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Cleaning up after Spectre and Meltdown: figuring out how badly the patch slowed down your servers
Now that you're (hopefully) all patched and safe from the Spectre and Meltdown vulnerabilities, how do you figure out how bad the performance hit on your Linux servers was? This is a quick guide to get you up and running with a multi-host collectd performance metrics monitoring system.
Tips for top: monitoring CPU load in Linux
Worried about overusing your CPU and memory or running unnecessary or rogue processes? top, with its rich, self-updating overview of the processes running on your system, is a great place to start.
Securing your Linux web server
A partial guide to Linux (LAMP) website security through the proper use of system groups, process isolation, and regular audits of your system resources.
Chroot: the magical healing powers of the original Linux virtualization tool
It's been around forever and loads of users haven't even heard of it. But chroot is the grandfather of Linux virtualization and it can save your life