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Neo_Ph's avatar
Neo_Ph
Icon for Altocumulus rankAltocumulus
May 22, 2022

iRule cookie persistence and pool redirect

Hi all, base on the on below setup... When Pool A/NodeA1 goes down, we expect URI /beta/ requests to be sent to Pool B, as nodeA2 can't accept URI /beta/ requests. However, when Pool A/NodeA1 goes...
application delivery
irule cookie persistence pool redirect
  • Neo_Ph's avatar
    Neo_Ph
    May 10, 2024

    Tests were done in the production LTM instead, by creating a temporary VIP with same pool members.  A few users were able to test via the temporary VIP, and everything was working as expected.  Yet, it wasn't working on the production VIP. 
    I end-up creating a PoolC containing nodeA1 ONLY for /beta/ URI ONLY.  That way /beta/ URI would never reach nodeA2 when nodeA1 is down.   
    If PoolC/nodeA1 is UP, then PoolC will be used. Otherwise, it will hit the 2nd condition, redirecting /beta/ to PoolB.  Problem solved.

Neo_Ph's avatar
Neo_Ph
Icon for Altocumulus rankAltocumulus
May 10, 2024

Tests were done in the production LTM instead, by creating a temporary VIP with same pool members.  A few users were able to test via the temporary VIP, and everything was working as expected.  Yet, it wasn't working on the production VIP. 
I end-up creating a PoolC containing nodeA1 ONLY for /beta/ URI ONLY.  That way /beta/ URI would never reach nodeA2 when nodeA1 is down.   
If PoolC/nodeA1 is UP, then PoolC will be used. Otherwise, it will hit the 2nd condition, redirecting /beta/ to PoolB.  Problem solved.