Forum Discussion

Cirrus

Jan 09, 2023

GTM marking data virtual server down after establishing sync group

Hi We have two GTM-Virtual in sync group in two different data centers If we disable the group sync, all virtual servers will be marked UP But if we establish sync between them, they'll be marked ...

security

Abed_AL-R

Cirrostratus

Jan 09, 2023

The prober pool in configured.

The data center and virtual servers is marked UP if I turn off the synchronize between the two GTMs. The problem happens only if I turn on the synchronize.

Nikoolayy1
MVP
Jan 10, 2023
Did you enable debug to see in /var/log/gtm which GTM/DNS system is usually selected for monitoring when the Sync group enabled? If the prober pool members are used is a good question.

I suggest also uploading qkviews and checking the bug tracker https://support.f5.com/csp/bug-tracker for ''big3d: timed out'' as I found https://cdn.f5.com/product/bugtracker/ID1108237.html .

Also big3d should be the same on all devices as this can cause issues and all GTM should have run the gtm_add script to be part of a sync group.

K13312: Overview of the BIG-IP DNS big3d_install, bigip_add, and gtm_add utilities (11.x - 16.x)

https://support.f5.com/csp/article/K13312

K13734: BIG-IP DNS synchronization group requirements

https://support.f5.com/csp/article/K13734

If you get stuck maybe go to support.