Bug ID 696914: Validation errors that occur during import/reimport can lock users out during large LTM configurations

Last Modified: Nov 22, 2021

Bug Tracker

Affected Product:  See more info
BIG-IQ Platform(all modules)

Known Affected Versions:
5.1.0, 5.2.0, 5.3.0

Fixed In:
5.4.0

Opened: Nov 30, 2017
Severity: 2-Critical

Symptoms

On some large LTM configurations, validation errors that occur during import/reimport can lock the user out of the system. The root cause is the large amount of memory required to back out the changes to the configuration, leading to an almost continuous execution of the Java Garbage Collector (GC), which stalls the system while trying to free memory.

Impact

System locks out users and becomes unusable for long period of times.

Conditions

Large LTM configurations, import or re-import a device triggering multiple validation errors.

Workaround

If this condition is encountered, restart BIG-IQ. Then, fix the BIG-IP configuration that's triggering the validation errors prior to attempting to import or reimport the BIG-IP device.

Fix Information

The transaction subsystem has been refactored to reduce the amount of memory needed to roll back.

Behavior Change