If I define a load balancer configuration that routes requests between two different origins to be able to create a rule/behavior to be able to route the request to a specific origin when needed?
Ideally I would like to do this with a header value check. If header foo=bar, route request to server1.
The use case is that I have a web application that I would like to load balance. When I need to do an update to that application, it needs to occur from a specific server in order for backend rsync tasks to push the web folder to the other server.