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Preparing for the Certified OpenStack Administrator Exam
Preparing for the Certified OpenStack Administrator Exam

Preparing for the Certified OpenStack Administrator Exam: A complete guide for developers taking tests conducted by the OpenStack Foundation

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Preparing for the Certified OpenStack Administrator Exam

Setting up Your Practice Exam Environment

In the previous chapter, we took a look at the origin of OpenStack as well as some details on the Certified OpenStack Administrator exam. We will now focus on installing the OpenStack Newton virtual appliance included with this book. This virtual appliance will give you a working OpenStack environment that can be accessed on your local laptop or desktop! It is recommended that you have this environment up and running before working through the chapters in this book.

As you read through each objective, follow along by performing the actions in your environment. If you already have access to an OpenStack environment, you can certainly use it—but be aware that the appliance has been previously populated with users, projects, instances, networks, and templates to replicate a real-world OpenStack environment. For a script to create the...

About VirtualBox

VirtualBox is a popular hypervisor available for download for Windows, Mac, Linux, and Solaris. Unlike VMware Workstation Pro for Windows and VMware Fusion for Mac, VirtualBox is free and open source. It's ideal for testing or developing, and allows you to set up multiple operating systems on one system. VirtualBox is considered to be a Type-2 hypervisor, which is intended to run on a host operating system. Type-1 hypervisors, also known as native or bare-metal hypervisors, run directly on a host's hardware.

Open Virtual Appliance (OVA)

To make deployment of your practice COA exam environment simple and easy, this book provides you with an OVA or Open Virtual Appliance to easily import into VirtualBox. An OVA is a compressed .tar file containing the following:

  • Virtual Machine Disk File (VMDK): A snapshot of a disk's contents. The particular VMDK included in your OVA contains a previously configured OpenStack Newton environment.
  • Open Virtualization Format (OVF): An XML file that describes how the VMDK should be run. It includes information on the number of virtual CPUs, memory size, network configuration, and virtual devices.
  • Manifest (MF): This contains a hash of each file to validate the authenticity and integrity of the package.

A traditional OpenStack cloud

A typical production OpenStack cloud consists of the following:

  • Controller: The controller is the backbone of the OpenStack cloud. It usually contains:
    • MariaDB database: A community-developed fork of the MySQL relational database. Most OpenStack services use a SQL database for storing data in tables of columns and rows. For example, imagine viewing all the tables inside a Nova database. You would see names of the instances, their unique identifiers (UUIDs), the projects that own those instances, and other Nova-related metadata.
    • RabbitMQ: A popular message queue service that provides messaging services via the AMQP protocol. RabbitMQ allows the daemons within a specific service to communicate status information and coordinate fulfillment of specific actions. Although OpenStack supports a variety of message queue programs, RabbitMQ is most commonly...

The all-in-one Newton environment

The provided virtual appliance contains all core OpenStack services on a single virtual machine. To download the appliance, please go to the official book repository at https://github.com/PacktPublishing/Preparing-for-the-Certified-OpenStack-Administrator-Exam.

See Figure 2.1. The appliance runs inside VirtualBox which runs on your host operating system. Figure 2.2 provides some additional information about the virtual appliance details. We will talk more about this as we progress through the chapters.

Figure 2.1: The virtual appliance contains all core OpenStack services featured on the COA exam
The Ceilometer Telemetry service is not a required learning objective on the exam and is not installed on the virtual appliance.
Figure 2.2: Information about the virtual appliance included with this book
...

Minimum hardware requirements

Although VirtualBox has minimal system requirements, the included all-in-one OpenStack Newton Virtual Appliance requires:

  • 2 GHz or faster 64-bit (x64) processor with Intel VTx or AMD-V support
  • 6 GB available RAM
  • 10 GB available hard disk space
Most modern CPUs contain a hardware-assisted virtualization feature to help accelerate Type-1 and Type-2 hypervisors. Before importing the OVA, ensure that your system's virtualization extensions are turned on in the BIOS or UEFI. Access your BIOS or UEFI firmware by entering the setup screen. Once inside, look for any of the following options and make sure they are turned on: Intel Virtualization Technology, Intel VT-X, AMD-V, Virtual Extensions, and so on. Save your settings and reboot the system.

Downloading and installing VirtualBox

Once you are on a system that meets the minimum system requirements, proceed with the following steps:

  1. Navigate to the VirtualBox downloads page at https://www.virtualbox.org/wiki/Downloads.
  2. Download and install the latest version of VirtualBox for your host operating system.

Configuring VirtualBox networking

  1. Launch the VirtualBox application.
  2. From the VirtualBox menu bar, select Preferences.
  3. From the VirtualBox Preferences menu, select the Network icon.
  4. Verify that Host-only Networks is highlighted.

