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75 lines
2.4 KiB
Markdown
75 lines
2.4 KiB
Markdown
# Using LinuxKit on Google Cloud Platform (GCP)
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This is a quick guide to run LinuxKit on GCP. A lot of internal development and CI
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has used Google Cloud so the support is very good; other platforms will have similar support soon.
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## Setup
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You have two choices for authentication with Google Cloud
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1. You can use [Application Default Credentials](https://developers.google.com/identity/protocols/application-default-credentials)
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2. You can use a Service Account
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### Application Default Credentials
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You need the [Google Cloud SDK](https://cloud.google.com/sdk/)
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installed. Either install it from the URL or view `brew` (on a Mac):
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```shell
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brew tap caskroom/cask
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brew cask install google-cloud-sdk
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```
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Or via source code:
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```shell
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curl -SsL https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-151.0.0-darwin-x86_64.tar.gz
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tar xzvf google-cloud-sdk-151.0.0-darwin-x86_64.tar.gz
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./google-cloud-sdk/install.sh
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```
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Then, set up some environment variables (adjust as needed) and login:
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```shell
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export CLOUDSDK_CORE_PROJECT=<GCP project>
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export CLOUDSDK_COMPUTE_ZONE=europe-west1-d
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gcloud auth login
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```
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The authentication will redirect to a browser with Google login.
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Also authenticate local applications with
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```
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gcloud auth application-default login
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```
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### Service Account
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You can use [this guide](https://cloud.google.com/compute/docs/access/create-enable-service-accounts-for-instances#createanewserviceaccount)
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to create a Service Account.
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Make sure to download the credentials in JSON format and store them somewhere safe.
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## Build an image
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Add a `gcp-img` output line to your yaml config, see the example in [`examples/gcp.yml`](../examples/gcp.yml).
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Then do `moby build myprefix.yml`
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This will create a local `myprefix.img.tar.gz` compressed image file.
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## Push image
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Do `linuxkit push gcp -project myproject-1234 -bucket bucketname myprefix.img.tar.gz` to upload it to the
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specified bucket, and create a bootable image from the stored image.
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Alternatively, you can set the project name and the bucket name using environment variables, `CLOUDSDK_CORE_PROJECT` and `CLOUDSDK_IMAGE_BUCKET`.
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See the constant values defined in [`src/cmd/linuxkit/run_gcp.go`](../src/cmd/linuxkit/run_gcp.go) for the complete list of the supported environment variables.
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## Create an instance and connect to it
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With the image created, we can now create an instance and connect to
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the serial port.
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```
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linuxkit run gcp -project myproject-1234 myprefix
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```
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