Bug ID 1036169: VCMPD rsync server max connection limit: guest "Exit flags for PID 17299: 0x500".

Last Modified: Sep 23, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP vCMP(all modules)

Known Affected Versions:
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, 15.1.4

Opened: Jul 26, 2021
Severity: 3-Major

Symptoms

Guestagentd will log the message "Exit flags for PID <PID>:0x500" in guest ltm log, if vcmp guest to host rsync current active connection is more than 4

Impact

Guest LTM logs fill with "Exit flags for PID <PID>: 0x500".

Conditions

-- vCMP guest -- Rsync transfer frequency is 10 seconds between vCMP guest to vCMP host. -- net.ipv4.tcp_fin_timeout > 30 seconds.

Workaround

Update /etc/sysctl.conf on the VCMP host to include "net.ipv4.tcp_fin_timeout = 30" The guestagentd process on the VCMP guest pushes statistics to the VCMP host via RSYNC every 10 seconds opening a new TCP connection to RSYNC. * In a 30 second period, there is likely 3 TCP connections in TIME WAIT and 1 in flight. It won't exceed the max connection limit (4).

Fix Information

None

Behavior Change