We’ve covered top, atop and indirectly due to it’s popularity as top’s alternative… htop (the last screenshot). But are there any others worth looking at? That was the question today in the ask.haydenjames.io Linux forum. This is largely a matter of preference regarding what data is most important to you as it pertains to system healthy […]
.IO TLD DNS issues and a day without Cloudflare
September 21, 2017 by Hayden James Blog LinuxYesterday morning, I started receiving down alerts for this blog. Pingdom’s alerts include the message: “Reason: Non-recoverable failure in name resolution”. Right from the start, to simplify troubleshooting, I wrongly removed Cloudflare since I had a similar issue with them a year ago and was able to resolve by temporarily removing. However, upon investigation the issue […]
PHP memory_limit – a *per-script* setting
September 18, 2017 by Hayden James Blog LinuxWhat happens when your web host blames PHP memory_limit setting for memory usage issues on a Linux web server. This happened recently and although PHP’s memory limit was set to 1GB (very high) that does not mean that scripts were using 1GB. Let’s take a quick look at understanding PHP’s memory_limit setting. PHP memory_limit is a per-script […]
Linux top: Here’s how to customize it
September 8, 2017 by Hayden James Blog LinuxThe top program provides a dynamic real-time view of a running system. It can display system summary information as well as a list of processes or threads currently being managed by the Linux kernel. The types of system summary information shown and the types, order and size of information displayed for processes are all user […]
Using CentOS CR (Continuous Release) Repo
August 27, 2017 by Hayden James Blog LinuxCentOS (Community Enterprise Operating System) is a Linux distribution that attempts to provide free, enterprise-class, community-supported computing platform functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL). CentOS is run by volunteers who work directly with Red Hat’s RPM source files and pushing them to CentOS for release. At times the project will fall behind […]