In this chapter, we talked about how organizations are using modern software development techniques to improve the quality of their OpenStack deployments. We built a simple deployment pipeline using Puppet, Git, and Jenkins and we used it to deploy and test two components of the OpenStack infrastructure. From here, additional components can be installed, configured, and tested in a controlled fashion.
This can seem like a lot of extra effort for folks who are used to running Packstack and getting an environment up quickly. In our experience, though, without the proper infrastructure for managing and testing changes, these deployment become unwieldy at scale. As a reminder, the three basic tenets that we're following are:
Small, manageable changes, not large upgrade cycles
Because most organizations will already have some experience and tooling around these principles in software development, deployment pipelines vary greatly from organization...