k8s-api-troubleshooting SKILL.md skillA
k8s-api-troubleshooting from k8s-servant/k8s-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add k8s-servant/k8s-skills/k8s-api-troubleshooting@git:20261025.b852b9ePins git:20261025.b852b9e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- k8s-servant/k8s-skills
- Path
skills/k8s-api-troubleshooting/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261025.b852b9e, committed Oct 25, 2026
- Size
- 14,671 bytes
- Repository stars
- 35
- License
- Apache-2.0
Use when the Kubernetes API server itself refuses or fails a request, before any controller acts on it: "failed calling webhook", "admission webhook ... denied the request", "ValidatingAdmissionPolicy ... denied request", a ReplicaSet with FailedCreate and no pods, an APIService "False (ServiceNotFound)", "FailedDiscoveryCheck" or "MissingEndpoints", "unable to retrieve the complete list of server APIs", a namespace stuck in Terminating, "no matches for kind" or…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# API server troubleshooting Find out why the API server refuses or fails a request, and propose a fix. **Read first, ask before changing.** Run the investigation commands freely. Run a command under an "Ask first" line only after the user approves that exact command; if your credentials do not allow it, give it to the user to run. Never run a "Proposed fix"; hand it to the user. Every request goes through the same steps in the API server: **authentication** (who is asking: a 401 if nobody), **authorization** (may they: a 403 from RBAC), **admission** (mutating webhooks, schema validation, then ValidatingAdmissionPolicies and validating webhooks), then **storage** in etcd. Requests for an **aggregated API** (an APIService such as `v1beta1.metrics.k8s.io`) are sent on to another server instead, and **discovery** lists every group and version, including those. A failure at any step comes back to the caller, so the error message usually names the step: the webhook, the APIService, the kind and version, or the limit. The commands use placeholders: `my-namespace`, `my-app`, `my-webhook` (a webhook …
Read the whole file at its exact version.
How to install
mdr add k8s-servant/k8s-skills/k8s-api-troubleshooting@sha256:405dcb7058ca2014The line at the top of this page pins the label git:20261025.b852b9e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_suutbi46o5xqt5i4)
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Versions
The registry has recorded 1 version of this file, committed on Oct 25, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (14671 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
k8s-servant/k8s-skills · 35 stars · license Apache-2.0 · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_suutbi46o5xqt5i4 GET https://markdownregistry.com/api/v1/resolve?ref=k8s-servant/k8s-skills/k8s-api-troubleshooting GET https://markdownregistry.com/api/v1/blob/405dcb7058ca201430ab58d66c2ccd8f5a3f6a6b8a97262d8143ed82c5b161ae
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.