Introduction: The Hidden Danger of Resource-Hog Containers

On my own VPS or in client projects, I've always relied on the flexibility and ease of deployment that Docker containers offer. However, this convenience sometimes comes with an overlooked risk: resource consumption. An uncontrolled container hogging CPU, memory, or disk I/O can destabilize the entire system. When this situation affected my other critical services and led to unexpected outages, I once again understood how vital detection and intervention mechanisms are.

Recently, I noticed a system-wide slowdown on the VPS I use for the backend of one of my side products. Even my SSH connections were responding with delays. At first, I thought there might be a network issue, but upon closer inspection, I realized the real problem was with one of the containers.…