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OpenStack Cloud Computing Cookbook

You're reading from   OpenStack Cloud Computing Cookbook Over 100 practical recipes to help you build and operate OpenStack cloud computing, storage, networking, and automation

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788398763
Length 398 pages
Edition 4th Edition
Languages
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Authors (4):
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James Denton James Denton
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James Denton
Egle Sigler Egle Sigler
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Egle Sigler
Cody Bunch Cody Bunch
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Cody Bunch
Kevin Jackson Kevin Jackson
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Kevin Jackson
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Toc

Table of Contents (15) Chapters Close

OpenStack Cloud Computing Cookbook Fourth Edition
Contributors
Preface
Another Book You May Enjoy
1. Installing OpenStack with Ansible FREE CHAPTER 2. The OpenStack Client 3. Keystone – OpenStack Identity Service 4. Neutron – OpenStack Networking 5. Nova – OpenStack Compute 6. Glance – OpenStack Image Service 7. Cinder – OpenStack Block Storage 8. Swift – OpenStack Object Storage 9. OpenStack Orchestration Using Heat and Ansible 10. Using OpenStack Dashboard Index

Creating and assigning floating IPs


Floating IPs in OpenStack are static IPv4 addresses that are mapped to instances behind Neutron routers and provide direct inbound connectivity to those instances. Floating IPs can be used in a similar fashion to Elastic IPs in Amazon Web Services, where users can quickly remap an IP address from one instance to another in the event of failure. The heart of this functionality is network address translation. A floating IP is usually considered an external address that is mapped to the internal address configured on an instance. The NAT is implemented on the Neutron router connected to the instance's network. Floating IPs offer connectivity to instances that would otherwise be isolated behind a Neutron router on a non-routable network.

Getting ready

Recall that instances are connected to ports that reflect the connected network and associated IP address. When creating a floating IP, the following information is required:

  • External network name or ID

When assigning...

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