Installation guide

Chapter 7. Configuring Red Hat High Availability Manually
This chapter describes how to configure Red Hat High Availability Add-On software by directly
editing the cluster configuration file (/etc/cl uster/cl uster. co nf) and using command-line
tools. The chapter provides procedures about building a configuration file one section at a time,
starting with a sample file provided in the chapter. As an alternative to starting with a sample file
provided here, you could copy a skeleton configuration file from the cluster. co nf man page.
However, doing so would not necessarily align with information provided in subsequent procedures
in this chapter. There are other ways to create and configure a cluster configuration file; this chapter
provides procedures about building a configuration file one section at a time. Also, keep in mind that
this is just a starting point for developing a configuration file to suit your clustering needs.
This chapter consists of the following sections:
Section 7.1, “Configuration Tasks”
Section 7.2, “ Creating a Basic Cluster Configuration File”
Section 7.3, “ Configuring Fencing”
Section 7.4, “Configuring Failover Domains”
Section 7.5, “ Configuring HA Services”
Section 7.7, “Configuring Debug Options”
Section 7.6, “ Configuring Redundant Ring Protocol”
Section 7.9, “ Verifying a Configuration”
Important
Make sure that your deployment of High Availability Add-On meets your needs and can be
supported. Consult with an authorized Red Hat representative to verify your configuration
prior to deployment. In addition, allow time for a configuration burn-in period to test failure
modes.
Important
This chapter references commonly used cl uster. co nf elements and attributes. For a
comprehensive list and description of cl uster. co nf elements and attributes, refer to the
cluster schema at /usr/share/cl uster/cluster. rng , and the annotated schema at
/usr/share/d o c/cman-X. Y . ZZ/cl uster_co nf. html (for example
/usr/share/d o c/cman-3. 0 . 12/cluster_conf. html ).
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