Linux top: Here’s how to customize it

The top command – referred to below as Linux top – 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 by Linux top command and the order […]

Nginx tuning tips: TLS/SSL HTTPS – Improved TTFB/latency

As of 30th June 2018, the PCI Security Standards Council requires that support for SSL 3.0 and TLS 1.0 be disabled. TLS 1.1 or higher must be used and TLS 1.2 is strongly recommended. In addition, starting this July, Google Chrome will begin to mark HTTP web sites as “not secure”. Over the past few years, […]

Free Linux Server Monitoring and APM solutions for SysAdmins

Today’s software applications require developers, testers, and SysAdmins to work together (DevOps) more seamlessly than ever before. A single line of code or poorly configured service can negatively impact your application’s performance, causing crippling slowdowns for end-users. This is where application performance monitoring (APM), comes in. APM is also referred to as application performance measurement or application performance management. […]

How to upgrade to PHP 7 on RHEL/CentOS

TL;DR = Upgrade to PHP 7 using Remi’s RPM repository – PHP Configuration wizard. Red Hat Enterprise Linux (RHEL) is a Linux distribution developed by Red Hat targeted toward the commercial market. Red Hat uses strict trademark rules to restrict free re-distribution of its officially supported versions, but still freely provides its source code. Third-party derivatives […]

PHP 5.6 EOL (End of Life) – PHP 7 Compatibility Check

Summary: PHP 7.3 benchmark, how to check your PHP scripts/apps for PHP 7 compatibility, upgrade to PHP 7 ASAP, confirm OpCache is enabled/monitored and some php.ini optimization tweaks.   PHP 5.6 and PHP 7.0 hits EOL this year! (2018) PHP 5.6 was first released back in 2014, with alpha 1 released in January 2014. Due to major performance […]

htop and top Alternatives: Glances, nmon

Previously we took a look at top, atop and indirectly (due to it’s popularity as top’s alternative) htop (the last screenshot on this page). But are there other alternatives worth looking at? As it pertains to system health and performance, this is largely a matter of preference regarding what data is most important to you. We […]

ATOP for Linux server performance analysis (Guide)

We’re all familiar with top, a real-time system monitor. Some prefer htop and previously I mentioned iotop for disk read/write monitoring. Lets looks at another popular tool for Linux server performance analysis: atop. Advantages of atop Atop is a ASCII full-screen performance monitor which can log and report the activity of all server processes. One feature I really like […]

Logagent: The Swiss Army Knife for Log Processing?

Guest post by Stefan Thies DevOps Evangelist at Sematext Group Inc. Dealing with log files or extracting data from various data sources is a daily task in the IT administration. Users ask about statistics or details of their technical or business operations. The relevant data is often present in log files, databases or message queues. Converting […]

Increase Performance and lifespan of SSDs & SD Cards

SSDs (solid-state drives) and SD (Secure Digital) cards have a limited number of writes before they wear out. To get the most out of this storage type lets investigate, then make a few adjustments to maximize the life of your SSDs and SD cards. Article refreshed from 3 years ago.   Using iotop to monitor and minimize […]

Linux roundup, for Linux Users and Sysadmins | Week 06

December 18th – January 15th roundup from around the web of all things Linux. Linux security, Linux tools, Linux articles, Linux guides and Linux news. – Subscribe. 01 | The mysterious case of the Linux Page Table Isolation patches – pythonsweetness.tumblr.com 02 | Amazon Kinesis: the best event queue you’re not using – instrumentalapp.com (sponsored) 03 | Linux page […]