• Stars
    star
    737
  • Rank 61,490 (Top 2 %)
  • Language
    Shell
  • License
    Apache License 2.0
  • Created over 5 years ago
  • Updated 3 months ago

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Repository Details

Production-grade, airgapped Kubernetes installer combining upstream k8s with overlays and popular components
Kurl-logo

kURL

FOSSA Status

kURL is a Kubernetes installer for airgapped and online clusters.

kURL relies on kubeadm to bring up the Kubernetes control plane, but there are a variety of tasks a system administrator must perform both before and after running kubeadm init in order to have a production-ready Kubernetes cluster, such as installing Docker, configuring Pod networking, or installing kubeadm itself. The purpose of this installer is to automate those tasks so that any user can deploy a Kubernetes cluster with a single script.

Getting Started

For more information please see kurl.sh/docs/

Community

For questions about using kURL, there's a Replicated Community forum, and a #kurl channel in Kubernetes Slack.

Notifications

kURL offers several optional add-ons for Kubernetes cluster creation. These open-source technology add-ons are distributed under various open-source licenses.

One optional add-on available for object storage is MinIO. Use of MinIO is governed by the GNU AGPLv3 license that can be found in their License file.

One optional add-on available for Metrics & Monitoring is Prometheus via the Prometheus Operator, which includes Grafana. Use of Grafana is currently governed by the GNU AGPL v3 license that can be found in their License file.

Contributing

Contributions are greatly appreciated. See CONTRIBUTING.md or more details. Before starting any work, please either comment on an existing issue, or file a new one.

Releases

For details on each release, see the changelog. For Replicated vendors, detailed release notes are available at Kubernetes Installer Release Notes on the Replicated documentation site.

Release assets and changelog are available on the GitHub Releases page.

Releases are created by a GitHub Workflow when a tag is pushed. The tag should follow the date format vYYYY.MM.DD-#.

A new release, from HEAD, can be tagged by running the following command:

make tag-and-release

To tag and release a specific commit:

make COMMIT_ID=<GITHUB_SHA> tag-and-release

The tag-and-release Make task enforces the git tree to be clean and a tag to be created against the main branch. To override this behavior call the underlying script directly:

./bin/tag-and-release.sh --commit-id=<GITHUB_SHA> --no-main --outdated

Software Bill of Materials

Signed SBOMs for kURL Go and Javascript dependencies are combined into a tar file and are included with each release.

  • kurl-sbom.tgz contains SBOMs for Go and Javascript dependencies
  • kurl-sbom.tgz.sig is the digital signature for kurl-sbom.tgz
  • key.pub is the public key from the key pair used to sign kurl-sbom.tgz

The following example illustrates using cosign to verify that kurl-sbom.tgz has not been tampered with.

$ cosign verify-blob --key key.pub --signature kurl-sbom.tgz.sig kurl-sbom.tgz
Verified OK

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