k8s-rbac-troubleshooting SKILL.md skillA
k8s-rbac-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-rbac-troubleshooting@git:20261025.3c8f538Pins git:20261025.3c8f538 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-rbac-troubleshooting/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261025.3c8f538, committed Oct 25, 2026
- Size
- 10,872 bytes
- Repository stars
- 35
- License
- Apache-2.0
Use when a Kubernetes request is refused by RBAC: "Error from server (Forbidden)", "User ... cannot list resource ... in the namespace" or "at the cluster scope", a ServiceAccount, controller, CI job or person getting 403, a RoleBinding that does not seem to apply (wrong namespace, wrong subject, a ClusterRole bound with a RoleBinding), "is attempting to grant RBAC permissions not currently held", "roleRef ... field is immutable", 401 Unauthorized versus 403 Forbidden, or a custom resource…
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
# RBAC troubleshooting Find out why Kubernetes refuses a request, and propose the smallest grant that fixes it. **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 is made by a **subject**: a user, a group, or a ServiceAccount, which authenticates as `system:serviceaccount:<namespace>:<name>`. RBAC allows a request only when a **binding** gives the subject a **role** whose rules cover the verb, the API group, the resource and the namespace. There are no deny rules: a 403 means that no binding allowed it. A **RoleBinding** grants its role in its own namespace only; a **ClusterRoleBinding** grants a ClusterRole everywhere, including cluster-scoped resources such as nodes and namespaces. The commands use placeholders: `my-namespace`, `my-app` (the ServiceAccount and its workload), `my-binding` and `my-role`. Replace them with the real names. The built-in `view` role …
Read the whole file at its exact version.
How to install
mdr add k8s-servant/k8s-skills/k8s-rbac-troubleshooting@sha256:50c2123d39b83e16The line at the top of this page pins the label git:20261025.3c8f538, 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_f3ljyenudevfwppl)
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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 (10872 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_f3ljyenudevfwppl GET https://markdownregistry.com/api/v1/resolve?ref=k8s-servant/k8s-skills/k8s-rbac-troubleshooting GET https://markdownregistry.com/api/v1/blob/50c2123d39b83e16122be93ad71d400066f72530e7dd3662b9d98355b92bb79b
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.