loxilb-ebpf VS lb-from-scratch

Have some per-cpu maps for debugging and update values of whatever you want to debug/check in these maps. Finally monitor these maps using bpftool while your custom load-balancer processes packets. Send only a few packets at a time to have a better grasp of what is happening. Meanwhile if you want to explore a more complicated ebpf load-balancer visit this repo.

Hey there, so its likely because 'git submodule update' in the beginning even before creating the docker container threw an error, thats likely the reason? What she mentions on the README.MD on the github page, libbpf is used, so we need to git submodule update for that to get the libbpf repo, failed for me. THis is supposed to be run before we even create the container isn't it? https://github.com/lizrice/lb-from-scratch

I'm just getting started messing with eBPF, specifically with this sample load balancer, and when trying to make some changes to it, I'm having trouble with not having a way to tell what's going on when the program is running. For example, I'll make some changes to the code for modifying the MAC or IP addresses, and when it doesn't work, I don't have any gdb-like functionality to see what variables are set to. I fixed my issue, but it took longer than I'd like so I'm just looking for more general guidance on debugging eBPF programs.