Bug ID 747907: Persistence records leak while the high availability (HA) mirror connection is down

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4

Fixed In:
15.1.0, 14.1.0.6, 13.1.3.2

Opened: Oct 25, 2018

Severity: 3-Major

Symptoms

Memory might leak on the active unit while the high availability (HA) mirror connection is down.

Impact

Memory leak until the high availability (HA) mirror connection is up. Once mirror connection is up, the system releases the memory. High CPU may also be observed, and may be more obvious than increased memory use.

Conditions

-- The persistence configured that requires its state to be stored stored on the BIG-IP system. -- Mirroring is configured on the persistence profile or the virtual server. -- Mirror connection is down, for example, next active is down/offline/unavailable.

Workaround

-- Disable persistence while high availability (HA) mirror connection is down (e.g., performing maintenance). -- Disable session mirroring for iRules. -- Use persistence that does not requires its state to be stored on the BIG-IP system. -- Restore high availability (HA) connection.

Fix Information

Persistence records no longer leak memory while the high availability (HA) mirror connection is down.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips