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CentOS High Availability

You're reading from   CentOS High Availability Leverage the power of high availability clusters on CentOS Linux, the enterprise-class, open source operating system

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Product type Paperback
Published in Apr 2015
Publisher
ISBN-13 9781785282485
Length 174 pages
Edition 1st Edition
Tools
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Toc

Table of Contents (16) Chapters Close

Preface 1. Getting Started with High Availability FREE CHAPTER 2. Meet the Cluster Stack on CentOS 3. Cluster Stack Software on CentOS 6 4. Resource Manager on CentOS 6 5. Playing with Cluster Nodes on CentOS 6 6. Fencing on CentOS 6 7. Testing Failover on CentOS 6 8. Two-node Cluster Considerations on CentOS 6 9. Cluster Stack Software on CentOS 7 10. Resource Manager on CentOS 7 11. Playing with Cluster Nodes on CentOS 7 12. STONITH on CentOS 7 13. Testing Failover on CentOS 7 14. Two-node Cluster Considerations on CentOS 7 Index

Cluster stack software

A computer cluster is a group of computers working together as one unit. A computer cluster can, in many ways, be viewed as a single system, even though it is built from many computers. All cluster members are closely connected, each one of them being prepared to take any actions needed at any time. This sounds simple but, actually, it requires complex software products and solutions for a computer cluster to operate in this way. A cluster software stack makes sure that all the magic happens. It introduces a bundle of combined software products to form a complete high-availability computer cluster solution. It is a software stack and its goal is to provide a highly available cluster service.

Generally speaking, the cluster software stack must provide two significant features:

  • Cluster communication: This is located at the bottom layer of the cluster stack due to its close relation to the transport layer. Communication between cluster members is only possible via the...
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