Cannot publish images on MacOS host

[aliok]

I am running some reconciler tests (specifically, the ones in Knative Eventing) on my MacOS machine.

The framework tries to do ko publish: https://github.com/knative-sandbox/reconciler-test/blob/be32f9c185c5e5596c24c7a70831fe15032d6f81/pkg/images/ko.go#L25

2022/01/12 15:03:03 failed to publish images: error building "ko://knative.dev/reconciler-test/cmd/eventshub": no child with platform darwin/amd64 in index gcr.io/distroless/static:nonroot

When I pass a PLATFORM=linux/amd64 env var, this time I get this:

2022/01/12 15:04:01 error creating builder: error setting up builder options: cannot use --platform with GOOS="darwin"

...and, I cannot set GOOS env var to my call for test as it doesn't make sense.

[aliok]

As a workaround, what I did locally is, I change the cmd function here: https://github.com/knative-sandbox/reconciler-test/blob/be32f9c185c5e5596c24c7a70831fe15032d6f81/pkg/images/cmd.go#L26-L31

func cmd(cmdLine string) *exec.Cmd {
	cmdSplit := strings.Split(cmdLine, " ")
	cmd := cmdSplit[0]
	args := cmdSplit[1:]
	c := exec.Command(cmd, args...)
	c.Env = os.Environ()
	c.Env = append(c.Env, "GOOS=linux")
	c.Env = append(c.Env, "CGO_ENABLED=0")
	c.Stderr = os.Stdout // Pipe the stderr in stdout
	return c
}

I also removed the PLATFORM env var.

[aliok]

Why CGO_ENABLED=0? I was having this issue due to cross compilation: golang/go#22510

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[aliok]

I bumped into a similar issue today. This time with an Apple Silicon machine:

logger.go:130: 2024-09-19T12:00:12.656+0300	DEBUG	ko/cmd.go:55	2024/09/19 12:00:12 Using base gcr.io/distroless/static:nonroot@sha256:dcd3f1f09adef5689088c9c4d96a8d98c889d8281d3946145074f89eafe7e1af for knative.dev/reconciler-test/cmd/eventshub	{"test": "TestIntegration"}
    logger.go:130: 2024-09-19T12:00:12.681+0300	DEBUG	ko/cmd.go:55	Error: failed to publish images: error building "ko://knative.dev/reconciler-test/cmd/eventshub": no matching platforms in base image index	{"test": "TestIntegration"}
    logger.go:130: 2024-09-19T12:00:12.703+0300	DEBUG	ko/cmd.go:55	2024/09/19 12:00:12 error during command execution:failed to publish images: error building "ko://knative.dev/reconciler-test/cmd/eventshub": no matching platforms in base image index	{"test": "TestIntegration"}
...
    logger.go:130: 2024-09-19T12:01:29.025+0300	WARN	environment/images.go:100	Ko publish failed, using image directly	{"test": "TestIntegration", "error": "ko publish failed: exit status 1 -- command: [\"go\" \"run\" \"github.com/google/ko@v0.11.2\" \"publish\" \"-B\" \"knative.dev/reconciler-test/cmd/eventshub\"]", "image": "knative.dev/reconciler-test/cmd/eventshub"}

[aliok]

Ok, this time, I don't change the vendored reconciler-test code.

Instead,

• Run the command manually: go run github.com/google/ko@v0.11.2 publish -B knative.dev/reconciler-test/cmd/eventshub
• Get the image output: docker.io/aliok/eventshub@sha256:8d039adcf7a375adeab0954786fbb9da615973c09001de87a3a6dfc19fae2b78 or docker.io/aliok/eventshub:latest
• Use that temporarily (no checking in) in the test setup:

        ctx, env := global.Environment(
                 ...
		// TODO: remove
		eventshub.WithCustomImage("docker.io/aliok/eventshub:latest"),
	)