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jackyjoy123's avatar
jackyjoy123
Icon for Nimbostratus rankNimbostratus
Jan 29, 2021

Zero downtime deployment with f5 GTM+LTM ?.

Hello,   We have a GTM+LTM set up for our application which is running on 12 servers. This servers are separated in 4 LTMs with 3 servers each with monitoring set to a static page and "Action on se...
AAM
application delivery
iApps
JRahm's avatar
JRahm
Icon for Admin rankAdmin
Feb 01, 2021

If the action on service down is set to none, then you should be able to bleed active and persistent connections, depending on what the pool members are set to. If GTM is using the bigip monitor for your LTMs, then new DNS lookups will lead to a different answer and thus a different VIP than the previous answer, but that should only impact new DNS lookups by your client's name servers.

 

If I were troubleshooting this actively, I'd take a packet capture on a client machine where the behavior is repeatable AND the BIG-IP where the servers are being shut down.