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Preparing for the Certified OpenStack Administrator Exam

You're reading from   Preparing for the Certified OpenStack Administrator Exam A complete guide for developers taking tests conducted by the OpenStack Foundation

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Product type Paperback
Published in Aug 2017
Publisher Packt
ISBN-13 9781787288416
Length 338 pages
Edition 1st Edition
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Author (1):
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Matt Dorn Matt Dorn
Author Profile Icon Matt Dorn
Matt Dorn
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Table of Contents (13) Chapters Close

Preface 1. Introducing OpenStack and the Certified OpenStack Administrator Exam FREE CHAPTER 2. Setting up Your Practice Exam Environment 3. Keystone Identity Service 4. Glance Image Service 5. Nova Compute Service 6. Neutron Networking Service 7. Cinder Block-Storage Service 8. Swift Object-Storage Service 9. Heat Orchestration Service 10. Troubleshooting 11. Final Tips and Tricks 12. Practice Exam

Using the APIs to check the component status

Some OpenStack service APIs feature the ability to allow users to check the status of the service components without interacting with the daemons directly on the physical machine. These are typically admin-role-only functions and are a convenient way to verify the OpenStack component health. Let's try checking the status of nova components with the openstack compute service list command:

$ openstack compute service list

We should get output similar to Figure 10.6.

Figure 10.6: Output from the 'openstack compute service list' command

The output of this command shows us that the nova-conductor, nova-consoleauth,
nova-scheduler, and nova-compute services are all up and running. In a real-world OpenStack infrastructure, we would see multiple nova-compute services for every hypervisor in the environment.

Here are some other...

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