Two years ago I have developed
grpc_health_probe out of
a real necessity: there was no way to health check gRPC applications in an
idiomatic and standardized way on Kubernetes. Fast forward two years, the tool
has been downloaded over 1.8 million times and used internally at Google as well
as externally in many companies. It has raised awareness around gRPC’s builtin
health protocol. I wrote about it on Google Cloud blog.