Top 4 Essential Linux Monitoring Tools Every Sysadmin Should Know
This article introduces four widely used Linux monitoring utilities—iotop, htop, IPTraf, and Monit—explaining their core features and how they help quickly diagnose system performance and network issues for effective operations management.
Here are four highly used Linux monitoring tools that help quickly diagnose system issues.
1. iotop
If you want to know how much I/O resources a specific process is using, use iotop . Unlike iostat , which shows system‑level I/O, iotop monitors I/O per process.
2. htop
htop is an enhanced version of the traditional top with better visual representation, showing CPU usage per core, memory usage, and bar graphs. It also allows easier process termination without typing PIDs and can kill multiple processes at once.
3. IPTraf
IPTraf is a lightweight network traffic monitor, similar to a lightweight Wireshark . It can filter by port or protocol and provides detailed statistics such as packet‑size distribution.
4. Monit
Monit is a flexible monitoring tool that can watch processes, ports, files, and set dynamic alerts. It can automatically restart a crashed process and offers a lightweight web interface for managing one or many servers.
Hope this helps you monitor Linux systems more effectively.
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Programmer DD
A tinkering programmer and author of "Spring Cloud Microservices in Action"
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