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!

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Table of Contents (13 chapters)
Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
Introducing OpenStack and the Certified OpenStack Administrator Exam
Introducing OpenStack and the Certified OpenStack Administrator Exam
A brief history of the cloud
About OpenStack
About the Certified OpenStack Administrator exam
Seven steps to becoming a Certified OpenStack Administrator
Summary
2
Setting up Your Practice Exam Environment
Setting up Your Practice Exam Environment
About VirtualBox
Open Virtual Appliance (OVA)
A traditional OpenStack cloud
The all-in-one Newton environment
Minimum hardware requirements
Downloading and installing VirtualBox
Configuring VirtualBox networking
Importing the appliance
Summary
3
Keystone Identity Service
Keystone Identity Service
About Keystone
Authentication in action
The admin life
Keystone and the OpenStack CLI
Project scope via CLI
Exam objectives
Summary
4
Glance Image Service
Glance Image Service
What is a cloud image?
Exam objectives
Summary
5
Nova Compute Service
Nova Compute Service
Nova - the compute orchestrator
Exam objectives
Summary
6
Neutron Networking Service
Neutron Networking Service
About Neutron
Neutron architecture
Exam objectives
Summary
7
Cinder Block-Storage Service
Cinder Block-Storage Service
About Cinder
Exam objectives
Summary
8
Swift Object-Storage Service
Swift Object-Storage Service
About Swift
Exam objectives
Summary
9
Heat Orchestration Service
Heat Orchestration Service
About Heat
Heat architecture
Heat templates
Heat resources
Exam objectives
Summary
10
Troubleshooting
Troubleshooting
Debugging the CLI
Managing OpenStack daemons
Using the APIs to check the component status
Important OpenStack service directories
Exam objective - analyzing log files
Managing MySQL
Summary
11
Final Tips and Tricks
Final Tips and Tricks
Project scope
Time management
CLI help
External monitors
Issues during the exam
Diving deeper into OpenStack
Summary
12
Practice Exam
Practice Exam
Before you begin...

Neutron architecture

Neutron is made up of five daemons, as shown in Figure 6.1.

Figure 6.1: High-level view of Neutron architecture
  • neutron-server: The API and primary gateway to Neutron. One must interact with neutron-server to create, list, delete, and manage networks and other network resources.
  • neutron-dhcp-agent: Provides DHCP services to DHCP-enabled Neutron subnets. Behind the scenes, neutron-dhcp-agent actually uses dnsmasq, the popular lightweight DHCP server software, within a network namespace. Network namespaces are a feature of the Linux kernel and partition the use of the network, allowing segregation of network resources despite similar IP address ranges.
  • neutron-l3-agent: Creates Neutron routers. Behind the scenes, Neutron routers are network namespaces with unique routing tables and iptables rules.
  • neutron-metadata-agent: Provides metadata services to instances...
Previous Section
End of Section 3
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