Bug ID 945925: tmm could be stuck in a restart loop when remote logging to a fqdn destination is configured

Last Modified: Apr 11, 2024

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

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1

Fixed In:
16.1.0, 16.0.1.2, 15.1.4, 14.1.4.2

Opened: Sep 16, 2020

Severity: 2-Critical

Symptoms

- TMM is stuck restarting on a BIG-IP device or VE instance - Unable to process application traffic - /var/log/tmm logfile may contain the notice "MCP connection aborted, exiting"

Impact

- Unable to process application traffic since the required component cannot be brought up

Conditions

- Remote logging destination is configured (System-Logs-Configuration-Remote logging) and pointing to a FQDN hostname - FQDN hostname temporarily or permanently fails to resolve (e.g. DNS failure or congestion) - Reboot or upgrade of a BIG-IP instance or other conditions leading to tmm restart

Workaround

- Perform audit of DNS server(s), make sure FQDN destination resolves successfully, OR - Use IP address as remote logging destination, OR - Disable remote logging feature

Fix Information

no fix yet

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips