Hauler - Kubernetes Air Gap Migration

WARNING - Work In Progress

API stability (including as a code library and as a network endpoint) is NOT guaranteed before v1 API definitions and a 1.0 release. The following recommendations are made regarding usage patterns of hauler:

alpha (v1alpha1, v1alpha2, ...) API versions: use only through haulerctl
beta (v1beta1, v1beta2, ...) API versions: use as an experimental library and/or API endpoint
stable (v1, v2, ...) API versions: use as stable CLI tool, library, and/or API endpoint

Purpose: collect, transfer, and self-host cloud-native artifacts

Kubernetes-focused software usually relies on executables, archives, container images, helm charts, and more for installation. Collecting the dependencies, standing up tools for serving these artifacts, and mirroring them into the self-hosting solutions is usually a manual process with minimal automation.

Hauler aims to fill this gap by standardizing low-level components of this stack and automating the collection and transfer of artifacts.

Usage

Package a self contained deployable cluster

# CLI 
# bare k3s cluster
hauler create

# k3s cluster with autodeployed manifests on boot
hauler create -p path/to/rawmanifests -p path/to/kustomizebase -p path/to/helmchart -i image

# Config File
hauler create [-c ./package.yaml]

Bootstrap a cluster from a packaged archive

hauler boot package.tar.zst

Relocate a set of images

hauler save -p path/to/manifests -i image:tag -i image@sha256:...

hauler relocate bundle.tar.zst airgap-registry:5000

Additional Details

Build

To build hauler, the Go CLI v1.14 or higher is required. See https://golang.org/dl/ for downloads and see https://golang.org/doc/install for installation instructions.

To build hauler for your local machine (usually for the package step), run the following:

mkdir bin
go build -o bin ./cmd/...

To build hauler for linux amd64 (required for the deploy step in an air-gapped environment), run the following:

mkdir bin-linux-amd64
GOOS=linux GOARCH=amd64 go build -o bin-linux-amd64 ./cmd/...

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