Administration Guide
- About This Guide
- I Installation and Setup
- II Configuration and Administration
- 4 Configuration and Administration Basics
- 5 Configuring and Managing Cluster Resources (Web Interface)
- 6 Configuring and Managing Cluster Resources (Command Line)
- 7 Adding or Modifying Resource Agents
- 8 Fencing and STONITH
- 9 Access Control Lists
- 10 Network Device Bonding
- 11 Load Balancing
- 12 GEO Clusters (Multi-Site Clusters)
- III Storage and Data Replication
- IV Appendix
- Terminology
- F GNU Licenses
Part I Installation and Setup
- 1 Product Overview
SUSE® Linux Enterprise High Availability Extension is an integrated suite of open source clustering technologies that enables you to implement highly available physical and virtual Linux clusters, and to eliminate single points of failure. It ensures the high availability and manageability of critical network resources including data, applications, and services. Thus, it helps you maintain business continuity, protect data integrity, and reduce unplanned downtime for your mission-critical Linux workloads.
It ships with essential monitoring, messaging, and cluster resource management functionality (supporting failover, failback, and migration (load balancing) of individually managed cluster resources).
This chapter introduces the main product features and benefits of the High Availability Extension. Inside you will find several example clusters and learn about the components making up a cluster. The last section provides an overview of the architecture, describing the individual architecture layers and processes within the cluster.
For explanations of some common terms used in the context of High Availability clusters, refer to Terminology.
- 2 System Requirements and Recommendations
The following section informs you about system requirements, and some prerequisites for SUSE® Linux Enterprise High Availability Extension. It also includes recommendations for cluster setup.
- 3 Installation and Basic Setup
This chapter describes how to install and set up SUSE® Linux Enterprise High Availability Extension 12 from scratch. Choose between an automatic setup which allows you to have a cluster up and running within a few minutes (with the choice to adjust any options later on) or decide for a manual setup, allowing you to set your individual options right at the beginning.
Refer to chapter Appendix D, Upgrading Your Cluster and Updating Software Packages if you want to migrate an existing cluster that runs an older version of SUSE Linux Enterprise High Availability Extension or if you want to update any software packages on nodes that are part of a running cluster.