Bug ID 501516: If a very large number of monitors is configured, bigd can run out of file descriptors when it is restarted.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.4.1, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.0 HF6, 11.5.3 HF2, 11.4.1 HF9

Opened: Jan 17, 2015

Severity: 3-Major

Related Article: K16656

Symptoms

When using a very large number of monitors, bigd may run out of file descriptors when it is restarted.

Impact

bigd cores and gets into a restart loop; monitors no longer work properly. The ltm log might contain error messages similar to the following: socket error: Too many open files.

Conditions

A system with a large number of monitors configured.

Workaround

Reduce the number of monitors on the system.

Fix Information

bigd no longer runs out of file descriptors during restart when using a very large number of monitors.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips