🐳 Docker Memory Limits vs Host Reporting: Why cgroups v2 Changes Everything
Understanding why Docker containers can show different memory usage than the host system reports, and how cgroups v2 affects monitoring accuracy.
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Articles about Linux server monitoring, performance, and product updates.
🔍 Finding Runaway Processes When pidstat Shows Everything Normal
Sometimes the biggest CPU hogs hide in plain sight. Here's how to track down resource-hungry processes that don't show up in standard tools.
Read more →📁 The Small File Problem: When Applications Create Millions of Tiny Files
Log rotation scripts, cache systems, and backup tools can exhaust inodes whilst barely touching disk space. Here's how to spot and prevent it.
Read more →🧠 When MySQL's Memory Usage Doesn't Match the my.cnf Settings You Set
Why your MySQL process is using 8GB RAM when you configured 4GB buffer pools - and what other processes are quietly consuming memory alongside your database.
Read more →🔗 Why Your First Alert Shouldn't Be Your Last: Designing Failure-Proof Notification Chains
Single points of failure in alerting systems leave critical infrastructure blind. Here's how to build redundant notification paths that work when everything else fails.
Read more →🔍 When iotop Shows Everything Normal but Your Database Still Crawls
Why standard I/O monitoring tools miss the real bottlenecks that kill database performance, and how to spot them before users complain.
Read more →🏥 Building Application Health Checks That Actually Work in Production
Move beyond simple process checks. Learn how to build meaningful health checks that catch real application problems before your users do.
Read more →🔐 The SSH Tunnel Problem: Why Agent Authentication Beats Port Forwarding
SSH tunnels for monitoring access create more problems than they solve. Here's why proper agent authentication is the better approach.
Read more →⚖️ The 3MB Rule: Why Production Environments Need Zero-Dependency Monitoring
Large monitoring agents compete for resources with your actual workloads. Here's why dependency-free monitoring matters in production.
Read more →🧮 When ps Shows Different Memory Usage Than free: Understanding Linux Memory Accounting
Ever wondered why summing up process memory from ps doesn't match your free command output? Here's what's really happening with Linux memory management.
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