Glu

A deployment pipeline framework that sticks

Glu is the missing piece in your CI/CD toolbelt. It is a framework for orchestrating, manipulating, and introspecting deployment configuration stored in version control.

Mission Statement

To simplify application deployments through a code-first framework that streamlines CI/CD processes. Glu replaces fragmented, manual workflows with maintainable pipelines, providing teams with enhanced visibility, traceability, and control over their deployment journey.

What Is It?

Glu is a framework built to help manage and coordinate multi-environment deployments using configuration stored in Git.

Tip

Read the CD Pipeline Manifesto to learn about the principles that guide Glu.

Glu has an opinionated set of models and abstractions, which when combined, allow you to build consistent command-line and server processes for orchestrating the progression of applications and configuration across target environments.

📖 Check out our introductory blog post to learn more about why we built Glu.

What's Included

• An engine for orchestrating the progression of resources across environments by opening pull requests in your Git repositories (optional).
• A CLI for interacting with the state of your pipelines.
• An API for interacting with the state of your pipelines.
• An (optional) UI for visualizing and interacting with the state of your pipelines.

Use Cases

Use it to implement anything that involves automating updates to Git repositories via commits and pull requests.

• ✅ Track new versions of applications in source repositories (OCI, Helm, etc) and trigger updates to target configuration repositories (Git).
• ⌛️ Coordinate any combination of scheduled, event-driven, or manually triggered promotions from one environment to the next.
• 🔍 Expose a single pane of glass to compare and manipulate the state of your resources in one environment to the next.
• 🗓️ Export standardized telemetry which ties together your entire end-to-end CI/CD and promotion pipeline sequence of events.

Getting Started

1. Install Glu

go get github.com/get-glu/glu

2. Follow the GitOps Example Repository to see Glu in action.

3. Implement your own pipelines using the Glu SDK.

Development

See DEVELOPMENT.md for more information.

Roadmap Ideas

In the future, we plan to support more functionality, such as:

• New sources:
  • Helm
  • Webhook / API
  • Kubernetes (direct to cluster)
• Progressive delivery (think Kargo / Argo Rollouts)
  • Ability to guard promotion with condition checks on resource status
  • Expose status via Go function definitions on resource types
• Pinning, history, and rollback
  • Ability to view past states for phases
  • Be able to pin phases to current or manually overridden states
  • Rollback phases to previously known states

Built By

The team at Flipt. We built Glu to power our own internal promotion pipelines and open-sourced it so that others can benefit from it.