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Foglight Experience Monitor 5.8.1 - Installation and Administration Guide

Installing and configuring Multi-appliance clusters Configuring the appliance Specifying monitored web traffic Transforming monitored URLs Managing applications Foglight components and the appliance Using the console program Troubleshooting the appliance Appendix: Third party software Appendix: Dell PowerEdge system appliance

Resetting the configuration

If you are moving an appliance to a different location or want to monitor an entirely different set of applications, you may want to reinitialize the configuration database before proceeding.

1
Click the Reset Configuration link at the bottom of the Database page.
2
Click OK to proceed with the reinitialization.

Exporting a configuration

If you want to transfer an existing database configuration from one appliance into another appliance, you can use the Export Configuration option. Clicking Export Configuration starts the process whereby all of the database configuration settings are saved to a ZIP file. Save the ZIP file to a location where it can be accessed by the other appliance.

1
Click the Export Configuration link at the bottom of the Database page to open the Database > Export Configuration page.
3
Click Submit to save the contents of the ZIP file to a location and complete the export process.

Importing a configuration

For various reasons you might want to use an existing database configuration from another appliance. To import the database configuration, the appliance from which you want to import the file must have access to the location where the ZIP file was saved.

1
Click the Import Configuration link at the bottom of the Database page to open the Database > Import Configuration page.

Setting database retention

The appliance incorporates self-correcting mechanisms to ensure that the amount of disk space consumed by each metric database does not consume all of the available space on the database partition.

The database retention page allows administrators to customize the target retention time for each time period. To view existing database retention settings, click the Retention link at the bottom of the Database page.

There are six types of retention time periods that are configurable by the administrator. The discrete retention type is composed of separate distinct data points made up of the following categories: Alarms, User Sessions, SOAP Faults, and HTTP Faults. The 5-minute interval, hourly, day, week, month periods store data based on target time set by the administrator. For more information, see the information about Target in the following table.

Each time period type displays the following information.

Target Minimum

Indicates the amount of data (in days) that is stored when the system fills the database partition. Once filled, the system removes older data to make room for newer data.

Target Maximum

This value reflect the amount of data stored, under optimal conditions, when the database partition is not filled to capacity.

Current

The number of days that data for the time period is currently being retained.

Target

The number of days that the system attempts to retain data for each time period.

 

Foglight Experience Monitor Administrators can adjust the value upward or downward if a particular time period is considered more important than another. The system attempts to retain the amount of data suggested by the target, but may not always be able to achieve that goal depending on the amount of data that is being collected for each time period.

 

Click OK to set the target retention.

When using the retention periods, data that is older than the current retention interval is purged over time–it is not purged immediately. For most sites, these retention intervals can be achieved without filling up the database partition. However, when disk space consumption on this partition exceeds 88% capacity, the system purges data for all these categories. This results in the following retention periods.

Discrete

24 hours

Real-Time

24 hours

Hour

30 hours

Day

75 days

Week

8 weeks

Month

8 months

If the disk space consumption on this partition exceeds 88% capacity, the data in the Discrete time period is rotated until disk consumption is less than 88% or the Discrete period contains its minimum of 24 hours worth of data. In cases where the disk partition remains in excess of 88% capacity, and the Discrete time period holds less than 24 hours worth of data, the data in the Real-Time time period is rotated until it reaches 24 hours worth of data. If the partition remains in excess of 88% capacity, and the Real-Time time period holds less than 24 hours worth of data, hourly data is rotated to 30 hours worth of data. This process continues using the day, week and month time periods or until such time as the database partition is reduced to under 88% capacity.

To reduce the load on the database you can configure the following items:

On the Configure > URLs > Advanced Options page you can choose to ignore response codes that may be filling up your HTTP Fault log.
On the Configure > Monitoring > User Sessions page, you can also configure the system not to record every user session. For more information, see Identifying user sessions.
On the Configure > Reporting > Categories page, reduce the amount of data being stored in the database by turning off particular categories that you do not find useful. For more information, see Metric categories.
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