hyperpod-node-debugger

A diagnostic guide for finding and fixing problems affecting one AWS SageMaker HyperPod cluster node. A node is an individual computer in the cluster, which may run on Kubernetes or the Slurm job scheduler.

In plain words
What is it for?
Use it when a specific node is unhealthy, unresponsive, stuck, marked down or drained, or needs to be considered for replacement.
Why use it?
It helps narrow down whether the problem comes from the node's network, accelerator hardware, storage, memory, scheduler state, or startup scripts. It keeps diagnostics read-only and presents state-changing commands for the customer to run.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/awslabs/agent-plugins/hyperpod-node-debugger
Any agent
npx skills add awslabs/agent-plugins --skill hyperpod-node-debugger
Clone the repo
git clone --depth 1 https://github.com/awslabs/agent-plugins

Made for: Claude Code, Codex.

Per session 139 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,861 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00139 $0.04861
Opus 5 $0.00069 $0.02431
Sonnet 5 $0.00028 $0.00972
Haiku 4.5 $0.00014 $0.00486

Measured yesterday against content hash b90a7e6747ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

hyperpod-node-debugger 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 yesterday.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/check-efa-sg.sh, scripts/check-node-reachability.sh, scripts/check-vpc-config.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.

plugins/sagemaker-ai/skills/hyperpod-node-debugger/SKILL.md · 270 lines

How it starts

The opening of the file, as written. The whole thing — 270 lines — stays where its author put it; the contents beside it link to each section on GitHub.

HyperPod Node Debugger

Operating policy. Run read-only diagnostics yourself. Never run a command that changes cluster, node, or workload state — present each one as a Suggested command (run this yourself) block and wait for the customer. Destructive order: investigate → reboot → replace (replace destroys root + secondary volumes; not supported on Slurm controller nodes). Never discard training state, logs, or caches on speculation.

IaC note (always include with mutation commands). When you suggest any command that changes cluster, VPC, SG, subnet, or EKS configuration (e.g. authorize-security-group-*, modify-vpc-attribute, update-cluster, kubectl label/cordon/drain, create namespace, set env daemonset), ask the customer first whether the cluster / VPC / SG is managed by Infrastructure-as-Code (CloudFormation, CDK, Terraform, Pulumi). If yes, tell them: "Apply this change in your IaC source first, then deploy through the pipeline — running the command directly will drift from your template and the next stack update may overwrite it." If they need to fix the issue immediately and the IaC change will follow, flag the drift explicitly so they remember to reconcile.

Read-only triage. scripts/triage-cluster.sh (and helpers check-efa-sg.sh, check-node-reachability.sh, check-vpc-config.sh) read state and print each issue as [FAIL] ... → references/node-diagnostics-detail.md § <section>. Catalog of customer-ticket patterns: references/node-issue-catalog.md.


Workflow

  1. Collect cluster name, region, suspect instance ID, exact error string from logs.
  2. Run scripts/triage-cluster.sh (add --node <INSTANCE-ID> to focus one node).
  3. For every [FAIL] / issue entry, Read the referenced section.
  4. Present: what script detected (copy the line verbatim), root cause, exact command(s) with instance/SG IDs filled in, blast radius (e.g. "reboots i-xxx", "wipes volumes on replacement"). For any command that mutates cluster/VPC/SG/EKS state, ask whether the affected resource is IaC-managed and surface the drift warning from the operating-policy note above.
  5. Wait for explicit customer approval. Destructive order: investigate → reboot → replace.
  6. Re-run triage to confirm. Iterate if not cleared.

Read the full file on GitHub · 270 lines

Files

What ships with it

6 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. yesterday First seen · 270 lines · 139 tokens per session scan A b90a7e6747ee

Subscribe to this mod's changes

hyperpod-node-debugger is a skill published in the GitHub repository awslabs/agent-plugins (876 stars, last pushed 5d ago), licensed Apache-2.0. It adds 139 tokens to every session and 4,861 once invoked, about $0.0007 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.

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