lb_failed with lb mode rr does not seem to produce expeted results

But when I reboot one node from a two node pool the second node starts throwing 404's until the node monitors (http & icmp) take the node out of the pool.since there is 404, i don't think LB_FAILED will be triggered at that time.

 

 

The 404 or Not Found error message is a HTTP standard response code indicating that the client was able to communicate with the server, but the server could not find what was requested. A 404 error should not be confused with "server not found" or similar errors, in which a connection to the destination server could not be made at all. A 404 error indicates that the requested resource may be available again in the future.

 

 

http://en.wikipedia.org/wiki/HTTP_404

 

 

LB_FAILED is triggered when LTM is ready to send the request to a pool member and one hasn’t been chosen (the system failed to select a pool or a pool member), is unreachable (when no route to the target exists), or is non-responsive (fails to respond to a connection request).

 

 

http://devcentral.f5.com/wiki/iRules.LB_FAILED.ashx

 

 

i agree with Michael - u may catch 4xx code instead.