Daemons

The Meridian service is composed of several daemon "sub-services" that each perform a specific set of tasks. Enable and disable them via ${OPENNMS_HOME}/etc/service-configuration.xml.

See the system administration section for details on sending daemon reload commands.

List of daemons

Name	Description
Ackd	The acknowledge daemon is responsible for alarm acknowledgement.
Actiond	Generates Java actions based on received events.
Alarmd	The alarm daemon handles alarm workflows.
AsteriskGateway	Communicates with an Asterisk server for VOIP notification.
Bsmd	Processes updates of Business Service Monitoring availability.
Collectd	Collects data from nodes to persist performance metrics over time.
Correlator	Associates multiple related events.
Discovery	Provides network discovery functions to scan (either one time only or regularly) for nodes that should be added into the Meridian database.
EnLinkd	The enhanced link daemon discovers connections between nodes using data generated by various link discovery protocols and accessible via SNMP.
EventTranslator	The event translator can transform and enhance the data from Meridian events that other daemons generate.
Eventd	Receives and writes event information.
JettyServer	The Jetty server provides the Meridian web user interface.
Karaf	The Karaf runtime is the framework that maintains all the other daemons running within the Meridian system.
KarafStartupMonitor	Used in startup script to detect if Karaf started properly.
Notifd	The notification daemon sends notifications to other systems based on event UEIs.
PassiveStatusd	The Passive Status Keeper provides a mechanism to generate service outages based on events. This can be helpful for devices that cannot be directly polled to check service state.
PerspectivePoller	Handles Application Perspective Monitoring availability calculations.
Pollerd	The poller daemon is responsible for service availability monitoring.
Provisiond	The provision daemon handles the node import and service detection processes.
Queued	The queue daemon handles scheduling of tasks to run in the future.
Reportd	The report daemon generates and schedules reports.
Rtcd	The Real Time Console daemon handles uptime percentage calculations.
Scriptd	Scriptd allows the user to configure Bean Shell script to run in response to events.
SnmpPoller	The SNMP poller checks SNMP interface admin status. It is separate from pollerd’s SnmpMonitor.
Statsd	Generates statistical reports from node data.
Syslogd	A syslog daemon that allows retrieval and parsing of syslog messages to generate events.
Telemetryd	The Telemetry daemon collects sensor data sent from nodes to Meridian.
Ticketer	The ticketing integration daemon lets Meridian create trouble tickets in external systems.
Tl1d	The TL1 daemon enables reception of TL1 autonomous messages.
Trapd	The trap daemon provides an SNMP server that accepts SNMP traps that can be converted to events.
Vacuumd	The vacuum daemon executes daily cleanup tasks for the PostgreSQL database.

Name

Description

Ackd

The acknowledge daemon is responsible for alarm acknowledgement.

Actiond

Generates Java actions based on received events.

Alarmd

The alarm daemon handles alarm workflows.

AsteriskGateway

Communicates with an Asterisk server for VOIP notification.

Bsmd

Processes updates of Business Service Monitoring availability.

Collectd

Collects data from nodes to persist performance metrics over time.

Correlator

Associates multiple related events.

Discovery

Provides network discovery functions to scan (either one time only or regularly) for nodes that should be added into the Meridian database.

EnLinkd

The enhanced link daemon discovers connections between nodes using data generated by various link discovery protocols and accessible via SNMP.

EventTranslator

The event translator can transform and enhance the data from Meridian events that other daemons generate.

Eventd

Receives and writes event information.

JettyServer

The Jetty server provides the Meridian web user interface.

Karaf

The Karaf runtime is the framework that maintains all the other daemons running within the Meridian system.

KarafStartupMonitor

Used in startup script to detect if Karaf started properly.

Notifd

The notification daemon sends notifications to other systems based on event UEIs.

PassiveStatusd

The Passive Status Keeper provides a mechanism to generate service outages based on events. This can be helpful for devices that cannot be directly polled to check service state.

PerspectivePoller

Handles Application Perspective Monitoring availability calculations.

Pollerd

The poller daemon is responsible for service availability monitoring.

Provisiond

The provision daemon handles the node import and service detection processes.

Queued

The queue daemon handles scheduling of tasks to run in the future.

Reportd

The report daemon generates and schedules reports.

Rtcd

The Real Time Console daemon handles uptime percentage calculations.

Scriptd

Scriptd allows the user to configure Bean Shell script to run in response to events.

SnmpPoller

The SNMP poller checks SNMP interface admin status. It is separate from pollerd’s SnmpMonitor.

Statsd

Generates statistical reports from node data.

Syslogd

A syslog daemon that allows retrieval and parsing of syslog messages to generate events.

Telemetryd

The Telemetry daemon collects sensor data sent from nodes to Meridian.

Ticketer

The ticketing integration daemon lets Meridian create trouble tickets in external systems.

Tl1d

The TL1 daemon enables reception of TL1 autonomous messages.

Trapd

The trap daemon provides an SNMP server that accepts SNMP traps that can be converted to events.

Vacuumd

The vacuum daemon executes daily cleanup tasks for the PostgreSQL database.