Forum Discussion
emily_74156
Nimbostratus
NimbostratusHow to send a request to 2 pools
In my irule, I have this code -
if { [HTTP::uri] equals "/UpdateSoapHttpPort" } {
pool pool_1
pool pool_2
} else {
pool pool_3
}
But it doesn't send the request to both pools for this uri-/UpdateSoapHttpPort, it only goes to pool_1.
How to fix it so that the req goes to both pools for that particular URI?
- The_BhattmanHi Emily,
It doesn't work that way. It can only select the single pool that matches the conditional statement. What you should do is combine servers in each pool to a single pool which would work and adjust your iRule accordingly.
I hope this helps
CB 
emily_74156Yes, I can combine the servers from pool_1 and pool_2 into pool_1, but how do i adjust the irule to make the req go to 2 nodes in pool_1?- The_BhattmanThe LTM cannot send the same connection over to 2 or more nodes simultaneosly. What it does it sends the request to one of the nodes based on load balancing method you had set up - dividing multiple requests between the nodes.
CB - emily_74156If I want the same request to go to 2 nodes, how can I accomplish that?
- The_BhattmanYou can't send the same requests to 2 nodes at the same time.
CB - emily_74156no way around that?
- The_BhattmanI'm sorry to say it's not possible with the technology we have today.
May I ask why you want to send the same request to 2 nodes at the same time?
CB - emily_74156This is a business requirement. For that particular URI, it has to go to 2 nodes.
Is it possible that I can cache the request, then send it to the 2nd node by using the irule? - The_BhattmanWhat are you talking about is mirroring the requests. Even if you store it and some how send the same one to the 2nd node then node will respond back to the client and client will mostly likely not know what to do with a duplicate response.
Thanks,
CB - emily_74156that's fine. the duplicate response is not an issue. We did talk about this, the client indicates that it's a non-issue.
SO, is there a way to mirror the request, then send it to the 2nd node?
