Book Image

OpenNebula 3 Cloud Computing

Book Image

OpenNebula 3 Cloud Computing

Overview of this book

OpenNebula is one of the most advanced and highly-scalable open source cloud computing toolkits. If you ever wanted to understand what Cloud Computing is and how to realize it, or if you need a handy way to manage your messy infrastructure in a simple and coherent manner, this is your way. OpenNebula 3 Cloud Computing guides you along the building and maintenance of your cloud infrastructure, providing real-world examples, step-by-step configuration and other critical information. The book keeps you a step ahead in dealing with the demanding nature of cloud computing and virtual infrastructure management using one of the most advanced cloud computing toolkitsñ OpenNebula. The book takes you from a basic knowledge of OpenNebula to expert understanding of the most advanced features.The book starts with a basic planning of hardware resources and presents the unique benefits of the supported hypervisors; you will go in deep with day-to-day management of virtual instances, infrastructure monitoring and integration with Public Clouds like Amazon EC2.With this book you will be able to get started with fast and cheap configuration recipes, but also go deeper for a correct integration with your existing infrastructure.You will deal with well-know virtualization technologies like Xen and VMware, but also with the promising KVM technology integrated in the Linux kernel. After the basic infrastructure set-up, you will learn how to create and manage virtual instance via both command-line and web interfaces, and how to monitor your existing resources.At the end, the book acquaints you with integrating your local infrastructure with external Cloud resources but also publishing your resources to others via common API interfaces.
Table of Contents (17 chapters)
OpenNebula 3 Cloud Computing
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
1
OpenNebula and Why it Matters?
Index

Summary


In this chapter, we have learned how to effectively monitor and manage host and VM failures for our infrastructure. We used the Ganglia monitoring system initially to gather statistics from all of our nodes and VMs, to extend it through third party or our own modules, and finally to visualize all the gathered data in the PHP web frontend.

When running a large OpenNebula deployment, we saw how it is possible to install and configure an alternative OpenNebula Information Manager that relies on Ganglia monitors instead of using the default Ruby probes executed through SSH.

Finally, we discovered how to configure a simple e-mail alerting script that could warn us if some particular Ganglia metric is out of our predefined ranges.

In the next chapter, we will see how it is possible with OpenNebula not to rely only on on-premises hosts and to use an external cloud provider to offload our resource to it.