Bug ID 539784: HA daemon_heartbeat mcpd fails on load sys config

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.6.0, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0 HF3, 11.6.1, 11.5.4 HF2

Opened: Aug 13, 2015

Severity: 3-Major

Related Article: K17509


A particular stage of validation can take longer than the ha-daemon heartbeat interval, and while nothing is actually wrong, the system responds as if there is an unresponsive daemon, so the system restarts it.


MCPd restarts.


iRules must be present in the configuration that the system is loading.


On the BIG-IP system, run the command: tmsh mod sys daemon-ha mcpd heartbeat disabled.

Fix Information

Added additional heartbeats during validation, so HA daemon_heartbeat mcpd no longer fails on load sys config.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips