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Chapter 24. Storing Monitoring Data

JBoss ON monitoring information reveals both current measurements and historical trends and averages. JBoss ON stores data in a kind of cascade, where raw data are aggregated and compressed on a schedule. This preserves the trends of data without inflating the size of the monitoring data. Data are handled like this:
  • Raw metrics are collected every few minutes and are aggregated in a rolling average in one-hour windows to produce minimum, average, and maximum values.
  • One-hour values are combined and averaged in six-hour periods.
  • Six-hour periods are combined and aggregated into 24-hour (1 day) windows.

24.1. Changing Storage Lengths for Monitoring Data
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24.1.1. Default Storage Lengths
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The raw measurements, one-hour periods, and six-hour periods are preserved in the JBoss ON database for a predefined lengths of time.
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Table 24.1. Storage Times for Data
Data Length of Time Configurable or Hardcoded SQL or NoSQL Database
Raw measurements 7 days Hardcoded NoSQL
1-hour aggregate 14 days Hardcoded NoSQL
6-hour aggregate 31 days Hardcoded NoSQL
24-hour aggregate 365 days Hardcoded NoSQL
Traits 365 days Configurable SQL
Availability data 365 days Configurable SQL
Events data 14 days Configurable SQL
Response-time metrics 31 days Configurable SQL

Note

The storage size of raw metrics can grow very quickly. Be careful when adjusting the storage time of raw metrics to account for the size of your database and the number and frequency of all metrics collected across your inventory.
If you need to store raw data for long periods, consider exporting the raw data from the database and archiving it separately.

Note

All collected metrics are stored in a NoSQL database, in a specified storage node. Additionl nodes can be added on other systems, in a cluster, as the number of resources or collected metrics increases.
All other monitoring data (as well as all other data stored and used by JBoss ON) are stored in the backend SQL database.
  1. In the System Configuration menu, select the Settings item.
    View larger image
  2. Scroll to the Data Manager Configuration Properties section.
  3. Change the storage times for the different types of monitoring data.
    View larger image
    There are four settings that relate directly to storing monitoring data:
    • Response time data for web servers and EJB resources. This is kept for one month (31 days) by default.
    • Events information, meaning all of the log files generated by the agent for the resource. The default storage time for event logs is two weeks.
    • Traits for resources. The default time is one year (365 days).
    • Availability information. The default time is one year (365 days).
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