Bug ID 726319: 'The requested Pool Member ... already exists' logged when FQDN resolves to different IP addresses

Last Modified: Sep 17, 2019

Bug Tracker

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

Known Affected Versions:
14.0.0, 13.1.1, 13.1.0, 12.1.3.6, 12.1.3.5, 12.1.3.4, 12.1.3.3

Fixed In:
14.1.0, 14.0.0.3, 13.1.1.4

Opened: Jun 30, 2018
Severity: 3-Major

Symptoms

When FQDN nodes and pool members are used in LTM pools, a message similar to the following may be logged if the DNS server returns a different set of IP address records to resolve the FQDN name: err mcpd[20479]: 01020066:3: The requested Pool Member (****) already exists in partition ****.

Impact

These log messages are cosmetic and do not indicate any impact to traffic or BIG-IP operations.

Conditions

This message may be logged when the DNS server returns a different set of IP address records to resolve the FQDN name, and new ephemeral pool members are created corresponding to the new IP addresses. This may occur intermittently depending on timing conditions.

Workaround

None.

Fix Information

'The requested Pool Member ... already exists' messages are no longer logged occasionally when an FQDN pool member name resolves to different IP addresses.

Behavior Change