Daemons
The Meridian service is composed of several daemon "sub-services" that each perform a specific set of tasks.
They can be enabled/disabled 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 |
Acknowledge daemon is responsible for alarm acknowledgment. |
Actiond |
Generates Java actions based on events received. |
Alarm daemon handles the alarm workflows. |
|
AsteriskGateway |
Communicates with an Asterisk server for VOIP notification. |
Bsmd |
Business Service Monitoring |
Collect daemon is responsible for collecting data from nodes. |
|
Correlator |
Associate multiple, related events. |
The Discovery daemon provides network discovery functions to scan once or regularly for nodes that should be added into the OpenNMS database. |
|
EnhancedLinkd |
Enhanced link daemon (Enlinkd) discovers connections between nodes using data generated by various link discovery protocols and accessible via SNMP. |
EventTranslator |
The Event Translator (ET) can transform and enhance the data from OpenNMS events that other daemons generate. |
Receives and writes event information. |
|
JettyServer |
The Jetty server provides the Meridian web user interface. |
KarafStartupMonitor |
|
Manager |
|
Notification daemon can send notifications to other systems based on event UEIs. |
|
PassiveStatusd |
|
PerspectivePoller |
|
Poller daemon is responsible for the service availability monitoring. |
|
Provisiond |
The provision daemon handles the node import and service detection processes. |
Queued |
|
Reportd |
Report daemon generates 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. |
Checks SNMP interface admin status. Separate from Pollerd’s SnmpMonitor. |
|
Statsd |
|
A syslog daemon that allows retrieval and parsing of syslog messages to generate events. |
|
The Telemetry daemon collects sensor data sent from nodes to Meridian. |
|
TestLoadLibraries |
|
The ticketing integration lets Horizon create trouble tickets in external systems. |
|
Enables reception of TL1 autonomous messages. |
|
Trap daemon provides an SNMP server that accepts SNMP traps that can be converted to events. |
|
Vacuumd |
Vacuum daemon takes care of cleaning processes in the PostgreSQL database. |