Book Image

OpenStack Cloud Computing Cookbook - Fourth Edition

By : Kevin Jackson, Cody Bunch, Egle Sigler, James Denton
Book Image

OpenStack Cloud Computing Cookbook - Fourth Edition

By: Kevin Jackson, Cody Bunch, Egle Sigler, James Denton

Overview of this book

This is the fourth edition of the industry-acclaimed OpenStack Cloud Computing Cookbook, created by four recognized OpenStack experts. It has now been updated to work with the latest OpenStack builds, using tools and processes based on their collective and vast OpenStack experience. OpenStack Open Source Cloud software is one of the most used cloud infrastructures to support a wide variety of use cases, from software development to big data analysis. It is developed by a thriving community of individual developers from around the globe and backed by most of the leading players in the cloud space today. We make it simple to implement, massively scalable, and able to store a large pool of data and networking resources. OpenStack has a strong ecosystem that helps you provision your cloud storage needs. Add OpenStack's enterprise features to reduce the cost of your business. This book will begin by showing you the steps to build up an OpenStack private cloud environment using Ansible. You'll then discover the uses of cloud services such as the identity service, image service, and compute service. You'll dive into Neutron, the OpenStack Networking service, and get your hands dirty with configuring networks, routers, load balancers, and more. You’ll then gather more expert knowledge on OpenStack cloud computing by managing your cloud's security and migration. After that, we delve into OpenStack Object storage and you’ll see how to manage servers and work with objects, cluster, and storage functionalities. Finally, you will learn about OpenStack dashboard, Ansible, Keystone, and other interesting topics.
Table of Contents (15 chapters)
OpenStack Cloud Computing Cookbook Fourth Edition
Contributors
Preface
Another Book You May Enjoy
Index

Using image snapshots


In OpenStack, a snapshot is an image that reflects the state of an instance at a point in time. Snapshots are often used to backup instances or migrate instances from one cloud to another, and can even be shared with other projects like regular images.

Creating snapshots

Snapshots in OpenStack can be created using the openstack server image create command.

Getting ready

When creating a snapshot, ensure that you are authenticated as an administrator or are the owner of the instance. You will need the following details:

  • Instance name or ID

  • Image name

For our example, the following will be used:

  • Instance name: COOKBOOK_TEST_INSTANCE

  • Image: COOKBOOK_TEST_SNAPSHOT_20170824

How to do it…

With the OpenStack client installed on our system, we are now able to create a snapshot with the following command:

openstack server image create \
--name COOKBOOK_TEST_SNAPSHOT_20171016 \
COOKBOOK_TEST_INSTANCE

The output will resemble the following:

How it works…

Images snapshots are created with...