OVNM 5.3 - Operations Agent for NonStop Concepts Guide

About OVNM Components 20
3-3 Customizing EMS Alert Messages
The standard adapter forwards the required information from the EMS event and sends it to the HP Operations
platform. However, sometimes the need arises to alter the contents of the message. The most common
requirements are to alter the Event Text or the Severity settings of the message. The user can also set the HP
Operations Service View that will be impacted by the alert. This enables you to classify the alerts from a
customized business perspective.
OVNM provides additional slot (variables) values that are not available as part of the HP NonStop subsystems
events. These slot values help you classify the events based on the impacted service area. The user can either
pass only the OVNM defined events, or pass all the events with customized values using OCC.
3-4 OVNM Server Components
OVMON is the primary server component on the OVNM. It monitors the entire system objects and resources. It
reports object state changes in the EMS Log. The corresponding events are then forwarded to HP Operations.
OVMON builds a hierarchical map of NonStop resources from database objects created by the Discovery
process (OVCFG). The mapping information is then forwarded to the HP Operations consoles via the MAP
Agent.
The OVOCC Server component discovers the objects configured through OCC and builds the OVNM Objects
Configuration database for monitored objects.
OV TACL Server is responsible for executing the action requests from the HP Operations Message Browser and
the NNM Alarm Browser Consoles and delivering the responses back to the Consoles through the NSCMD
Agent. The OV TACL server allows the customer to execute any TACL based command from the HP Operations
server to the HP NonStop server.
The Event Server or EMON collects the filtered events from the event distributor and forwards them to the HP
Operations Event Browser and NNM Alarm Browser Consoles. This intelligent agent is setup to detect event
bursts and event duplication. Event suppression is applied to reduce the amount of unnecessary traffic to the HP
Operations event browsers.