SCP Linux – Securely Copy Files Using SCP examples

This post includes SCP examples. SCP or secure copy allows secure transferring of files between a local host and a remote host or between two remote hosts. It uses the same authentication and security as the Secure Shell (SSH) protocol from which it is based. SCP is loved for it’s simplicity, security and pre-installed availability. […]

Linux Commands frequently used by Linux Sysadmins – Part 1

What are some of the Linux commands used by Sysadmins and power users daily? In this article, I’ve listed 10 such commands frequently used. Suggestions, and feedback welcome. Also, see Part 2, Part 3, Part 4, and Part 5. Some people consider Linux to be a complicated operating system, geared toward expert users only. However, as […]

What is observability?

Leading software vendors have completed the expansion from traditional monitoring to full observability. However, there’s still a knowledge gap for customers interested in observability. As a result, some are left feeling a bit cloudy about observability for the cloud. Hopefully, this article will help add clarity to this topic. What is observability? Explained So, observability […]

Observability in 5 minutes. Plus, the best 20 observability software vendors

In just a little over a year, we’ve covered the future of APM (application performance monitoring) and the expansion of APM into observability. Followed by the race between software vendors to define observability. Most recently, we looked at the evolution of observability as shared by industry-leading software vendors. This article will be answering the following questions […]

“MySQL server has gone away” error – Solution(s)

The MySQL server has gone away error, means that MySQL server (mysqld) timed out and closed the connection. By default, MySQL will close connections after eight hours (28800 seconds) if nothing happens. However, in some cases, your web host, DBA, or app developer may have decreased this timeout setting, discussed below. MySQL server has gone […]

Memcache PHP Extensions for Memcached Caching Daemon

Memcached (Memcache Daemon) is a caching daemon designed especially for dynamic web applications to decrease database load by storing objects in memory. It is commonly used to speed up dynamic database-driven websites by caching data and objects in server memory to reduce the number of times the data source must be read. Memcached is free […]

Analyze Your Website’s TTFB (Time to First Byte)

Have you improved the load time of your websites and web applications recently? Or, maybe your web store or other web app is now slower to respond as you’ve added more features or due to data growth? The time it takes for your web applications to respond when users visit is more important than ever […]

Redis Monitoring: Redis-stat and other Redis tools

Popular web services such as Twitter, GitHub, Pinterest, Snapchat, StackOverflow, and others use Redis (Remote dictionary server) because of its ability to deliver small pieces of information VERY quickly. Similar to Memcached, Redis stores data in memory. When compared to Memcached, Redis can do a lot more. This post contains an updated list of the […]

PHP performance: oPcache Control Panels

OPcache is a PHP extension that improves PHP performance by storing precompiled script bytecode in shared memory, thereby removing the need for PHP to load and parse scripts on each request. The extension is built-in for PHP 5.5+. If you are looking to improve PHP performance, the first step should be to use PHP 7.4+, […]

Generating Secure Passwords for your Linux Server

Sysadmins will often have to set up new servers or harden existing server passwords during security audits. As a result, secure passwords have to be chosen for SFTP, admin panels, etc. Many practices make a server secure, but often neglected is using secure passwords. Notice that I didn’t include SSH or MySQL root passwords above. […]

How to Enable Unattended Upgrades on Ubuntu/Debian

Linux server security is of critical importance to sysadmins. One central part of keeping Linux servers secure is by installing security updates promptly. Too often, there are compromised servers on the internet due to pending security updates waiting for a manual update. On both Ubuntu and Debian, the unattended-upgrades package can be configured to perform […]