GTM HA sync

[mabdrasol]

Hello,

we have BIGIP HA pair running (LTM+GTM), only LTM configurations are replicated between ha pairs.

how to add GTM also to sync group?

[gersbah]

For reasons I don't understand, DNS uses a different HA/sync method than the rest of the BIGIP world.

You can read up on it for example here: https://support.f5.com/csp/article/K13734 here: https://techdocs.f5.com/kb/en-us/products/big-ip-dns/manuals/product/big-ip-dns-implementations-14-1-0/11.html and here: https://techdocs.f5.com/kb/en-us/products/big-ip-dns/manuals/product/big-ip-dns-implementations-14-1-0/03.html

[mabdrasol]

Hello gersbah,

thanks for your valuable feedback, I have read this document before but I am confused in some points below

-when add standby node as a server at the active node do I will use the self IP of the standby node ?

-gtm_add script give warning as it will erase all configurations? is it mean DNS configurations only or all configurations of the box?

[Hoang_Hung]

You can using it. It will helpfull to you.

https://agility17dns-docs.readthedocs.io/en/latest/#id14

[mabdrasol]

thanks Hoang,

really it is very useful link

do we have to add the standby node in HA as a different server or just add the self ip of standby node to the same server of active node?

[Richard_Shuford]

The BIG-IP DNS/GTM training exercise at

https://agility17dns-docs.readthedocs.io/en/latest/

may once have been a true "latest", but as of this writing it is a few

years old, and a couple of details of BIG-IP DNS have changed.

The exercise was based on BIG-IP software Release 12.1.x, but one notable

change to the user interface was incorporated beginning with Release 13.1.0.

When configuring...

DNS >> GLSB : Servers : Server.List >> New.Server

...and you get to the step for adding a BIG-IP device, the old GUI

screen would allow you to choose between a standalone BIG-IP system

and a 2-member DSC (HA) setup, with separate server-type choices:

BIG-IP System (Single)

BIG-IP System (Redundant)  [that is, an HA pair of 2 systems]

With Release 13.0 (and later), the "General Properties/Product" choices

offer only a combined type "BIG-IP System" -- but to the menu was added

a "Devices" section. Within this "BIG-IP System Devices" block there is

a small (and easily overlooked) button marked "Add". When you click this

little button, the webpage pops up a box "Add BIG-IP System Device" for

entering IP addresses and other parameters of one BIG-IP system. The

"Add" function can be invoked multiple times, thus supporting DSC groups

containing more than 2 BIG-IP systems.