Running Rust on Arm with docker
I have a small home lab kubernetes cluster running k3s from rancher labs. As part of that deployment, the traefik ingress controller is included. This post is first in a series where I muddle through exploring the traefik ingress using a rust webserver.
Covered in this post.
- Rust workloads on k8s with ARM and Docker.
What will be running?
Since my home lab cluster runs on 4 raspberry pi’s, some work will be needed to get a properly formatted image. For this I’ll be using docker buildx to build our images for multiple targets. This post will review the steps needed to get a working docker image deployed onto an ARM cluster using docker and kubernetes.
Setup buildx for Arm Images.
# enable experimental buildx commands.
export DOCKER_CLI_EXPERIMENTAL=enabled
# enable arm64 containers on your local machine through qemo.
docker run --rm --privileged docker/binfmt:820fdd95a9972a5308930a2bdfb8573dd4447ad3
# create builder
docker buildx create --name arm-builder
Dockerfile:
FROM rustlang/rust:nightly-slim as builder
WORKDIR /usr/src/ping-server
COPY . .
RUN cargo install --path .
FROM debian:buster-slim
RUN apt-get update
COPY --from=builder /usr/local/cargo/bin/ping-server /usr/local/bin/ping-server
CMD ["ping-server"]
Feel free to modify this for your own use, it should work with the example repo
Building the included Rust language docker image + echo server.
# enable experimental buildx commands.
export DOCKER_CLI_EXPERIMENTAL=enabled
# enable arm64 containers on your local machine through qemo.
docker run --rm --privileged docker/binfmt:820fdd95a9972a5308930a2bdfb8573dd4447ad3
# create builder
docker buildx create --name arm-builder
docker buildx use pi-builder
docker buildx build --platform linux/amd64,linux/arm/v7,linux/arm/v6,linux/arm/arm64 -t us.gcr.io/orndorff-ops/rust-ping-server . --push