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Type11_8030's avatar
Type11_8030
Icon for Nimbostratus rankNimbostratus
Jul 29, 2009

Best Way to Do Active/Standby on f5

Hello All,

 

 

Sorry for the basic post but I am new to f5 and coming from the Cisco 115xx load balancers.

 

 

In the 115xxx WebNS there is the idea of a Sorry Server (can have a couple of them) which basically means

 

 

-Send all Traffic to Server A for a service

 

-If Server A fails keepalive send all traffic to Server B

 

-If Server B fails keepalive send all traffic to Server C

 

 

So this is not the normal all nodes active or active but weighted that I have made rules for so far in the f5. This is active/standby and we only want traffic to go to one member of the pool at a time but still provide HA.

 

 

I think maybe I could just give all weight to Server A in a pool and no weight to Server B to accomplish what I am trying for but thought I would ask how best to do this before proceeding.

 

 

Thanks for helping a noobie
config
design
  • johns's avatar
    johns
    Icon for Employee rankEmployee
    Jul 29, 2009
    There may be couple of different ways you could do this.

     

    1. Use Priority level within the pool members with minimum active member set to a desired number. This will essentially bring up the lower priority member in case the number of available higher priority members fall below minimum active member value (must be set to other than 0)

     

     

    2. If this is HTTP service, then you can use Fallback Host feature in the HTTP Profile setting. This issues HTTP redirect to whatever destination you choose if all members are down.