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Forum Discussion

Brandon_TN's avatar
Brandon_TN
Icon for Nimbostratus rankNimbostratus
Jul 17, 2025

failover issue between datacenters with GSLB

Ok I have been looking for the best solution for an application requirement.    I have an app that will be living in two datacenters. Each location has 4 servers running. What they want is the appl...
application delivery
FAILOVER
gslb servers
VGF5's avatar
VGF5
Icon for Cumulonimbus rankCumulonimbus
Jul 18, 2025

Update GSLB pool configuration with Minimum Active Members to 3. This means the VIP will be marked down if fewer than 3 servers are up (i.e., if 2 or more fail) . The BIG-IP DNS monitors the VIP. If the VIP is down, GTM will failover to DC2.

Injeyan_Kostas's avatar
Injeyan_Kostas
Icon for Nacreous rankNacreous
Jul 19, 2025

Hi VGF5​ is there such an option?
I couldn't find it.

  • VGF5's avatar
    VGF5
    Icon for Cumulonimbus rankCumulonimbus
    Jul 21, 2025

    Yes, we have that option under GSLB pool config. 

    If we are doing in LTM, K11428303: Priority group assigned to pool members does not take effect

     

    • Injeyan_Kostas's avatar
      Injeyan_Kostas
      Icon for Nacreous rankNacreous
      Jul 21, 2025

      But in GTM this actually checks available virtual servers not backend servers.

      In Ltm also min active members just enable priority group members, does not mark pool as unavailable.