Writing Monitors for the Event Monitoring Service (December 1999)

Chapter 1 17
Understanding the Event Monitoring Service
Client and Target Applications
Client and Target Applications
This section describes some of the client and target application options
and processes. Target applications can be written using the EMS API.
EMS with ServiceGuard
ServiceGuard can be configured with EMS to monitor the health of
selected resources, such as disks. Based on the status of the resources,
ServiceGuard can decide to fail packages over. When working with EMS,
ServiceGuard acts as both the client and target application. EMS works
with both the MC/ServiceGuard and ServiceGuard OPS Edition.
Configure EMS requests for use with ServiceGuard packages either:
• through the Package Configuration in the Cluster area of SAM
• by editing the package configuration ASCII file
In addition, is it recommended that you also create requests through
EMS to:
• enable a redundant notification system
• monitor events that affect high availability
• be alerted to the cause of a package failover
ServiceGuard may already be configured to monitor the health of nodes,
services, and subnets, and to make failover decisions based on the status
of these resources. Using EMS with ServiceGuard adds to the set of
failures or events that trigger failover and affect availability.
EMS GUI Client Application
Use the EMS GUI, found in the Resource Management area of SAM, to
create monitoring requests specifying resources and targets. The EMS
GUI starts from the graphical version of SAM. Click through and select
from the various screens to define your monitoring request. The options
include:
1. Select resources to be monitored.
The full path of a resource includes the resource class hierarchy and