Configuration

The Monitor-App service uses an Apache Kafka message queue to collect syslog messages sent by the sources that it monitors. Syslog messages in this queue are processed, indexed, and displayed in visualizations in HCM.

Messages are automatically deleted from the queue if they grow too old or the queue too large.

You can configure these settings for the queue:

• Retention days: The maximum number of days that a message can remain in the queue. The service automatically removes messages older than this limit. The default is 1 day.

• Max queue size: The maximum size that the queue can grow to, in megabytes. When the queue reaches this size, old messages are automatically removed. The default is -1 (no size limit).

Notes: Messages deleted from the queue might never have been displayed in HCM.

• monitorAccessLogIndex retention days: The amount of time to retain the indexed metrics in monitorAccessLogIndex for generating visualizations. That is, the Monitor App cannot display information about the systems it monitors if that information is older than this limit. The default is 30 days.
• monitorMetricsIndex retention days: The amount of time to retain the indexed metrics in monitorMetricsIndex for generating visualizations. That is, the Monitor App cannot display information about the systems it monitors if that information is older than this limit. The default is 365 days.
• monitorEventsIndex retention days: The amount of time to retain the indexed metrics in monitorEventsIndex for generating visualizations. That is, the Monitor App cannot display information about the systems it monitors if that information is older than this limit. The default is 365 days.