Server Health Check Techniques

💥 This Linux Automation script will save you hours. Ever SSH into a server and think: “What is even going on here?” That’s why I made this: ✅ 1 Linux script to rule them all – Checks CPU, RAM, Disk, Network, Services — everything. Just copy → paste → run. Instant system health check. No more digging through 10 commands. ✅ Here’s what it does: • Shows top processes eating your RAM • Lists open ports & network interfaces • Highlights disk space issues • Prints running services • And more… #!/bin/bash echo "===== SYSTEM HEALTH CHECK =====" echo "Hostname: $(hostname)" echo "Uptime: $(uptime -p)" echo echo "== CPU Load ==" uptime echo echo "== Memory Usage ==" free -h echo echo "== Disk Usage ==" df -h --total echo echo "== Top Processes ==" ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head -10 echo echo "== Network Interfaces ==" ip a echo echo "== Listening Ports ==" ss -tuln echo echo "== Running Services (systemd) ==" systemctl list-units --type=service --state=running | head -20 echo "===== END =====" 💬 What’s your go-to script? Drop it below! #Linux #ShellTips #DevTools #Productivity #alias

A system is only as reliable as the components it runs on. Health checks are a must-have for resilient and observable software. They matter even more in microservices and distributed systems. One failing component can ripple across the entire platform. Health checks keep an eye on critical dependencies: ✅ Databases ✅ APIs ✅ Caches ✅ Messaging systems Setting them up in .NET is simple: ➜ AddHealthChecks() - bootstraps the health check system ➜ AddCheck<> - register built-in or custom checks ➜ Endpoint - expose results at configurable URLs like /health Optional: ➜ Use UseHealthChecksUI() from the HealthChecks.UI package. It gives you a clean dashboard and structured JSON for deeper insights. The [AspNetCore.Diagnostics.HealthChecks] repo offers ready-to-use checks for SQL Server, PostgreSQL, Redis, RabbitMQ, MongoDB, SignalR and more. Core pieces of the system: ↳ IHealthCheck - define custom validation logic ↳ HealthCheckOptions - control execution and output ↳ HealthCheckResult - report Healthy, Degraded, or Unhealthy Practical use cases: ➜ Validating internal or third-party endpoints ➜ Checking DB responsiveness ➜ Watching memory usage and GC ➜ Monitoring queues like RabbitMQ ➜ Ensuring disk space doesn’t run out Why this matters? ⇢ Get early warnings before failure spreads ⇢ Improve uptime and observability ⇢ Reduce MTTR ⇢ Build apps that recover gracefully and scale with confidence ✍️ What’s the most useful health check you’ve used? ♻️ Share this with your network and spread the knowledge. — 𝘌𝘭𝘭𝘪𝘰𝘵 𝘩𝘦𝘳𝘦, 𝘚𝘩𝘢𝘳𝘪𝘯𝘨 𝘪𝘯𝘴𝘪𝘨𝘩𝘵𝘴 𝘰𝘯 𝘮𝘰𝘥𝘦𝘳𝘯 𝘦𝘯𝘨𝘪𝘯𝘦𝘦𝘳𝘪𝘯𝘨, 𝘈𝘐/𝘔𝘓, & 𝘵𝘦𝘤𝘩. #softwaredesign #microservices #distributedsystems #technology

👉 It's 3 AM and your phone buzzes - users can't create orders. What if your app could warn you before things go out of control? Many dev teams see health checks as just another checkbox: ❌ "Just return HTTP 200 and we're good!" But real-world reliability means checking what actually matters: - Is your database reachable? - Is your Redis cache responsive? - Is RabbitMQ available with needed queues? - Are external APIs healthy? ✅ Good health checks don't just say, "I'm alive." ✅ They proactively alert you to what's broken - before your users do. That's the difference between surviving an outage and preventing one altogether. Next time you implement health checks, include your key dependencies - not just your own code. You'll sleep better, your users will thank you, and you'll finally have that one "it just works" system everyone wishes for. ▶️ Give this a try tomorrow — once you do, you'll wonder how you ever shipped without it. Do you implement health checks in your apps? Let me know in the comments 👇 ♻️ Follow me Anton Martyniuk and repost this to help others 👉 I've compiled 650+ hand-picked resources for mastering C#, .NET, ASP .NET Core, EF Core, and Microservices. Get PDF for free: ↳ https://lnkd.in/e5qnrvQs