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OpenStack Essentials
OpenStack Essentials

OpenStack Essentials: Untangle the complexity of OpenStack clouds through this practical tutorial , Second Edition

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OpenStack Essentials

Chapter 2. Identity Management

In the previous chapter, we installed OpenStack using RDO Triple-O. Now that OpenStack is ready for use, we will begin to investigate what was installed and how to use it component by component, starting with identity management. Keystone is the identity management component in OpenStack. In this chapter, we will look at service registration and the relationship of users with tenants, and the role of a user in a tenant.

Services and endpoints

Each one of the components in an OpenStack cluster is registered with Keystone. Each of the services has endpoints and each of the services has a user. A service in Keystone is a record of an OpenStack component that will need to be contacted to manage the virtual resources being managed by OpenStack. Endpoints are the URLs to contact these services. Let's look at this on the command line. Remember the overcloudrc file on the instack node? You'll need the information in that file to authenticate and interact with the OpenStack overcloud. The information is as follows:

undercloud# cat overcloudrc
export OS_NO_CACHE=True
export OS_CLOUDNAME=overcloud
export OS_AUTH_URL=http://192.0.2.6:5000/v2.0
export NOVA_VERSION=1.1
export COMPUTE_API_VERSION=1.1
export OS_USERNAME=admin
export no_proxy=,192.0.2.6
export OS_PASSWORD=mg4xQF4bnETuNgGGtp6t9CXMJ
export PYTHONWARNINGS="ignore:Certificate has no, ignore:A true SSLContext object is not available"
export...

Interacting with Keystone in the dashboard

Now that we have worked through managing Keystone resources on the command line, let's take a look at how to do the same through the web interface. Connect to the dashboard and log in as the admin user using the password from the overcloudrc file. Select the Admin menu, and then select the identity submenu. Here, you'll see menu options to manage projects and users. Select the Users menu. You'll see the same list of users from the openstack user list command on the command-line. In the web interface, select the Create User button in the top-right corner of the User Management panel.

Fill in the form as appropriate:

Interacting with Keystone in the dashboard

Before you can create the user, you'll have to select a project. If there isn't one that you want to add the new user to in the existing list, you can create one. Projects can be created inline of a user creation. Click the button next to the project selection drop-down menu. A Create Project form will show up...

Endpoints in the dashboard

We have looked at user management in the dashboard; now let's look at service and endpoints in the web interface. The dashboard does not provide a way to add or update services and endpoints. This is something reserved for the command line because it is usually done once and does not need any more management once it is done. Click on the Project menu and the Access & Security submenu. There will be a set of tabs to select from across the top of the screen, as shown in the following screenshot. Select API Access. Does this look familiar?

Endpoints in the dashboard

Summary

In this chapter, we looked at managing services, endpoints, users, projects, and roles through both the command line and the dashboard. Now that we have created users and assigned them roles in projects to manage virtual resources, let's start collecting the resources needed to launch an instance. The first resource that is needed before an instance can be launched is a disk image for that instance to launch from.

In the next chapter, we will look at Glance, the disk image management component, and how to import and build images to launch instances.

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Key benefits

  • Navigate through the complex jungle of components in OpenStack using practical instructions
  • This book helps administrators, cloud engineers, and even developers to consolidate and control pools of compute, networking, and storage resources
  • Learn to use the centralized dashboard and administration panel to monitor large-scale deployments

Description

OpenStack is a widely popular platform for cloud computing. Applications that are built for this platform are resilient to failure and convenient to scale. This book, an update to our extremely popular OpenStack Essentials (published in May 2015) will help you master not only the essential bits, but will also examine the new features of the latest OpenStack release - Mitaka; showcasing how to put them to work straight away. This book begins with the installation and demonstration of the architecture. This book will tech you the core 8 topics of OpenStack. They are Keystone for Identity Management, Glance for Image management, Neutron for network management, Nova for instance management, Cinder for Block storage, Swift for Object storage, Ceilometer for Telemetry and Heat for Orchestration. Further more you will learn about launching and configuring Docker containers and also about scaling them horizontally. You will also learn about monitoring and Troubleshooting OpenStack.

Who is this book for?

This book is perfect for administrators, cloud engineers, and operators who want to get started with OpenStack, solve basic problems encountered during deployment, and get up to speed with the latest release of OpenStack. Familiarity with the Linux command line and experience with Linux system administration is expected.

What you will learn

  • Brush up on the latest release, and how it affects the various components
  • Install OpenStack using the Packstack and RDO Manager installation tool
  • Learn to convert a computer node that supports Docker containers
  • Implement Ceph Block Device images with OpenStack
  • Create and allocate virtual networks, routers and IP addresses to OpenStack Tenants.
  • Configuring and Launching a Docker container.

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Aug 31, 2016
Length: 182 pages
Edition : 2nd
Language : English
ISBN-13 : 9781786462664
Vendor :
OpenStack
Tools :

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Product Details

Publication date : Aug 31, 2016
Length: 182 pages
Edition : 2nd
Language : English
ISBN-13 : 9781786462664
Vendor :
OpenStack
Tools :

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Table of Contents

14 Chapters
1. RDO Installation Chevron down icon Chevron up icon
2. Identity Management Chevron down icon Chevron up icon
3. Image Management Chevron down icon Chevron up icon
4. Network Management Chevron down icon Chevron up icon
5. Instance Management Chevron down icon Chevron up icon
6. Block Storage Chevron down icon Chevron up icon
7. Object Storage Chevron down icon Chevron up icon
8. Telemetry Chevron down icon Chevron up icon
9. Orchestration Chevron down icon Chevron up icon
10. Docker Chevron down icon Chevron up icon
11. Scaling Horizontally Chevron down icon Chevron up icon
12. Monitoring Chevron down icon Chevron up icon
13. Troubleshooting Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.7
(3 Ratings)
5 star 33.3%
4 star 0%
3 star 0%
2 star 33.3%
1 star 33.3%
Gjorgi Var Nov 02, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I was looking for a condensed intro into OpenStack without having to scour the web for relevant information.With the help of this book I built a solid understanding of all the components that go into OpenStack technology and would recommend it to anyone needing to start out with OpenStack.
Amazon Verified review Amazon
Amazon Kunde Dec 20, 2016
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
Wer sich wirklich mit OpenStack beschäftigen will, ist gut beraten sich die offizielle Dokumentation durchzulesen. Die Inhalte im Buch werfen mehr Fragen auf als das sie sie beantworten
Amazon Verified review Amazon
Bill Stone Jan 27, 2017
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Poorly written. Clearly rushed into print with no editorial review. Sentences just stop mid sentence with no punctuation. Pretty verbose on some basics that anyone reading this should know. Seems like someone's publishing homework rough draft.
Amazon Verified review Amazon
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