kubernetes-sigs

    kubernetes-sigs/controller-runtime

    Repo for the controller-runtime subproject of kubebuilder (sig-apimachinery)

    backend
    k8s-sig-api-machinery
    Go
    Apache-2.0
    3.0K stars
    1.3K forks
    57 GitHub watchers
    Updated Nov 5, 2026
    View on GitHub

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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    3 releases in the last 90 days, the latest 35 days ago, with 372 contributors on GitHub.

    Use Cases & Benefits

    • Provides Go libraries to build Kubernetes controllers for managing cluster resources.
    • Ensures compatibility with specific Kubernetes client-go versions and supports seamless integration with Kubebuilder and Operator SDK.
    • Use for developing custom Kubernetes controllers to automate resource lifecycle management.
    • Use for extending Kubernetes APIs by building operators that manage complex applications.
    • Use for creating controllers that require tight version compatibility with Kubernetes client libraries.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    Apache 2.0

    Permissive: commercial use, modification and redistribution are allowed with attribution; includes an explicit patent grant from contributors.

    Community files

    • README: present
    • Contributing guide: present
    • Code of conduct: present

    Watch-outs

    No watch-outs from GStars' checks.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    The Kubernetes controller-runtime Project is a set of go libraries for building Controllers. It is leveraged by Kubebuilder and Operator SDK. Both are a great place to start for new projects. See Kubebuilder's Quick Start to see how it can be used.

    Every minor version of controller-runtime has been tested with a specific minor version of client-go. A controller-runtime minor version may be compatible with other client-go minor versions, but this is by chance and neither supported nor tested. In general, we create one minor version of controller-runtime for each minor version of client-go and other k8s.io/* dependencies.

    The minimum Go version of controller-runtime is the highest minimum Go version of our Go dependencies. Usually, this will be identical to the minimum Go version of the corresponding k8s.io/* dependencies.

    Compatible k8s.io/*, client-go and minimum Go versions can be looked up in our go.mod file.

    Excerpt from the kubernetes-sigs/controller-runtime README on GitHub (Apache-2.0 license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    1.3K+36

    Open issues

    69+3

    Compared with peers in Backend

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth

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    Category median56.0K+2.3K29—

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