How emulate other architectures (ppc64le, arm64) to test Kubernetes code

readme.md

First, install podman and buildah. These tools support running containers build for other architectures like arm64 and ppc64le.

Next, create a Dockerfile, e.g.:

FROM ppc64le/golang:1.20.7-alpine
ADD kubernetes /kubernetes

Note that this dockerfile is for ppc64le, so can't be run directly with docker on an amd64 linux machine.

But it can be run using buldah:

buildah bud -f Dockerfile -t cross-arch-example .
container=$(buildah from cross-arch-example)

# use the container for whatever you need, e.g. to run a test:
buildah run $container -- sh -c 'cd /kubernetes/staging/src/k8s.io/apiextensions-apiserver && go test -v -timeout 30s -run ^TestCostEstimation/extended_library_replace$ ./pkg/apiserver/schema/cel'