Bug ID 803157: LTM log contains shutdown sequence logs after boot_marker as logs are buffered until BIG-IP reboots

Last Modified: Apr 17, 2024

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

Known Affected Versions:
14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,,

Opened: Jul 08, 2019

Severity: 3-Major


In reboot case, the BIG-IP system buffers the shutdown sequence log messages and writes them to disk once the syslog service starts during the boot process. The boot_marker message is written before shutdown messages sync to disk. This leads to out-of-sequence log messages, making it difficult to determine when the service stop occurred.


Log messages appear out of order. It is difficult to tell whether service stop happened as part of reboot, or any error during the subsequent boot process.


Reboot the BIG-IP system.



Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips