We have been using CF load balancing for years (we started back when it was still in BETA). We haven’t changed anything with our origin server setup for months (except for regular updates of packages, etc.)
Recently we are seeing issues that server are marked as critical (down) in the load balancing, even though they are up.
Sometimes we are seeing our server responding to the CF loadbalancer health check with a 499. Once this appears our server are marked as down.
We haven’t been able to track down a clear pattern. Is anyone elese seeing issues with the load balancing lately? Do you know if anything changed?