Crossing the finish line does feel nice for sure. I am hoping that the raw power of multi-tenant isolation was explained and demonstrated in this chapter. Always feels good to have options, in order to meet your cloud consumer demands. Before concluding this chapter, let's take a moment to recap this chapter:
We explained what multi-tenant isolation and possible use cases within OpenStack
We stepped through the setup process for multi-tenant isolation
We demonstrated the tenant configurations needed after multi-tenant isolation is enabled on your cloud
We developed an Ansible playbook and role to automate migrating an instance to a specific compute node using the nova migrate command
The next chapter also will be a very interesting one, as a cloud operator you will have hypervisor failures and will have to do maintenance, eventually. In order to successfully handle both of those tasks, you will have to evacuate instances from your compute nodes. Of course, you can do this manually, but...