HP-UX Event ManagerAdministrator's Guide

Introduction
Overview
Chapter 120
The get server process, evmget_srv, is a transient (demand) process that
executes event retrieval scripts for the various event channels. The evmd
daemon runs an instance of evmget_srv whenever a user runs the
evmget command.
Entities on the left side of the model create posting connections to the
daemon to post events. After it receives events from the posters, the
daemon merges them with corresponding event templates from its
template database, and distributes them to its subscribing clients.
The following components are on the right side of the model:
•The evmwatch and other application programs that need to receive
event information as it happens create subscribing connections to the
daemon and pass filter strings to it to specify their event
subscriptions.
•The evmget command, which a user can run to retrieve historical
event information from log files, creates a service connection and
passes a filter string to specify the set of events to be retrieved. The
daemon then runs an instance of the get server to handle the
request.
• The e-mail and pager actions are examples of forwarding commands,
which the logger may execute in response to the occurrence of certain
events.
Event Manager Command Line Utilities
Event Manager provides a number of command-line utilities both for
administering the system itself and for use in posting or obtaining
events. Table 1-1 describes the general user commands. For more
information about the commands to monitor and review event activity,
see “Using Event Manager” on page 31.
Table 1-1 Event Manager Command-Line Utilities
Command Description
evmget Retrieves stored events from a configured
set of log files and event channels, using
channel-specific retrieval functions