12 free Command Examples to Check Memory Usage in Linux
A Linux server that shows almost no free memory is often perfectly healthy. The old way…
5 Commands to Protect Critical Apps From the Linux OOM Killer
Your database keeps disappearing overnight, and the only clue is a kernel line saying “Out of…
10 Tips to Harden SSH Access on Production Ubuntu Servers
Any Ubuntu server with port 22 open can start receiving SSH password guesses within minutes of…
Top 5 Podman Alternatives to Run Containers on Low-Resource Edge Linux Servers
Edge servers with 1 GB of RAM and a unreliable, slow uplink need more than a…
VCF on Dell Infrastructure: Matching Service Classes to Platform Capabilities
The constructor model can be implemented incrementally. The platform team does not need to automate the…
12 Ways to Use the dmesg Command in Linux to View and Troubleshoot Kernel Messages
Most people run dmesg once, see thousands of lines, and close the terminal. But that’s not…
How to Monitor Commands Executed by Linux Users in Real Time
Checking .bash_history after the fact, it only shows the commands a user typed, and that’s only…
Prometheus TSDB: Manage Data Storage and Retention on Linux
Prometheus stores every metric it collects in its own time-series database (TSDB). Over time, this database…
5 Ways to Check Remote Port Connectivity in Linux
You’ve just deployed a service, opened a firewall rule, or configured a reverse proxy, and now…
4 Tools to Find Which Linux Process Is Using Your Bandwidth
Your Linux server’s network is maxed out, and you have no idea what’s eating it, so…
How to Stop Linux Processes from Using Excessive CPU and RAM
A process suddenly consuming 99% of your CPU at 2 AM can turn a stable server…
How to Install Icinga 2 Monitoring Server on Rocky Linux 10
Icinga 2 is a free and open-source monitoring tool that helps you keep an eye on…
Upgrade Rocky Linux 9 to Rocky Linux 10.1
In this article, we’ll show you how to move from Rocky Linux 9 to Rocky Linux…
witr: A Tool That Explains Why a Linux Process Is Running
ps aux shows you what is running on your system, but witr goes a step further…
6 Open Source Tools to Monitor MySQL Performance in Linux
MySQL ships with decent built-in diagnostics, but when your database is slowing down under load, you…