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OpenStack Essentials

OpenStack Essentials

By : Dan Radez
4.2 (14)
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OpenStack Essentials

OpenStack Essentials

4.2 (14)
By: Dan Radez

Overview of this book

If you need to get started with OpenStack or want to learn more, then this book is your perfect companion. If you're comfortable with the Linux command line, you'll gain confidence in using OpenStack.
Table of Contents (15 chapters)
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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
1. Architecture and Component Overview
1. Architecture and Component Overview
OpenStack architecture
Dashboard
Keystone
Glance
Neutron
Nova
Cinder
Swift
Ceilometer
Heat
Summary
2
2. RDO Installation
2. RDO Installation
Installing RDO using Packstack
Summary
3
3. Identity Management
3. Identity Management
Services and endpoints
Interacting with Keystone in the dashboard
Endpoints in the dashboard
Summary
4
4. Image Management
4. Image Management
Glance as a registry of images
Using the web interface
Building an image
Summary
5
5. Network Management
5. Network Management
Networking and Neutron
Open vSwitch configuration
Creating a network
Web interface management
External network access
Web interface external network setup
Summary
6
6. Instance Management
6. Instance Management
Managing flavors
Managing key pairs
Launching an instance
Managing floating IP addresses
Managing security groups
Communicating with the instance
Launching an instance using the web interface
Summary
7
7. Block Storage
7. Block Storage
Use case
Creating and using block storage
Attaching the block storage to an instance
Managing Cinder volumes in the web interface
Backing storage
Summary
8
8. Object Storage
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8. Object Storage
Use case
Architecture of a Swift cluster
Creating and using object storage
Object file management in the web interface
Using object storage on an instance
Ring files
Summary
9
9. Telemetry
9. Telemetry
Understanding the data store
Definitions of Ceilometer's configuration terms
Graphing the data
Summary
10
10. Orchestration
10. Orchestration
About orchestration
Writing templates
Launching a stack
Autoscaling instances with Heat
LBaaS setup
Web interface
Summary
11
11. Scaling Horizontally
11. Scaling Horizontally
Scaling compute nodes
Installing more control and networking
Scaling control and network services
Load-balancing keystone
Glance load balancing
Scaling other services
High availability
Highly available database and message bus
Summary
12
12. Monitoring
12. Monitoring
Monitoring defined
Installing Nagios
Monitoring methods
Non-OpenStack service checks
Monitoring control services
Monitoring network services
Monitoring compute services
Summary
13
13. Troubleshooting
13. Troubleshooting
The debug command line option
Tail the server logs
Troubleshooting Keystone and authentication
Troubleshooting Glance image management
Troubleshooting Neutron networking
Troubleshooting Nova launching instances
Troubleshooting post-boot metadata
Troubleshooting console access
Troubleshooting Cinder block storage
Troubleshooting Swift object storage
Troubleshooting Ceilometer Telemetry
Troubleshooting Heat orchestration
Getting more help
Summary
14
Index
Index

Using object storage on an instance

Now that we have seen how to get files in and out of Swift, let's look at installing the necessary client libraries on an instance to be able to interact with object storage on the instance. We will need to have the Swift client installed so that the same Swift commands that were run on the control node's command line can be executed on an instance. In this cluster, Swift is using Keystone for authentication. Swift can also use other authentication. It has a built-in authentication system and can also be used with other common authentication systems. Since Swift is configured to use Keystone for authentication, the Keystone client will also need to be installed. Let's install those clients now:

instance# yum install -y openstack-swiftclient openstack-keystoneclient

Once those are installed, you will need to create a keystonerc file to source. Here's how we go about this:

instance# cat > ~/keystonerc_danradez << EOF
export OS_USERNAME=danradez...

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