Forum Discussion
Julian_46783
Nimbostratus
NimbostratusCan I drain/bleed a node through an Irule?
I'm looking for a way to allow only persistent or active connections to any given node.
LB::down node -> is the closest thing I can find, but it goes all the way and only allows active connections node.
I was wondering if there's a way to drain/bleed through a similar method
Thanks jpereira
3 Replies
hoolioCirrostratus
Hi jpereira,
What are you trying to accomplish and for what scenario? Is it for HTTP or some other protocol?
Aaron
Julian_46783A set of Application servers hold sessions and we want to start draining/bleeding them on a given event, say a response of 404?
To keep it simple, for instance:
when HTTP_RESPONSE {
if { [HTTP::status] eq "404" } {
[DRAIN MEMBER xxx.xxx.xxx.xx 80]
}
}
Just want to know if it's possible
Thanks
Jpereira- hoolioWhat if you use LB::down with no arguments? I believe that this will set the status of just the pool member to down--not the node--and might have the effect you're looking for. If that doesn't work, you might try explicitly setting the pool member down.
I think you can get the selected pool member info using LB::server (Click here) in HTTP_RESPONSE. If you get a runtime TCL error from trying this, you could save it in the LB_SELECTED event and then reference it in HTTP_RESPONSE. You might first try hardcoding the pool info with LB::down to see if the effect is what you're looking for.
Aaron
