Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Paul_Hoyland's avatar
Paul_Hoyland
Icon for Nimbostratus rankNimbostratus
May 21, 2019

BIGIP DNS - What configuration get replicated by Sync group

Can anyone point me at some resources that explain what is replicated among devices by configuration sync on BIG-IP DNS? It seems that things like listeners and DNS profiles aren't synced so just wan...
application delivery
BIG-IP DNS
operations
sync
merlin87's avatar
merlin87
Icon for Altocumulus rankAltocumulus
Oct 03, 2019

I would check that you have the same Sync Group Name specified on each GTM and also you would need to run the gtm_add command from bash once from each GTM you are pulling into the GTM Mesh, to get them to swap certs and build the iQuery connections.

 

Sync Group: DNS > Settings > GSLB > Group Name

 

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

 

Checking the sync connection with iQuery from the bash prompt and checking in /var/gtm should give you an idea as to what the issue may be.

 

https://support.f5.com/csp/article/K13690

patonbike's avatar
patonbike
Icon for Cirrus rankCirrus
Oct 04, 2019

OK I was missing the device cert for 1 of the units under gslb -> servers -> server certs. For some reason on 1 unit, it automatically added Self + Peer. One the other unit it only added Self.

 

That fixed iquery, then I had not also configured a data center and servers under gslb -> servers -> server list. Everything seems to be working now.