HP OpenView Operations Administrator's Reference - filibeto.org

About OVO Processes
About Managed Node Processes
382
opcecaas Annotation server that runs on a managed node and
obtains data from outside the ECS engine for use
within correlation circuits. This process connects to the
opceca using the standard annotate API. It receives
annotate requests for launching external programs and
returns the output to the circuit.
opcle Logfile encapsulator that scans one or more application
or system-logfiles (including the Windows NT
Eventlog) for messages or patterns specified by the
OVO administrator. The logfile encapsulator forwards
the scanned and filtered messages to the message
agent.
opcmona Monitor agent that monitors the following:
❏ System parameters (for example, CPU load, disk
utilization, kernel parameters)
❏ SNMP MIBs
❏ Other parameters, if specified
The monitor agent checks the values it finds against
predefined thresholds. If a threshold is exceeded, a
message is generated and forwarded to the message
agent. The polling interval of the monitored object can
be configured by the OVO administrator. In addition,
the opcmon(1) command and opcmon(3) API can be
used (asynchronously) to feed the monitor agent with
the current threshold values.
The monitor agent does not immediately begin
monitoring when agents are started. Instead, it waits
one polling interval, and only then executes the
monitor script for the first time. Typically, polling
intervals are 30 seconds to 5 minutes.
Chapter 10