Building from source#
Setting up a developer environment#
Skyplane is composed of the client (runs locally on a user’s laptop) and gateway VMs (runs in respective clouds). Normally, the gateways use a pre-built nightly Docker image containing the latest build of the Skyplane gateway code (
public.ecr.aws/s6m1p0n8/skyplane:edge). However, if you modify the gateway source (under
skyplane/gateway), you will need to rebuild the gateway Docker image and push it to a container registry.
Ensure you have authenticated your Github account with Docker:
curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh
Create a Personal Access Token with “write:packages” permissions
Register the token with Docker:
echo <PERSONAL_ACCESS_TOKEN> | sudo docker login ghcr.io -u <GITHUB_USERNAME> --password-stdin
Building and testing Skyplane#
Building and pushing a Skyplane Docker image#
To package the code into a Docker image and push it to a container registry on your account, run the following command (substitute YOUR_GITHUB_USERNAME_HERE for your Github username):
export SKYPLANE_DOCKER_IMAGE=$(bash scripts/pack_docker.sh <YOUR_GITHUB_USERNAME_HERE>)
This will build the Skyplane Docker image for the gateway and push it ghcr.io under your user account. When running a Skyplane transfer, any provisioned gateways will pull this image from the
SKYPLANE_DOCKER_IMAGE environment variable to ensure a reproducible environment.
First time setup: make sure ghcr image is “public”#
By default, new packages on ghcr are private. To make the package public so gateways can download the image, convert the package to public (you only need to do this once):
Navigate to your newly created package on Github at https://github.com/users/<YOUR_GITHUB_USERNAME_HERE>/packages/container/package/skyplane. Make sure to substitute your GitHub username for <YOUR_GITHUB_USERNAME_HERE>.
Click on the “Package Settings button at the top right of the Skyplane package page with the gear icon.
Click the “Make public” button.
Building the Skyplane client#
We use Poetry to manage package dependencies during development. For convenience, we provide a Poetry wrapper via
setup.py. To build the client, install the Skyplane package in development mode. The package points to your current checked-out version of the code, and any edits to the Skyplane client will immediately apply to the
skyplane CLI command.
pip install -e .
Testing a transfer#
We can run the
skyplane CLI to test a transfer. The CLI will read your
SKYPLANE_DOCKER_IMAGE environment variable and use that Docker image when launching gateways.
skyplane init skyplane cp s3://... s3://...
If testing transfers repeatedly, we recommend using the
--reuse-gateways to reduce setup time.
Skyplane has debugging tools to
ssh into gateway instances, view detailed transfer logs, and query chunk states during transfers. See Debugging Tools for more.