readystack/kubeapiserver repository overview

⁠kube-apiserver

readystack/kubeapiserver:v1.36.6-CE-ubuntu24.04-r1

Source, recipe and records

• Source and build recipe: https://readystack.dev/products/kubeapiserver/recipe⁠
• Upstream source at this release's pinned commit (v1.36.6): https://github.com/kubernetes/kubernetes/tree/1b2171b110bb2a2542e1322035c6583ec86eb976⁠
• Product page: https://readystack.dev/products/kubeapiserver⁠
• Hermetic Build Kit for this release (free with an account): https://readystack.dev/products/kubeapiserver⁠
• Release history (JSON): https://readystack.dev/api/releases/kubeapiserver⁠
• Defect record: https://readystack.dev/defects.html?product=kubeapiserver⁠
• Today's scan: https://readystack.dev/products/kubeapiserver#pp-grade⁠
• Report an issue: https://github.com/ReadyStackFree/readystack/issues/new?template=bug.yml&product=kubeapiserver⁠
• Signing key (cosign): https://readystack.dev/keys/cosign.pub⁠
• Part of the Kubernetes VM Stack: https://readystack.dev/stacks/kubernetes-vm-stack⁠

A cosign-signed build of kube-apiserver v1.36.6 from Kubernetes (github.com/kubernetes/kubernetes, tag v1.36.6, commit 1b2171b110bb2a2542e1322035c6583ec86eb976), Apache-2.0, built from source on Go 1.26.10, built clean-room from official upstream source by ReadyStack⁠.

⁠Who uses it and why

Who: Cluster administrators and platform engineers who build and run their own Kubernetes control plane.

Why: kube-apiserver serves the Kubernetes API. It validates and configures the cluster's objects, such as pods and services, and is the front end to the shared state that every other component works through.

Use case: When an engineer applies a new deployment, the request goes to kube-apiserver. It checks the request, runs admission control and stores the result in etcd; the scheduler, the controllers and the kubelet on each node watch the API server and act on the change.

About the upstream project, written from its own description: https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/⁠ · https://kubernetes.io/docs/concepts/overview/components/⁠

⁠What you get

Signature, user and attestations below were measured on the published digest sha256:6933aa94d74f71cbe4f43e7883a8172d7779a8a870c7627a66644972e9ea313f on 2026-10-29.

• Scan scores — we scan every image we publish every day (an SBOM made with syft, vulnerabilities matched with grype, scored with cerodeo-v1, the rubric ce.rodeo published until 2026-10-26) and record each scan with how its score was derived. This release's first and latest scan: https://readystack.dev/products/kubeapiserver⁠
• ReadyStack release check — passed at release on 2026-10-29: no fixable critical or high vulnerability (Docker Scout and OSV), a non-root user, SBOM and provenance attached. This is ReadyStack's own test, not a Docker grade; vulnerabilities published since then are in today's result at https://readystack.dev/queue⁠.
• Signed — cosign signature by the ReadyStack release key (fingerprint 04daa92344a52dbc) on this release's index digest sha256:6933aa94d74f71cbe4f43e7883a8172d7779a8a870c7627a66644972e9ea313f; verify with cosign verify --key https://readystack.dev/keys/cosign.pub readystack/kubeapiserver:v1.36.6-CE-ubuntu24.04-r1.
• Attestations — An SPDX SBOM and SLSA v1 build provenance are attached to this digest.
• Runs as a non-root user (999:999).
• Built from source by ReadyStack.

⁠Which tag should I pull?

This image follows the ReadyStack release-tag convention:

• The current release is v1.36.6-CE-ubuntu24.04-r1 — the release listed at readystack.dev. Release tags use the pattern <upstream-version>-CE-<base-os>-r<N>; the current one is signed, attested (SBOM + provenance), and is provided under the ReadyStack Agreement⁠.

• Earlier release tags (an older version or revision in the same pattern) are superseded. They stay pullable so existing deployments can pin them, but they are no longer re-graded, and fixes appear only in newer releases: move to the current release. For a superseded release's build kit, ask support.

• Release tags never move, so pulling the same tag again never changes the image. To be offered each new release automatically (a new revision r<N+1>, or a new upstream version), use the ReadyStack Renovate preset: https://readystack.dev/updates.html⁠

• Any tag beginning with internal- is an engineering-pipeline artifact published for build observability. It is unsupported, may change or disappear without notice, and must not be used in production.

# ✓ current release
docker pull readystack/kubeapiserver:v1.36.6-CE-ubuntu24.04-r1

# ✗ unsupported (do not pull)
docker pull readystack/kubeapiserver:internal-...

This release is signed; verify it with cosign verify --key https://readystack.dev/keys/cosign.pub readystack/kubeapiserver:v1.36.6-CE-ubuntu24.04-r1 (the signature is recorded in the public Sigstore transparency log). Support: [email protected]⁠, as set out in the ReadyStack Agreement⁠.

⁠Deployment

One binary per image, as upstream's images: /usr/local/bin/kube-apiserver, started by kubeadm's static Pod manifest /etc/kubernetes/manifests/kube-apiserver.yaml (command: kube-apiserver --advertise-address=... ). The image's ENTRYPOINT is /go-runner (upstream's kube-log-runner); a Pod command replaces it. In the Kubernetes VM Stack the image is mirrored into the local registry as <LOCAL_REGISTRY>/kube-apiserver:v1.36.6 and kubeadm init/join pull it from there (imageRepository in kubeadm-config.yaml).

docker run --rm readystack/kubeapiserver:v1.36.6-CE-ubuntu24.04-r1 kube-apiserver --version

⁠The full ReadyStack Hermetic Build Kit

The complete --network=none build kit for this image — plus admin/DB/API handbooks, the build's validation records, and its build provenance records — is a free download for any registered account at readystack.dev/products/kubeapiserver⁠. A clean-room rebuild from this release's archive on an egress-blocked host reproduced its linux/amd64 digest sha256:49c4d7708668d7ab42ae0d1d3d584063f67ef87f2d746e21d6709288afdb997e on 2026-10-29.

— ReadyStack · readystack.dev