health check for gRPC containers

[ganesh-dataminr]

Feature request

Currently it looks like there is no equivalent for /health in the gRPC containers. Could a kubernetes compatible health probe be added?

Motivation

Currently, I am writing custom commands to enable the gRPC container within kubernetes. Enabling this makes the gRPC docker container more complete with ootb kubernetes deployment capabilities.

Your contribution

I am not a rust developer but happy to make a PR with some guidance.

[happysansam]

Check this out
https://github.com/grpc-ecosystem/grpc-health-probe

FROM ghcr.io/huggingface/text-embeddings-inference:v1.6

# Install the required packages
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    wget && \
    rm -rf /var/lib/apt/lists/*

# Install the grpc_health_probe tool
RUN GRPC_HEALTH_PROBE_VERSION=v0.4.13 && \
    wget -qO/bin/grpc_health_probe https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/${GRPC_HEALTH_PROBE_VERSION}/grpc_health_probe-linux-amd64 && \
    chmod +x /bin/grpc_health_probe

readinessProbe:
  exec:
    command: ["/bin/grpc-health-probe", "-addr=:80"]
  initialDelaySeconds: 3
  periodSeconds: 5

livenessProbe:
  exec:
    command: ["/bin/grpc-health-probe", "-addr=:80"]
  initialDelaySeconds: 10
  periodSeconds: 10

[omBratteng]

Kubernetes has native support for gRPC healthcheck (1.27+), so yo can just add this to the deployments

    livenessProbe:
      grpc:
        port: 80