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geo_1997's avatar
geo_1997
Icon for Nimbostratus rankNimbostratus
Mar 26, 2025

GSLB not marking local VS as down

Hi all,

I currently have 2 BIG-IP nodes with their own separate LTM pool.

When all pool members on 1 BIG-IP node are down, I would have expected the VIP to be marked down in the GSLB VIP pool as well, but this does not seem to be the case for local VIPs.

So in my situation, I shut down all pool members on BIG-IP node B.

BIG-IP node A sees only its own VIP as available and online, and marks the remote VIP as offline.
However, on BIG-IP node B, both VIPs are marked as green.

This is a problem, because users are being routed to a VIP that has no active pool members.

Its worth mentioning that the VS correctly marks itself down (available - the children pool members might be disabled) on BIG-IP node B, but this is not reflected in the GSLB VIP pool.

I have no health monitor in the VIP pool, my GSLB > Servers are using the bigip health monitor (I believe this is default for BIG-ip System) and the virtual servers are using a HTTPS health monitor.

Any help here would be greatly appreciated, please let me know if I can provide any additional information


3 Replies

  • Hello,

     

    Do you have object GSLB Server for BIG-IP DNS devices ?

  • Hello,
    It seems like the issue might be related to the absence of a dedicated health monitor in the GSLB VIP pool. Try adding an HTTPS health monitor directly to the VIP pool in GSLB to ensure accurate status checks. This should help synchronize the health state correctly across nodes.

    Best Regards,
    David Ball

    • LiefZimmerman's avatar
      LiefZimmerman
      Icon for Admin rankAdmin

      david598ball - If your answer is AI/LLM assisted you must make a note to that affect in your reply or, per community guidelines, your account is subject to permanent suspension.