Hi Claus, Thanks for creating a ticket. I think Service Unavaliable should be find for load balancer (LB).
In my particular case load balancer will be checking some predefined healthcheck/status page with a status info that can be parsed by LB. E.g. every 5 seconds the LB will issue a GET request to some url, if the returned status is negative, the LB will take the server out of a pool. When we are about to perform maintenance, we will indicate in our healthcheck page that the server is about to go down. Then, after a delay we will initiate a gracefull shutdown. I now realize that with the health check page I can in fact simply use the "Defer" option as you originally suggested. I will let the LB know that we are about to shutdown via healthcheck page first, and so it should stop redirecting new requests to the machine in question. Eventually, all the in flight exchanges will finish, and the machine can be completely shutdown. Thanks again, Ilya.
