances, stacks)
Nested stacks
Please refer to http://docs.openstack.org/developer/heat/glossary.html for the explanations of all the terminologies used in the chapter.