How I Load Tested Moodle
I got a task: check how many concurrent users a moodle-based site can handle.
Recent Posts
Thoughts on Clustering. Part 1 - The Concept of a Cluster
A cluster means using several servers to run a single, integrated application. Each server in this setup plays its own assigned role. This article starts a s...
Converting a Parallels Virtuozzo container into a Parallels Bare Metal Server VM
Virtuozzo and Bare Metal Server are two commercial virtualization products from Parallels. They use different approaches to storing VM data.
Writing an image to a flash drive from the command line
Sometimes you need to make a bootable flash drive from an OS distro image or something else.
Usage of lftp to work with files on ftp server from Linux
lftp is a command line utility that allows you to exchange data with ftp and http servers. lftp has mirroring functionality that allows you to load or recurs...
How to get the Joomla! version from the command line
You can get the version of the Joomla CMS from the command line if you have no access to the admin panel. Run the following command from the site folder:
Package Installation Issues in Ubuntu 12.04
Even though Ubuntu 12.04 shipped with the LTS (long term support) label, looks like that long term is over. A lot of people have already run into problems in...
Optimizing Images for a Website on a Linux Server
Many of us have run into page speed testers complaining about unoptimized images more than once. Many of us have also ignored those warnings and settled for ...
Enabling the stats page in NginX
To enable the NginX stats page, add these lines to the nginx.conf config file, or the file where your sites are described. Add them inside the server { ... }...
Understanding the performance statistics from MySQL’s SHOW STATUS command
"SHOW STATUS;" in MySQL returns a large amount of technical data you can use to figure out memory usage, cache performance and resource distribution. Here’s ...
How to edit the Meta widget in WordPress
Whether a site needs user registration is a question that sparks a lot of debate.
Changing the log format in NginX
Many know logformat from Apache server config. The same thing exists for Nginx.
Varnish Configuration Review
There are plenty of articles about how to configure Varnish. Let me say right away that there’s no single correct approach to configuration. The more options...
Configuring Basic Authentication in Nginx
I will consider an example of setting up basic authorization in Nginx for a WordPress site. I need the authorization window to pop up for the following pages...
Create SSL certificate in Linux.
In continuation of the series of articles about SSL I would like to describe the steps for the appearance of certificates. I will not repeat the terminology....