CentOS High Availability

Leverage the power of high availability clusters on CentOS Linux, the enterprise-class, open source operating system

CentOS High Availability

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Mitja Resman

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Leverage the power of high availability clusters on CentOS Linux, the enterprise-class, open source operating system
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Book Details

ISBN 139781785282485
Paperback174 pages

Book Description

The high performance and stability of CentOS Linux are the key factors that make CentOS Linux the right Linux distribution to build high availability solutions on. This book introduces you to high availability before briefly walking you through the cluster stack and its layers. The book is then divided into two parts, part A and part B, based on CentOS versions 6 and 7 respectively. Each part begins with the installation and configuration of the Corosync cluster messaging software with CMAN or with the Pacemaker cluster resource management software.

You will also be introduced to cluster service configuration and cluster service management before you configure fencing or STONITH on CentOS 6 and CentOS 7. By the end of this book, you will have the skills required to independently design, implement, and maintain a CentOS high availability multinode cluster environment.

Table of Contents

Chapter 1: Getting Started with High Availability
What is high availability?
System design
Computer clusters
High-availability solutions
Summary
Chapter 2: Meet the Cluster Stack on CentOS
Cluster stack software
The cluster communication layer
The cluster resource management layer
A theoretical cluster service example
Cluster stack on CentOS Linux
Preparing for cluster stack software installation
Summary
Chapter 3: Cluster Stack Software on CentOS 6
Cluster infrastructure
Cluster operating system preparation
Installing and configuring Corosync
Installing and configuring CMAN
Summary
Chapter 4: Resource Manager on CentOS 6
Working with RGManager
Configuring failover domains
Adding cluster resources and services
Managing cluster services
Removing cluster resources and services
Summary
Chapter 5: Playing with Cluster Nodes on CentOS 6
Adding a new cluster node
Removing a cluster node
Summary
Chapter 6: Fencing on CentOS 6
Fencing
Fencing configuration
IPMI management board fencing
HP iLO management board fencing
Fencing test
Summary
Chapter 7: Testing Failover on CentOS 6
Hardware failure
Network failure
Summary
Chapter 8: Two-node Cluster Considerations on CentOS 6
Quorum in a two-node cluster
Two-node cluster configuration
Quorum disk
Summary
Chapter 9: Cluster Stack Software on CentOS 7
Cluster infrastructure
Installing and configuring Corosync
Summary
Chapter 10: Resource Manager on CentOS 7
Working with pcs
Adding cluster resources, constraints, and resource groups
Managing resources
Removing cluster constraints, resource groups, and resources
Summary
Chapter 11: Playing with Cluster Nodes on CentOS 7
Adding a new cluster node
Cluster node standby mode
Removing a cluster node
Summary
Chapter 12: STONITH on CentOS 7
Fencing
Configuring fence devices
IPMI management board fencing
HP iLO management board fencing
Fence test
Summary
Chapter 13: Testing Failover on CentOS 7
Hardware failure
Network failure
Summary
Chapter 14: Two-node Cluster Considerations on CentOS 7
Quorum in a two-node cluster
Two-node cluster configuration
Summary

What You Will Learn

  • Prepare the CentOS 6 and CentOS 7 operating systems for cluster software installation
  • Install, configure, and test cluster stacks on CentOS 6 (Corosync, CMAN, and RGManager) and CentOS 7 (Corosync and Pacemaker)
  • Configure failover domains, cluster resources, cluster services, and cluster resource groups
  • Start, stop, add, and remove cluster nodes from a cluster on CentOS 6 and CentOS 7
  • Place a cluster on standby mode to perform maintenance work on the cluster node
  • Configure fencing on CentOS 6 and STONITH on CentOS 7
  • Successfully test cluster failovers

Authors

Table of Contents

Chapter 1: Getting Started with High Availability
What is high availability?
System design
Computer clusters
High-availability solutions
Summary
Chapter 2: Meet the Cluster Stack on CentOS
Cluster stack software
The cluster communication layer
The cluster resource management layer
A theoretical cluster service example
Cluster stack on CentOS Linux
Preparing for cluster stack software installation
Summary
Chapter 3: Cluster Stack Software on CentOS 6
Cluster infrastructure
Cluster operating system preparation
Installing and configuring Corosync
Installing and configuring CMAN
Summary
Chapter 4: Resource Manager on CentOS 6
Working with RGManager
Configuring failover domains
Adding cluster resources and services
Managing cluster services
Removing cluster resources and services
Summary
Chapter 5: Playing with Cluster Nodes on CentOS 6
Adding a new cluster node
Removing a cluster node
Summary
Chapter 6: Fencing on CentOS 6
Fencing
Fencing configuration
IPMI management board fencing
HP iLO management board fencing
Fencing test
Summary
Chapter 7: Testing Failover on CentOS 6
Hardware failure
Network failure
Summary
Chapter 8: Two-node Cluster Considerations on CentOS 6
Quorum in a two-node cluster
Two-node cluster configuration
Quorum disk
Summary
Chapter 9: Cluster Stack Software on CentOS 7
Cluster infrastructure
Installing and configuring Corosync
Summary
Chapter 10: Resource Manager on CentOS 7
Working with pcs
Adding cluster resources, constraints, and resource groups
Managing resources
Removing cluster constraints, resource groups, and resources
Summary
Chapter 11: Playing with Cluster Nodes on CentOS 7
Adding a new cluster node
Cluster node standby mode
Removing a cluster node
Summary
Chapter 12: STONITH on CentOS 7
Fencing
Configuring fence devices
IPMI management board fencing
HP iLO management board fencing
Fence test
Summary
Chapter 13: Testing Failover on CentOS 7
Hardware failure
Network failure
Summary
Chapter 14: Two-node Cluster Considerations on CentOS 7
Quorum in a two-node cluster
Two-node cluster configuration
Summary

Book Details

ISBN 139781785282485
Paperback174 pages
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