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HA between GTM
Amr_Ali Do you mean having an HA device much like you have HA LTMs? If that's a yes you really don't have to do that because GTMs are inherently redundant for DNS because of how the sync works between them for DNS configuration. You might need them to be HA because they run multiple functions such as GTM, LTM, AFM, and so on but you should try and keep GTM off of the same box as those other services if possible.
I agree with Paulius 100%. If the F5 BIG-IPs only running GTM as dedicated module, no need for HA! Use GTM sync group and publish both listener addresses for DNS... or setup DNS anycast. If in HA, you don't have BOTH units responding to DNS (normal setup), but if both are standalone and part of the same GTM sync group, then you still have resiliency and depend on iQuery between both GTM instances and DNS for failover. If running more modules... like LTM and/or ASM the conversation changes. Most clients with run dedicated smaller devices for GTM/DNS only, and a bigger device for all other ADC functions.
- Amr_AliJun 05, 2023MVP
hello whisperer, I need to make HA between two GTM boxes at the same location ( datacenter ) not in different locations
- JRahmJun 05, 2023Admin
Hi Amr_Ali if they are standalone GTM devices, this is not a recommended configuration. Better to make them both active and in the sync group.
- Amr_AliJun 05, 2023MVP
so in this case when I configured them in sync group , both GTM will be active ???!!!
is there any way to make one of them active and the other one on standby
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