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9.4. Configuring Events Monitoring

Event monitoring is essentially a log filter. The resource itself maintains a log file; JBoss ON checks any specified log file for messages or events that occur. JBoss ON can check for messages in a stream or only for messages that match a certain pattern or severity.
JBoss ON can issue alerts based on log messages and even take action automatically in response to events, like creating a new managed resource or restarting a server.
Since events are unpredictable, based on the real operations of the resource rather than a schedule, it is a big advantage to administrators to be able to filter messages and respond dynamically.

Note

Events configuration is described more in the events chapter of "Setting up Monitoring, Alerts, and Operations".
Three JBoss EAP 6 server types support events, and they are preconfigured with an event log in the standard location:
  • Host controllers, in domain/log/host-controller.log
  • Managed servers, in domain/servers/server-three/log/server.log
  • Standalone servers, in standalone/log/server.log
While the event log is already configured, it is not enabled by default. The event log must be enabled before events are collected by the JBoss ON agent. Additional settings, such as specific strings to look for in log messages, can also be set.
  1. Click the Inventory tab in the top menu.
  2. Click the Servers - Top Level Imports item, and select the JBoss EAP 6 resource.
  3. Navigate to the appropriate EAP 6 resource.
  4. Click the Inventory tab on the resource entry.
  5. Select the Connection Settings subtab.
  6. Click green plus icon under the Events Log section.
  7. Enable the event entry.
    Optionally, set the date format, string filters to include messages, or the severity of the messages to include.
When event monitoring is enabled, the matching log messages are displayed in the Events tab for the resource.
JBoss EAP 6 Event Logging

Figure 9.7. JBoss EAP 6 Event Logging

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