This is a perfect scenario for a custom LB policy. Since LB policies form a tree, you could easily have your policy delegate to either a PickFirst or RoundRobin policy depending on whether or not the LB is up. Just have your policy define a ForwardingLoadbalanceHelper whose updateBalancingState passes the picker from the oppropriate downstream policy.
On Fri, Nov 3, 2023 at 12:29 PM Krishna Sai Veera Reddy < krishnasaiveerareddy...@gmail.com> wrote: > Hello All, > > I am working on a gRPC client that connects to a gRPC service fronted by > an LB but would like the client to automatically fallback to using > round-robin DNS to directly connect to the backend servers when the LB goes > down. How do I go about this? Would I need to implement my own custom LB > policy? Any help is appreciated and thanks in advance! > > -- > You received this message because you are subscribed to the Google Groups " > grpc.io" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to grpc-io+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/grpc-io/df8f4a85-5020-4c68-bb94-cbea67d7c75an%40googlegroups.com > <https://groups.google.com/d/msgid/grpc-io/df8f4a85-5020-4c68-bb94-cbea67d7c75an%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/CANuT3qXT1s%3DPZmL8K9vaVMthqebFJ0vD0TSJVeNHFEv1LQeDbw%40mail.gmail.com.