Mac/Linux

  1. If you can see vboxnet0 on the list, highlight and click on the tool icon.
  2. If you do not see vboxnet0, click on the + icon. Next, highlight and click on the tool icon. Click on OK to save your settings. See Figure 2.3.
Figure 2.3: Adding the vboxnet0 host-only network to VirtualBox on Mac or Linux

Windows

  1. If you can see VirtualBox...

Importing the appliance

  1. From the VirtualBox menu bar, select Import Appliance. This will be under the File menu in Windows.
  2. Click on the folder icon to browse your local drive.
  3. Select coa-aio-newton.ova and click on Import or Open.
  4. Click on Continue to proceed with installation.
  1. Click on Import.
  2. Once importing has completed, verify that the virtual machine has the proper network settings. See Figure 2.6.
Figure 2.6: The virtual appliance should automatically have two adapters assigned
  1. Start up the virtual machine by highlighting the appliance and clicking on Start. See Figure 2.7.
Figure 2.7: Select start to power on the virtual appliance
If you receive an error when attempting to start the virtual machine, verify you meet the aforementioned minimum system requirements. Also verify that virtualization extensions are turned on in the BIOS or UEFI.
  1. Give the appliance time...

Summary

You should now have your very own working OpenStack environment, fully deployed and running on your laptop or desktop! This chapter discussed VirtualBox and the convenience of the OVA format, as well as the components that make up a traditional OpenStack environment.

At this point, you should be able to connect to the virtual appliance via the Horizon dashboard and terminal client on your system. You are certainly free to use your own OpenStack environment, but the exercises and practice exam in this book will require resources previously created in the provided virtual appliance.

In the next chapter, we will discuss the Keystone identity service and work through all Keystone exam objectives via the CLI and Horizon dashboard. Let's get started!

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Key benefits

  • • Focuses on providing a clear, concise strategy so you gain the specific skills required to pass the Certified OpenStack Administrator exam
  • • Includes exercises and performance-based tasks to ensure all exam objectives can be completed via the Horizon dashboard and command-line interface
  • • Includes a free OpenStack Virtual Appliance to practice the objectives covered throughout the book
  • • Includes a practice exam to put your OpenStack skills to the test to prove you have what it takes to conquer the live exam
  • • Updated for the 2017 exam featuring OpenStack Newton

Description

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!

Who is this book for?

This book is for IT professionals, system administrators, DevOps engineers, and software developers with basic Linux command-line and networking knowledge. It’s also a great guide for those interested in an entry-level OpenStack position but have limited real-world OpenStack experience. After passing the exam, Certified OpenStack Administrators will prove they have the required skills for the job.

What you will learn

  • •Manage the Keystone identity service by creating and modifying domains, groups, projects, users, roles, services, endpoints, and quotas.
  • •Upload Glance images, launch new Nova instances, and create flavors, key pairs, and snapshots.
  • •Discover Neutron tenant and provider networks, security groups, routers, and floating IPs.
  • •Manage the Cinder block storage service by creating volumes and attaching them to instances.
  • •Create Swift containers and set access control lists to allow read/write
  • access to your objects.
  • •Explore Heat orchestration templates and create, list, and update stacks.
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Table of Contents

12 Chapters
Introducing OpenStack and the Certified OpenStack Administrator Exam Chevron down icon Chevron up icon
Setting up Your Practice Exam Environment Chevron down icon Chevron up icon
Keystone Identity Service Chevron down icon Chevron up icon
Glance Image Service Chevron down icon Chevron up icon
Nova Compute Service Chevron down icon Chevron up icon
Neutron Networking Service Chevron down icon Chevron up icon
Cinder Block-Storage Service Chevron down icon Chevron up icon
Swift Object-Storage Service Chevron down icon Chevron up icon
Heat Orchestration Service Chevron down icon Chevron up icon
Troubleshooting Chevron down icon Chevron up icon
Final Tips and Tricks Chevron down icon Chevron up icon
Practice Exam Chevron down icon Chevron up icon

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Haven Sep 11, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
really good one! i used it for preparing my COA exam!
Amazon Verified review Amazon
Todd Crowley Sep 11, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
It is a concise, well written, and thorough instruction for the COA exam.
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Miquel May 17, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Perfecto si te estás preparando la certificación OpenStack COA. Viene con un temario extenso en cuanto a la preparación del examen y muchas prácticas perfectamente detalladas. Recomendado 100%
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hk yoon Feb 08, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This is best and the only book for COA exam, as far as I know.But, more importantly, whether getting COA is your immediate objective or not, this book is very succinct and straight to the point in learning OpenStack.With it's own virtual appliance (.ova file) supplied, you can practice without, or before, the hassle of installing and configuring the system.The coverage is broad and within the core concepts, and the feedback was more than surprisingly helpful, that I don't hesitate to giving 5 stars!
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Amazon Customer Feb 23, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Very good staff! I recommend it to everyone who consider to take the COA exam.
Amazon Verified review Amazon
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