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LDS_107638's avatar
LDS_107638
Icon for Nimbostratus rankNimbostratus
May 12, 2017

Selecting a GTM pool member based on the status of another gtm pool member

Have got a GTM with 2 wide IP's called wideip_A and wideip_B Both have got one pool with 2 members called memberA1, memberA2 and memberB1 and memberB2 The GTM uses iQuery to pool the respective LTM's The requirement is that I want memberB1 to be used only if memberA1 is up and memberB2 to be used only if memberA2 is up. Basically require some iRule and I cannot make use of monitors to fulfill the requirement.

 

When I try ... it returs an error on the gtm logs (tail -f /var/log/gtm)

 

when DNS_REQUEST { set members [active_members -list pool_dmz_https_2013-OWA] log local0. "Active members are: $members" }

 

Any clue..require an iRule to accomplish this.

 

application delivery
BIG-IP
iRules
  • jaikumar_f5's avatar
    jaikumar_f5
    Icon for Noctilucent rankNoctilucent
    May 12, 2017

    I believe there is already an inbuilt functionality called depends-on, 

    depends-on                    Specifies the names of virtual servers on which this pool member depends.

    Try the below,

    tmsh modify gtm pool b-pool members modify { memberB1 { depends-on add { memberA1 } } }
tmsh modify gtm pool b-pool members modify { memberB2 { depends-on add { memberA2 } } }