Book Image

Preparing for the Certified OpenStack Administrator Exam

By : Matt Dorn
Book Image

Preparing for the Certified OpenStack Administrator Exam

By: Matt Dorn

Overview of this book

This book provides you with a specific strategy to pass the OpenStack Foundation’s first professional certification: the Certified OpenStack Administrator. In a recent survey, 78% of respondents said the OpenStack skills shortage had deterred them from adopting OpenStack. Consider this an opportunity to increase employer and customer confidence by proving you have the skills required to administrate real-world OpenStack clouds. You will begin your journey by getting well-versed with the OpenStack environment, understanding the benefits of taking the exam, and installing an included OpenStack All-in-One Virtual Appliance to work through objectives covered throughout the book. After exploring the basics of the individual services, you will be introduced to strategies to accomplish the exam objectives relevant to Keystone, Glance, Nova, Neutron, Cinder, Swift, Heat, and troubleshooting. Finally, you’ll benefit from the special tips section and a practice exam to put your knowledge to the test. By the end of the journey, you will be ready to become a Certified OpenStack Administrator!
Table of Contents (13 chapters)

CLI help

If you forget how a specific CLI command works, you can always rely on the help! Here are some examples of using python-openstackclient help.

Figure 11.4: Output from the 'openstack help' command

Using the help is a two-step process.

Step 1: Determine how to perform a particular action using openstack help.

You can filter specific actions using grep. Here are some examples:

$ openstack help | grep domain
$ openstack help | grep project
$ openstack help | grep image
$ openstack help | grep server
$ openstack help | grep network
$ openstack help | grep volume

Step 2: After you find out the action you want to perform, you can provide --help to explore all available positional arguments and flags. Here are some examples:

$ openstack domain create --help
$ openstack project create --help
$ openstack image add project --help
$ openstack server create --help
$ openstack...