Tag Archives: sysadmins

Alternatives to top and htop

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

Yesterday 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 […]

Using CentOS CR (Continuous Release) Repo

CentOS (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 […]

50 Top Server Monitoring & Application Performance Monitoring (APM) Solutions

August 6th 2017 Update: This list now contains 70 Top Server Monitoring & Application Performance Monitoring (APM) Solutions. Back in 2014, I compiled a list of the top 20 server performance monitoring solutions. Largely because I already had a list saved locally for my own reference. Sharing that list publicly was a great way to gain feedback and recommendations on […]

Does your Linux server need a RAM upgrade? Lets check with free, top, vmstat and sar.

Based on the output of ‘free -m’ on a 1GB VPS and taking into consideration the amount of swap space in use – details below – a RAM upgrade was necessary. Required was a minimum of 3GB of RAM multiplied by 2 = 6GB. This ensures that there’s adequate memory available for buffers/cache. There’s  This article will walk you though […]