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Brijesh's avatar
Brijesh
Icon for Nimbostratus rankNimbostratus
Dec 09, 2020

iRule to select the health monitor for a pool looking at the host name value in the http header of the request.

I want to know if can create an iRule to select the health monitor for the pool  looking at the host name value in the http header of the request.

We have a scenario where a common pool (Pool Members are HA-Proxy router) is used by many VIPs. We want to apply the iRule on the VIPs which can select/assign the specific health monitor to common pool based on the SNI value on the http request.

application delivery
iRules
  • Dario_Garrido's avatar
    Dario_Garrido
    Icon for Noctilucent rankNoctilucent
    Dec 12, 2020

    Hello Brijesh.

     

    Pool monitoring works separately from the regular traffic. Actually, regular traffic is managed by TMM deamon and monitoring uses a different one (bigd).

    • bigd is control-plane
    • tmm is data-plane

     

    Having said this, you could modify some big-ip configuration using iRules+iCalls but I don't recommend you do that. Your best chance is to configure a custom monitor instead.

    REF - https://support.f5.com/csp/article/K31435017

     

    Regards,

    Darío.