Is Skaffold the tool I should use?

[Keith Miller]

Hello all! So currently I have a Docker Compose script that sets up all of the external Docker images we need on a project. What I would like to do is instead of running locally have these images run in a GKE project for each developer and port forward to the local machine. The reason is that some of these images are x86_64 and don't run on Apple silicon. Can we use Skaffold to just manage these external Docker images for us?

Thank you!

- Keith

[Tejal Desai]

Hey Keith,

Skaffold maintainer here. You could definitely use `skaffold deploy --build-artifacts input.json`  to deploy already built images to GKE.

Below is sample input.json.

```

{
  "builds": [
    {
    "imageName": "frontend",
    "tag": "gcr.io/your-project/frontend:dev@sha256:blah"
    }
     {
    "imageName": "backend",
    "tag": "gcr.io/your-project/backend:dev@sha256:blah"
    }
  ]
}

```

We are currently working on a feature to build cross platform images to enable users on Apple silicon machines to build x86_64 images via locally installed docker.

You mentioned the images are "External docker images" so I am guessing you're not building these as part of your development process.

Let me know if you want to know more about building x_86 images on M1 machines.

Thanks

Tejal

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[Keith Miller]

Thank you so much for this! Yeah, we don't build those external images and they are JNI heavy so I don't think we are getting apple silicon versions anytime soon. Thank you for the offer to help though!

--

Keith Miller

Mythical Games

[Tejal Desai]

No problem! Glad this was helpful.

[Keith Miller]

Is there a way to run just the port-forwarding after you have run `skaffold deploy`? Reading the docs it looks like you have to rerun deploy if you get disconnected.

Thanks!

[Tejal Desai]

Hey Keith,

Can you tell me a little bit more about your use case? 

Skaffold deploy does not monitor the port-forwarding connections. You could use `skaffold run --tail` which builds. deploys and monitors the port-forwarding sessions. 

Thanks

Tejal

[Keith Miller]

Sure thing. So in my skaffold.yaml I have:

apiVersion: skaffold/v2beta26
kind: Config
metadata:
  name: mythical-external
deploy:
  kubectl:
    manifests:
    - k8s/external -deployment.yaml
    - k8s/external -service.yaml

Then running `skaffold deploy --port-forward` works perfectly. I was just wondering if it was possible to run `skaffold deploy` then later on fire the port-forwarding call on it's own. If not no worries, running `skaffold deploy --port-forward` again works, it just rebuilds the services.

Thank you!

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[Brian de Alwis]

If not no worries, running `skaffold deploy --port-forward` again works, it just rebuilds the services.

Since you don't have any build.artifacts, the second deploy should be the same except that Skaffold will generate a new `run id`.  The run id is a label that we apply to the deployed manifests to track the deployed pods to enable logging and port-forwarding.  You can specify a fixed run id with the `-l` argument, such as:

skaffold deploy -l skaffold.dev/run-id=fixed --port-forward

(or any other value for `fixed`).  The deployed manifests should be identical and thus treated as a no-op by  Kubernetes.  You can see the actual rendered manifests with `skaffold render -l skaffold.dev/run-id=fixed`.

Brian.

To view this discussion on the web visit https://groups.google.com/d/msgid/skaffold-users/CAArEt-3NTsPiUKRPtm2CpYDJa3vG-AFkjLq2pdsoWaW1nf3%3DGg%40mail.gmail.com.

[Keith Miller]

That was exactly what I was looking for, thank you so much!