Kluctl Documentation

The missing glue to put together large Kubernetes deployments.

Kluctl is the missing glue that puts together your (and any third-party) deployments into one large declarative Kubernetes deployment, while making it fully manageable (deploy, diff, prune, delete, …) via one unified command line interface.

Kluctl tries to be as flexible as possible, while remaining as simple as possible. It reuses established tools (e.g. Kustomize and Helm), making it possible to re-use a large set of available third-party deployments.

Kluctl is centered around “targets”, which can be a cluster or a specific environment (e.g. test, dev, prod, …) on one or multiple clusters. Targets can be deployed, diffed, pruned, deleted, and so on. The idea is to have the same set of operations for every target, no matter how simple or complex the deployment and/or target is.

Kluctl does not depend on external operators/controllers and allows to use the same deployment wherever you want, as long as access to the kluctl project and clusters is available. This means, that you can use it from your local machine, from your CI/CD pipelines or any automation platform/system that allows to call custom tools.

Flux support is in alpha state and available via the flux-kluctl-controller.

Kluctl in Short

💪 Kluctl handles all your deployments You can manage all your deployments with Kluctl, including infrastructure related and your applications.
🪶 Complex or simple, all the same You can manage complex and simple deployments with Kluctl. Simple deployments are lightweight while complex deployment are easily manageable.
🤖 Native git support Kluctl has native Git support integrated, meaning that it can easily deploy remote Kluctl projects or externalize parts (e.g. configuration) of your Kluctl project.
🪐 Multiple environments Deploy the same deployment to multiple environments (dev, test, prod, …), with flexible differences in configuration.
🌌 Multiple clusters Manage multiple target clusters (in multiple clouds or bare-metal if you want).
🔩 Configuration and Templating Kluctl allows to use templating in nearly all places, making it easy to have dynamic configuration.
⎈ Helm and Kustomize The Helm and Kustomize integrations allow you to reuse plenty of third-party charts and kustomizations.
🔍 See what’s different Always know what the state of your deployments is by being able to run diffs on the whole deployment.
🔎 See what happened Always know what you actually changed after performing a deployment.
💥 Know what went wrong Kluctl will show you what part of your deployment failed and why.
👐 Live and let live Kluctl tries to not interfere with any other tools or operators. This is possible due to it’s use of server-side-apply.
🧹 Keep it clean Keep your clusters clean by issuing regular prune calls.
🔐 Encrypted Secrets Manage encrypted secrets for multiple target environments and clusters.

What can I do with Kluctl?

Kluctl allows you to define a Kluctl project, which in turn defines Kluctl deployments and sub-deployments. Each Kluctl deployment defines Kustomize deployments.

A Kluctl project also defines targets, which represent your target environments and/or clusters.

The Kluctl CLI then allows to deploy, diff, prune, delete, … your deployments.

Where do I start?

Core Concepts

Core Concepts of Kluctl.

Get Started with Kluctl

Get Started with Kluctl.


Installing kluctl.


The philosophy behind kluctl.


The history of kluctl.



Description of configuration files and commands

Flux Support

Flux Kluctl Controller documentation.

Last modified May 23, 2022: docs: Update docs index (4d1e86f)