Exam objectives
Let's take a look at the Nova exam objectives.
The following table breaks down various Nova-related objectives you should know for the COA exam. As you can see, all of these tasks can be completed on both the Horizon dashboard and CLI. Remember, time is of the essence on the exam—and in many cases, it may be faster to tackle a task on the dashboard. If you feel confident using the CLI and don't need to fumble through help to discover arguments, feel free to use it!
Figure 5.3: Nova exam objectives
Exam objective - managing key pairs
Key pairs are an alternative to password-based authentication when accessing an instance over SSH. A key pair consists of two keys: a public key and a private key. These keys must be used together to gain access to an instance.
When it comes to SSH keys and Nova, an OpenStack user has two options:
- Send a request to Nova to generate a brand new SSH public and private key for you. In this case, Nova will store the public key in its database and give you...
