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matnetmin's avatar
matnetmin
Icon for Nimbostratus rankNimbostratus
Apr 23, 2020

Priority Activation Group - Revert back to top group

Hi,

 

Complete newbie question here.

 

I have a pool with 4 nodes as per setup

Node 1 - PAG 100

Node 2 - PAG 100

Node 3 - PAG 50

Node 4 - PAG 50

 

When we have Node 1 & 2 Down, Node 3 and 4 display a site offline page, which works great.

 

When Node 1 and 2 come back online, we are still using node 3 and 4, not so great.

 

I have also tried to get around this by removing nodes 3 and 4 and creating a 2nd pool with them, then using the following iRule

 

when HTTP_REQUEST {

  if {[active_members [LB::server pool]] < 1 } {

    pool Pool-2

  }

 }

 

Now the VIP does have a cookie insert persistence profile, which i think may be where i am getting stuck

 

What would be the best way to do this, without loading the page into iFiles.

 

application delivery
iRules
LTM

1 Reply

  • Simon_Blakely's avatar
    Simon_Blakely
    Icon for Employee rankEmployee
    Apr 24, 2020

    With that irule, do you have a OneConnect profile attached to the virtual?

     

    The OneConnect profile ensures that you make a new load-balancing decision on every HTTP Request, and not just the first one.

     

    Otherwise, you need to use a LB::detach in HTTP_RESPONSE.