Installation guide

<fence>
<method name="APC">
<device name="apc" port="3"/>
</method>
</fence>
</clusternode>
</clusternodes>
<fencedevices>
<fencedevice agent="fence_apc" ipaddr="apc_ip_example"
login="login_example" name="apc" passwd="password_example"/>
</fencedevices>
<rm>
<failoverdomains>
<failoverdomain name="example_pri" nofailback="0"
ordered="1" restricted="0">
<failoverdomainnode name="node-01.example.com"
priority="1"/>
<failoverdomainnode name="node-02.example.com"
priority="2"/>
<failoverdomainnode name="node-03.example.com"
priority="3"/>
</failoverdomain>
</failoverdomains>
</rm>
</cluster>
The fai l o verd o mai ns section contains a fail o verd o mai n section for each failover domain
in the cluster. This example has one failover domain. In the fail o verd o mai n line, the name
(name) is specified as exampl e_pri. In addition, it specifies no failback (fai l back= "0 "), that
failover is ordered (o rd ered = "1"), and that the failover domain is unrestricted
(restri cted = "0 ").
7.5. Configuring HA Services
Configuring HA (High Availability) services consists of configuring resources and assigning them to
services.
The following sections describe how to edit /etc/cl uster/cl uster.co nf to add resources and
services.
Section 7.5.1, “ Adding Cluster Resources”
Section 7.5.2, “ Adding a Cluster Service to the Cluster”
Important
There can be a wide range of configurations possible with High Availability resources and
services. For a better understanding about resource parameters and resource behavior, refer
to Appendix B, HA Resource Parameters and Appendix C, HA Resource Behavior. For optimal
performance and to ensure that your configuration can be supported, contact an authorized
Red Hat support representative.
Red Hat Ent erprise Linux 6 Clust er Administ rat ion
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