Turn off swap
Swapping is costly for disk I/O and not every Linux server needs to have a swap partition and to start swapping. For instance, MySQL servers have more than enough RAM available to do their work. Yet, when a swap partition is enabled Linux starts swapping, and that degrades MySQL database performance.
Redirect HTTP to HTTPS
Monit monitoring on Ubuntu 14.04 VM on Hyper-V
In this post you'll learn about setting up a Monit monitoring service for your websites and services. Monit is a free and open source service monitoring application which can perform various event-based actions. Monit can send email notifications, restart a service or application, or take other responsive actions. We set Monit up on a Ubuntu 14.04 VM, built on Hyper-V. And we use Monit to monitor several websites, and send out notifications on downtime.
How to restore a deleted Open-Xchange context?
How to restore, or recover, an accidentally deleted OX context. If you've accidentally deleted an Open-Xchange context (contextid), then that is bad... Here is how to recover a deleted OX context and filestore... Assuming you make backups of course.
Convert decimal to hex in Bash?
A quicky for my archives: convert decimal to hex in Bash, and convert hexadecimal to decimal, in Bash. In mathematics and computing, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0-9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a-f) to represent values ten to fifteen. If you want to convert hexadecimal values to decimal and decimal values to hexadecimal, here's how. All on the bash prompt...
Sysadmins of the North goes global!
How to flush MySQL query cache from time to time
Minify JavaScript, CSS and compress images
Optimizing, minify and compressing JavaScript and CSS files, the easy and fast way? With YUI Compressor on the Windows-, Linux- and macOS command line of course! Compacting HTML, CSS, and JavaScript can speeds up your website because of smaller and faster downloads, parsing, and execution time.
Test SMTP Authentication and StartTLS
Check, repair and optimize MySQL tables with mysqlcheck
MySQL's mysqlcheck is a command line table maintenance program for MySQL. It checks, repairs, optimizes, or analyzes MySQL tables. Very handy for automated performance optimizations of MySQL databases and tables. In this post I'll show you how to use mysqlcheck to optimize all MySQL tables using a cronjob.