Servers give you warnings before they fail. Most sysadmins performing Linux server monitoring miss them because they’re watching the wrong numbers. The metrics that actually matter are one level deeper: iowait instead of CPU percentage, active swap paging instead of memory usage, inode counts instead of just disk space. If you’re not tracking them, you’re […]
Articles tagged: server
watch Command in Linux: Real-Time Monitoring with Examples
The watch command runs any Linux command repeatedly at a set interval and displays the output full-screen, making it one of the quickest ways to monitor live system activity without writing a script. This guide covers all the key options with practical examples for real sysadmin use cases.
Linux Troubleshooting: These 4 Steps Will Fix 99% of Errors
I’ll admit, I hesitated a bit before writing this post. The whole point of this linuxblog.io and linuxcommunity.io forum is to bring together like-minded Linux users and professionals so we can troubleshoot, share ideas, and learn from one another. For a moment I thought, is it really productive for me to publish something that shows […]
Nginx tuning tips: HTTPS/TLS – Turbocharge TTFB/Latency
Nginx TLS tuning won’t fix a slow application, but it does cut handshake overhead and improve connection reuse, which shaves milliseconds off every HTTPS request. This guide covers the TLS, HTTP/2, and HTTP/3 settings I use to keep Nginx fast without giving up modern security. The goal is lower TTFB (Time To First Byte) and […]
Linux tmpfs for Speed and Temporary Storage
tmpfs lets you mount a filesystem entirely in RAM. Here is how Linux already uses it, how to create your own mounts, and where it actually makes sense to use one.
Linux: Guide to useradd, usermod, and groupadd
A practical guide to Linux user and group management using useradd, usermod, userdel, groupadd, gpasswd, and chage. Covers real-world examples, common mistakes, service accounts, and safe account removal.
Linux Network Bonding: Combine Network Interfaces
Two network interfaces are better than one. With Linux network bonding (also known as NIC bonding or link aggregation), you can combine multiple NICs into a single logical interface, gaining either increased throughput, failover redundancy, or both. It works on physical servers, VMs, and even home lab setups. I set this up on my home […]
Fail2ban on Linux: Protect Your Server from Brute-Force Attacks
Fail2ban watches your log files and automatically bans IPs that repeatedly fail authentication, protecting your Linux server from brute-force attacks on SSH, web servers, and more. This guide covers installation, jail configuration, testing, and practical tuning to get real protection instead of just running defaults.
nmap on Linux: Guide to Network Scanning and Discovery
A practical guide to nmap on Linux covering host discovery, port and service scanning, OS detection, NSE scripts, output formats, and real-world command combinations sysadmins actually use.
Linux Log Files: Guide to Reading, Searching, and Managing Logs
A practical guide to Linux log files: where they live, how to read and search them with tail, grep, and journalctl, how to manage log rotation, and a real-world troubleshooting workflow.
