Managing Serviceguard 13th Edition, February 2007

Planning and Documenting an HA Cluster
Package Configuration Planning
Chapter 4 169
NOTE The Disk Group (DG) and Mount Point (MP) multi-node packages
(SG-CFS-DG_ID# and SG-CFS-MP_ID#) do not monitor the health of
the disk group and mount point. They check that the application
packages that depend on them have access to the disk groups and
mount points. If the dependent application package loses access and
cannot read and write to the disk, it will fail, but that will not cause
the DG or MP multi-node package to fail.
4. You create the CFS package, SG-CFS-pkg, with the cfscluster
command. It is a system multi-node package that regulates the
volumes used by CVM 4.1. System multi-node packages cannot be
dependent on any other package.
Parameters for Configuring EMS Resources
Serviceguard provides a set of parameters for configuring EMS (Event
Monitoring Service) resources. These are RESOURCE_NAME,
RESOURCE_POLLING_INTERVAL, RESOURCE_START, and
RESOURCE_UP_VALUE. Enter these parameters to the package
configuration file for each resource the package will be dependent on.
The DEFERRED_RESOURCE_NAME is added to the package control script for
any resource that has a RESOURCE_START setting of DEFERRED.
The RESOURCE_START option is used to determine when Serviceguard
should start up resource monitoring for EMS resources. The
RESOURCE_START option can be set to either AUTOMATIC or DEFERRED.
If AUTOMATIC is specified, Serviceguard will start up resource monitoring
for these resources automatically when the Serviceguard cluster daemon
starts up on the node. If resources are configured AUTOMATIC, you do not
need to define DEFERRED_RESOURCE_NAME in the package control script.
If DEFERRED is selected, Serviceguard will not attempt to start resource
monitoring for these DEFERRED resources during node start up. However,
these DEFERRED resources must be specified in the package control script,
setting the DEFERRED_RESOURCE_NAME parameter, so that the DEFERRED
resources will be started up from the package control script during the
package run time.
The following is an example of how to configure DEFERRED and
AUTOMATIC resources. In the package configuration file, specify resources
as follows: