Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Guia de Instalação descarregar pdf (Página 125)

<apache config_file="conf/httpd.conf" name="example_server"

server_root="/etc/httpd" shutdown_wait="0"/>

</resources>

</rm>

</cluster>

7.5.2. Adding a Clust er Service t o t he Clust er

To add a cluster service to the cluster, follow the steps in this section.

Note

The examples provided in this section show a cluster service in which all of the resources are

at the same level. For information on defining a service in which there is a dependency chain

in a resource hierarchy, as well as the rules that govern the behavior of parent and child

resources, see Appendix C, HA Resource Behavior.

1. Open /etc/cl uster/cl uster.co nf at any node in the cluster.

2. Add a service section within the rm element for each service. For example:

<rm>

<service autostart="1" domain="" exclusive="0" name=""

recovery="restart">

</service>

</rm>

3. Configure the following parameters (attributes) in the service element:

autostart — Specifies whether to autostart the service when the cluster starts. Use '1' to

enable and '0' to disable; the default is enabled.

d o mai n — Specifies a failover domain (if required).

exclusi ve — Specifies a policy wherein the service only runs on nodes that have no

other services running on them.

recovery — Specifies a recovery policy for the service. The options are to relocate,

restart, disable, or restart-disable the service.

4. Depending on the type of resources you want to use, populate the service with global or

service-specific resources

For example, here is an Apache service that uses global resources:

<rm>

<fs name="web_fs" device="/dev/sdd2"

mountpoint="/var/www" fstype="ext3"/>

Fencin g Configurat ion Examples

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Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Guia de Instalação Página 125