Linux tutorials for systems administrators and users wanting to manage linux systems, covering various topics such as administration, security, performance tuning, upgrades, and maintenance.
MariaDB is a fork of MySQL that was created from some of the original developers of mysql after MySQL was purchased by Oracle. Upgrading to MariaDB offers a range of benefits and is a relatively simple upgrade. It has more active development then MySQL currently and is just developed by Oracle support as MySQL is. […]
ModSecurity is an open source monitoring system for web applications. It has powerful rule sets that allow you to protect applications from attacks. View the project for more details. It provides a ton of features such as: More than 16,000 specific rules, broken out into the following attack categories: * SQL injection * Cross-site Scripting (XSS) […]
mod_auth_token is a apache module that can be used to sign URLs, using this it can create time based urls that expire after a certain amount of time. It will prevent hot linking as the URLs will expire. This is particularly useful with video and image sharing. To get started you will need to have […]
Compiling Apache 2.4 from source is easy and allows for more customization later on. It also allows for control over where it is installed Install some required depedencies: yum install -y wget pcre-devel openssl openssl-devel expat-devel First get the latest version, at the time of writing this it is 2.4.25. The link to download the […]
Virsh is a command line executable to control existing virtual machines. It includes a number of commands to help manage KVM(kernel-based virtual machine) instances. It allows for easy command line management often remotely of virtual machines through SSH access. To enter the command shell over ssh just type the following: virsh From there you can type […]
Hot Clone is the term used to describe to completely clone a Linux server using r-sync across the network. This is useful in situations which you would like to create a clone with little to no downtime that would be typical of taking the original server offline. You can use this to perhaps move a single […]
PHP 7 has great performance benefits and combining that with Nginx when using php-fpm you can get seriously impressive load times! Compiling from source offers more control over where packages are installed and what modules are enabled. If you would like to read more about php-fpm, you can visit the project page Download the dependencies […]