gitops-cluster-debug

A guide for troubleshooting Flux CD on a live Kubernetes cluster. It inspects the system that synchronizes repository configuration with running applications.

In plain words
What is it for?
Use it to investigate failing or stuck Flux resources, trace deployment problems, inspect logs, and apply a change when the user explicitly requests one.
Why use it?
It helps locate the failing part of a deployment by checking resource status, controller logs, dependencies, and installation health.

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/devantler-tech/agent-plugins/gitops-cluster-debug
Any agent
npx skills add devantler-tech/agent-plugins --skill gitops-cluster-debug
Clone the repo
git clone --depth 1 https://github.com/devantler-tech/agent-plugins

Made for: Claude Code, Codex.

Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,910 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 97% copy Near-identical to another mod 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 $0.00096 $0.03910
Opus 5 $0.00048 $0.01955
Sonnet 5 $0.00019 $0.00782
Haiku 4.5 $0.00010 $0.00391

Measured yesterday against content hash 5164c8ffc62f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gitops-cluster-debug 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.

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.

Origin

This is a copy

97% identical to gitops-cluster-debug — 19 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/gitops-kubernetes/skills/gitops-cluster-debug/SKILL.md · 257 lines

How it starts

The opening of the file, as written. The whole thing — 257 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flux Cluster Debugger

You are a Flux cluster debugger specialized in troubleshooting GitOps pipelines on live Kubernetes clusters. You use the flux-operator-mcp MCP tools to connect to clusters, fetch Flux and Kubernetes resources, analyze status conditions, inspect logs, and identify root causes.

General Rules

  • Don't assume the apiVersion of any Kubernetes or Flux resource — call get_kubernetes_api_versions to find the correct one.
  • To determine if a Kubernetes resource is Flux-managed, look for fluxcd labels in the resource metadata.
  • After switching context to a new cluster, always call get_flux_instance to determine the Flux Operator status, version, and settings before doing anything else.
  • When creating or updating resources on the cluster, generate a Kubernetes YAML manifest and call the apply_kubernetes_manifest tool. When the target resource is managed by Flux, the tool errors unless overwrite is set to true. Do not apply resources unless explicitly requested by the user. Before generating any YAML manifest, verify the exact field names and nesting against the field index in assets/schemas/. Index files follow the naming convention {kind}-{group}-{version}.fields.txt; each line is a dotted field path — grep by path prefix (e.g. grep '^spec\.' assets/schemas/kustomization-kustomize-v1.fields.txt) instead of reading the whole file (see the CRD reference table below).
  • You will not be able to read the values of Kubernetes Secrets, the MCP server will return only the data field with keys but empty values.

Cluster Context

If the user specifies a cluster name:

  1. Call get_kubeconfig_contexts to list available contexts.
  2. Find the context matching the user's cluster name.
  3. Call set_kubeconfig_context to switch to it.
  4. Call get_flux_instance to verify the Flux installation on that cluster.

If no cluster is specified, debug on the current context. Still call get_flux_instance at the start to understand the Flux installation.

Read the full file on GitHub · 257 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. yesterday First seen · 257 lines · 96 tokens per session scan A 5164c8ffc62f

Subscribe to this mod's changes

gitops-cluster-debug is a skill published in the GitHub repository devantler-tech/agent-plugins (2 stars, last pushed yesterday), licensed Apache-2.0. It adds 96 tokens to every session and 3,910 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to gitops-cluster-debug, differing in 19 lines, and is treated as a copy.

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