Linux Enterprise Cluster: Build a Highly Available Cluster with Commodity Hardware and Free Software
The last chapter introduced the three configuration files used to control the operation of Heartbeat: ha.cf, haresources, and authkeys. The recipe in this chapter describes how to use these files on two servers, or nodes, so that Heartbeat can deploy resources in a high-availability configuration.
In a normal Heartbeat configuration, these files will be the same on the primary and the backup server (complex and subtle problems can be introduced into your high-availability configuration if they are not). The recipe in this chapter is a lab exercise that demonstrates how the Heartbeat system starts resources and fails them over to a backup server.
Recipe
List of ingredients:
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2 servers running Linux (each with two network interface cards and cables)
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1 crossover cable (or standard network cables and a mini hub) and/or a serial cable
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1 copy of the Heartbeat software package (from http://www.linux-ha.org/download or the CD-ROM)