Agent Skills

k8s-troubleshoot

Kubernetes troubleshooting toolkit - search pods by labels and execute diagnostic commands inside containers. Use when user reports service errors, exceptions, crashes, timeouts, or needs to check logs, processes, network, or resource usage in K8s pods.

Installation
CLI
npx skills add https://github.com/XiaoMi/mone --skill k8s-troubleshoot

Installez cette compétence avec la CLI et commencez à utiliser le flux de travail SKILL.md dans votre espace de travail.

Dernière mise à jour le 4/28/2026

Kubernetes Troubleshooting Skill

A complete toolkit for diagnosing Kubernetes applications. Find pods by labels, then execute commands inside containers for deep diagnostics.

When to Use

  • User reports service errors, exceptions, failures, timeouts
  • Need to check application logs or process status
  • Diagnose network, memory, or disk issues
  • Keywords: error, exception, failed, timeout, crash, not working, logs, troubleshoot, diagnose, pod, container

Workflow

  1. Search pods - Find target pods by label selector
  2. Execute diagnostics - Run commands inside containers

Scripts

1. Search Pods

Find pods by label selector:

uv run python .claude/skills/k8s-troubleshoot/scripts/search_pods.py -l "app=nginx" -n default
Parameter Required Description
-l, --label-selector Yes Label selector, e.g., app=nginx or project-id=123,pipeline-id=456
-n, --namespace No Namespace (default: default). Use all for all namespaces

Output: JSON with success, podCount, pods (name, namespace, phase, containers)

2. Execute Command in Pod

Run diagnostic commands inside a container:

uv run python .claude/skills/k8s-troubleshoot/scripts/exec_pod.py -p "pod-name" -n default -cmd "tail -n 100 /root/logs/app.log"
Parameter Required Description
-p, --pod Yes Pod name
-n, --namespace No Namespace (default: default)
-c, --container No Container name (for multi-container pods)
-cmd, --command Yes Command to execute

Output: JSON with success, pod, namespace, command, output

Common Diagnostic Patterns

View application logs

uv run python .claude/skills/k8s-troubleshoot/scripts/exec_pod.py -p my-pod -n default -cmd "tail -n 100 /root/logs/app.log"

Check Nacos config (dubbo3 issues)

uv run python .claude/skills/k8s-troubleshoot/scripts/exec_pod.py -p my-pod -n default -cmd "cat /root/logs/nacos/config.log | grep nacos"

Check processes

uv run python .claude/skills/k8s-troubleshoot/scripts/exec_pod.py -p my-pod -n default -cmd "ps aux | head -20"

Check network

uv run python .claude/skills/k8s-troubleshoot/scripts/exec_pod.py -p my-pod -n default -cmd "netstat -tlnp"

Check disk and memory

uv run python .claude/skills/k8s-troubleshoot/scripts/exec_pod.py -p my-pod -n default -cmd "df -h && free -m"

Troubleshooting Tips

Issue Diagnostic Command
dubbo3 no provider Check /root/logs/nacos/config.log for nacos address
Service not responding Check process status with ps aux and logs
Connection issues Check network with netstat -tlnp
OOM errors Check memory with free -m