Technical Definition of Server Monitoring
Server monitoring is the practice of tracking resource metrics on physical or cloud servers to ensure operational reliability, prevent crashes, and identify performance degradation. It involves monitoring operating system variables (such as CPU load, memory utilization, disk space, disk write/read throughput, network bandwidth rates, and active process execution states) using background agents.
Unlike external website checkers (which only query public endpoints), server monitoring collects metrics directly from the host operating system. This allows developers to identify internal issues like memory leaks or high disk usage before they cause public outages.
Core Metrics Collected
- CPU Load and Thread Queues: Verifying CPU usage and tracking process allocations.
- Memory Usage: Tracking active RAM, cache, and swap space usage.
- Disk Space & I/O: Monitoring disk capacity and write/read throughput.
- Network Bandwidth: Auditing interface rates to detect network issues or traffic spikes.