.agent/skills/server-management/SKILL.md
Server management principles and decision-making. Process management, monitoring strategy, and scaling decisions. Teaches thinking, not commands.
npx skillsauth add edpachecojr/sentinel server-managementInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Server management principles for production operations. Learn to THINK, not memorize commands.
| Scenario | Tool | |----------|------| | Node.js app | PM2 (clustering, reload) | | Any app | systemd (Linux native) | | Containers | Docker/Podman | | Orchestration | Kubernetes, Docker Swarm |
| Goal | What It Means | |------|---------------| | Restart on crash | Auto-recovery | | Zero-downtime reload | No service interruption | | Clustering | Use all CPU cores | | Persistence | Survive server reboot |
| Category | Key Metrics | |----------|-------------| | Availability | Uptime, health checks | | Performance | Response time, throughput | | Errors | Error rate, types | | Resources | CPU, memory, disk |
| Level | Response | |-------|----------| | Critical | Immediate action | | Warning | Investigate soon | | Info | Review daily |
| Need | Options | |------|---------| | Simple/Free | PM2 metrics, htop | | Full observability | Grafana, Datadog | | Error tracking | Sentry | | Uptime | UptimeRobot, Pingdom |
| Log Type | Purpose | |----------|---------| | Application logs | Debug, audit | | Access logs | Traffic analysis | | Error logs | Issue detection |
| Symptom | Solution | |---------|----------| | High CPU | Add instances (horizontal) | | High memory | Increase RAM or fix leak | | Slow response | Profile first, then scale | | Traffic spikes | Auto-scaling |
| Type | When to Use | |------|-------------| | Vertical | Quick fix, single instance | | Horizontal | Sustainable, distributed | | Auto | Variable traffic |
| Check | Meaning | |-------|---------| | HTTP 200 | Service responding | | Database connected | Data accessible | | Dependencies OK | External services reachable | | Resources OK | CPU/memory not exhausted |
| Area | Principle | |------|-----------| | Access | SSH keys only, no passwords | | Firewall | Only needed ports open | | Updates | Regular security patches | | Secrets | Environment vars, not files | | Audit | Log access and changes |
When something's wrong:
| ❌ Don't | ✅ Do | |----------|-------| | Run as root | Use non-root user | | Ignore logs | Set up log rotation | | Skip monitoring | Monitor from day one | | Manual restarts | Auto-restart config | | No backups | Regular backup schedule |
Remember: A well-managed server is boring. That's the goal.
development
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
tools
UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 9 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, flat design. Topics: color palette, accessibility, animation, layout, typography, font pairing, spacing, hover, shadow, gradient. Integrations: shadcn/ui MCP for component search and examples.
tools
Configure TOTP authenticator apps, send OTP codes via email/SMS, manage backup codes, handle trusted devices, and implement 2FA sign-in flows using Better Auth's twoFactor plugin. Use when users need MFA, multi-factor authentication, authenticator setup, or login security with Better Auth.
testing
Testing patterns and principles. Unit, integration, mocking strategies.