k8s-dns-failure

k8s-dns-failure is a skill for Claude Code, Codex from kudig-io/kudig-database. It costs 0 tokens per session (3,567 once invoked), scanned A, original, no licence file.

A guide for diagnosing and fixing DNS problems in Kubernetes, a system for running containerised applications. It focuses on CoreDNS, the component that helps services find one another and reach external services.

In plain words
What is it for?
Use it when Kubernetes services cannot find each other or cannot reach external systems because of DNS failures.
Why use it?
It helps trace failures caused by broken name lookups, which can stop service discovery and access to outside dependencies.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when Kubernetes services cannot find each other or cannot reach external systems because of DNS failures.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kudig-io/kudig-database/k8s-dns-failure
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add kudig-io/kudig-database --skill k8s-dns-failure
Clone the repo
git clone --depth 1 https://github.com/kudig-io/kudig-database

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for k8s-dns-failure

README.md
[![agentmods](https://agentmods.dev/badge/skills/kudig-io/kudig-database/k8s-dns-failure/github.svg)](https://agentmods.dev/skills/kudig-io/kudig-database/k8s-dns-failure)
Your own site
<a href="https://agentmods.dev/skills/kudig-io/kudig-database/k8s-dns-failure"><img src="https://agentmods.dev/badge/skills/kudig-io/kudig-database/k8s-dns-failure/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for k8s-dns-failure

Your own site · 80×15
<a href="https://agentmods.dev/skills/kudig-io/kudig-database/k8s-dns-failure"><img src="https://agentmods.dev/badge/skills/kudig-io/kudig-database/k8s-dns-failure.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,567 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.03567
Opus 5 $0.00000 $0.01784
Sonnet 5 $0.00000 $0.00713
Haiku 4.5 $0.00000 $0.00357

Measured today against content hash 082d0d5e30cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

k8s-dns-failure scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/diagnose-quick.sh, scripts/verify-dns.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

19-故障诊断/08-技能体系/skill-set/k8s-dns-failure/SKILL.md · 295 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today Changed · +19 lines 082d0d5e30cf
  2. 12d ago First seen · 276 lines · 0 tokens per session scan A 9d893a5568fe

Subscribe to this mod's changes

k8s-dns-failure is a skill published in the GitHub repository kudig-io/kudig-database (5 stars, last pushed yesterday), with no licence file. It costs nothing until one of its globs matches a file; then it loads 3,567 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.