node-health-check

node-health-check is a skill for Claude Code, Codex from scitix/siclaw. It costs 38 tokens per session (1,541 once invoked), scanned A, original, Apache-2.0.

A diagnostic guide for Kubernetes worker nodes, the machines that run pods. It checks whether nodes are Ready and examines disk, memory, and process-ID pressure, taints, capacity, usage, events, and scheduled pods.

In plain words
What is it for?
Use it when a node is NotReady, reports DiskPressure, MemoryPressure, or PIDPressure, or is suspected of causing pod failures.
Why use it?
It helps determine whether a node is causing workloads to fail or remain unscheduled. It reports node problems without draining, cordoning, or restarting the node.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when a node is NotReady, reports DiskPressure, MemoryPressure, or PIDPressure, or is suspected of causing pod failures.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/scitix/siclaw/node-health-check
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 scitix/siclaw --skill node-health-check
Clone the repo
git clone --depth 1 https://github.com/scitix/siclaw

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 node-health-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/scitix/siclaw/node-health-check.svg)](https://agentmods.dev/skills/scitix/siclaw/node-health-check)
Your own site
<a href="https://agentmods.dev/skills/scitix/siclaw/node-health-check"><img src="https://agentmods.dev/badge/skills/scitix/siclaw/node-health-check.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,541 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00038 $0.01541
Opus 5 $0.00019 $0.00771
Sonnet 5 $0.00008 $0.00308
Haiku 4.5 $0.00004 $0.00154

Measured 8d ago against content hash c62503472d9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

node-health-check 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 8d ago.

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.

skills/core/node-health-check/SKILL.md · 177 lines

How it starts

The opening of the file, as written. The whole thing — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Node Health Check

When nodes are NotReady, experiencing resource pressure, or suspected of causing pod failures, follow this flow to diagnose node-level issues.

Scope: This skill is for diagnosis only. Once you identify the root cause, report it to the user and stop. Do NOT attempt to drain, cordon, or restart nodes — that should be left to the user or cluster administrator.

Diagnostic Flow

1. Get node overview

kubectl get nodes -o wide

Note the STATUS of each node. Healthy nodes show Ready. Look for NotReady, SchedulingDisabled, or condition-related flags like Ready,SchedulingDisabled.

2. Inspect specific node conditions

For any node showing issues — one call per node:

k8s_inspect(kind: "node", name: "<node>")

This returns the node's conditions, taints, cordon state and allocatable capacity together with its recent events and the phase distribution of the pods scheduled on it — the last of which would otherwise be a separate kubectl get pods --field-selector spec.nodeName=… call.

Read the final status: line: partial (pods: …) means the distribution is missing, so an absent pod count is not evidence that the node is empty.

Reach for kubectl describe node <node> when you need the Allocated resources table (what the scheduled pods have requested, as opposed to what the node offers) or the node's labels verbatim.

Key conditions:

Condition Healthy Value Problem Value Meaning
Ready True False/Unknown Kubelet is healthy and can accept pods
MemoryPressure False True Node memory usage is critically high
DiskPressure False True Node disk usage exceeds eviction threshold
PIDPressure False True Too many processes running on node
NetworkUnavailable False True Node network is not configured correctly

Also check:

  • Allocatable vs Capacity — shows total resources and what's available for pods
  • Allocated resources section — shows how much is requested/limited by pods on this node
  • Events — look for recent warnings

Read the full file on GitHub · 177 lines

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. 8d ago First seen · 177 lines · 38 tokens per session scan A c62503472d9a

Subscribe to this mod's changes

node-health-check is a skill published in the GitHub repository scitix/siclaw (233 stars, last pushed today), licensed Apache-2.0. It adds 38 tokens to every session and 1,541 once invoked, about $0.0002 per session on Opus 5. 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 2026-08-30.

Related

Other skills, from other repositories

k8s-dns-failure

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.

kudig-io/kudig-database · 0 tokens

incident-triage

Use when asked to triage, investigate, or diagnose a Kubernetes incident, outage, or unhealthy workload. Gives the step-by-step order of investigation and the format for the findings.

mezmo/aura · 41 tokens

ariadne-kubernetes-graph

Use for Ariadne MCP-backed Kubernetes state questions: translate operational questions into Cypher, repair graphquery failures, and decide when graphschema or graphhealth is needed. Best for live or snapshot-backed graph data about resource relationships; do not use for codebase-only tasks or generic Kubernetes…

REASY/k8s-ariadne-rs · 65 tokens

k8s-service-connectivity

A troubleshooting guide for Kubernetes service connectivity, where services provide stable network access to groups of running containers. It focuses on missing endpoints, selector mismatches, network policies, and kube-proxy problems.

kudig-io/kudig-database · 0 tokens

k8s-deployment-rollout

A troubleshooting workflow for failed Kubernetes Deployment releases and rolling updates that become stuck. Kubernetes is a system for running and managing containers.

kudig-io/kudig-database · 21 tokens

k8s-pod-crashloop

A troubleshooting guide for Kubernetes pods that repeatedly restart or run out of memory. Kubernetes is a system for running and managing containers, and a pod is its basic unit for running an application.

kudig-io/kudig-database · 0 tokens