HPMA Audit Message Reference
Overview of Auditing
As services in the grid perform various activities and process events, audit messages are generated to retain a record of grid activity. These messages are processed by the Audit Management System (AMS) service and stored in the form of text log files. This document provides information on the structure and content of the text log files to enable you to read and analyze the audit trail of grid activity.
Audit Message Flow
Audit messages are generated internally by each grid service. All system services generate audit messages during normal system opera- tion. These messages are sent to the connected AMS services for processing and storage.
Some grid services can be designated as audit message relay services. They act as collection points to reduce the need for every service to send its audit messages to all connected AMS services. Notice in Figure 1 that each relay service must send messages to all AMS desti- nations, whereas services can send messages to just one relay service.
Figure 1: Audit Message Flow
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