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Your production cluster is stable until a large CI/CD pipeline pushes a 4GB container image to a node with 50GB of disk space. Suddenly, the node repo...
You’re monitoring a high-traffic CI/CD runner or a file-syncing agent like rsync or unison. Suddenly, the service crashes with ENOSPC (No space left o...
You’re mid-deploy when the build fails with No space left on device, but df -h shows 20% free space. You dig in and discover the filesystem is out of ...
You receive an alert that your /var/log partition is 90% full, but the top-level du command shows only 20% usage. The missing space is likely "deleted...
You deploy a memory-hungry Java or Node.js service. Three days later, the monitoring dashboard shows the service is down, but the host is still up. Yo...
You’re staring at ps aux and seeing dozens of <defunct> entries. Your application isn’t crashing, but it’s leaking file descriptors and eventual...
You’re monitoring your production PostgreSQL instance and notice CPU spikes correlating with random query failures. A quick check of dmesg reveals the...
You have 50GB of free disk space on your application server, yet your web service suddenly starts returning 500 errors, and df -h shows plenty of room...
You’re staring at a Grafana dashboard showing a steady, linear climb in node memory usage over the last 48 hours. top shows no single process spiking,...
A junior sysadmin sets ulimit -m 1024 on a Java application to prevent it from consuming all RAM, but the app still OOM-kills the host because the ker...