Common HTTP Error codes and fixes
Here’s a list with the most common HTTP error codes and solutions for each one.
Error 500: Internal Server Error
Cause 1: Syntax error in .htaccess
Cause 2: Invalid files/directories permissions
Other causes
Errors 502: Bad Gateway & 504: Gateway Timeout
Error 503: Service Unavailable
Error 508: …Read More
Installing Virtualmin
What is Virtualmin?
Virtualmin is a powerful and flexible web hosting control panel for Linux and BSD systems. Available in an Open Source community-supported version, and a more feature-filled version with premium support, Virtualmin is the cost-effective and comprehensive solution to …Read More
Rsync: Copy files from and to your server
Rsync is a fast, versatile, remote (and local) file-copying tool.
The rsync command is a very handy and straightforward tool if you want to copy files/folders between your machine and a remote one.
Let’s see some use cases:
Copying local files/folders to a …Read More
Setting up Linux Containers (LXC)
What are LXCs?
Containers are a lightweight virtualization technology. They are more akin to an enhanced chroot than to full virtualization like Qemu or VMware, both because they do not emulate hardware and because containers share the same operating system as …Read More
Installing docker with Ubuntu 16.04 LTS, Mint 17 and CentOS 7
Installing docker with Ubuntu 16.04 LTS, Mint 17 and CentOS 7
A brief introduction to virtualization
Today we will learn installing docker with Ubuntu, mint and CentOS 7 Linux, Before the evolution of the concept of virtualization, to run one application one …Read More
Maintaining a clean Ubuntu system
How to maintain a “clean” Ubuntu
Ubuntu is (unfortunately) the most popular GNU/Linux distribution (I still prefer Fedora), as it has been the easiest to use for many years now, making it an obvious choice for every newcomer. As most new …Read More
Things to do after installing Ubuntu 16.04 LTS
Things to do after installing Ubuntu 16.04 LTS
To have a fully functional and smoothly running Ubuntu 16.04 Desktop users need to have some services application running before they start working with this fresh flavor of Ubuntu, although it depends upon …Read More
Considerations When Creating a Secure Cloud Environment
Considerations When Creating a Secure Cloud Environment
There is a definite change in the cloud security world. Organizations are deploying more cloud platforms to support an ever-growing user base. Still, the big question revolves around security – and how to protect …Read More
What is Openstack? A Quick OpenStack Tutorial
What is Openstack? A Quick OpenStack Tutorial
OpenStack – History and Introduction
OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a data center. All of the above components are managed through a dashboard …Read More
Protecting Apache Server From Denial-of-Service Attacks
Protecting Apache Server From Denial-of-Service Attacks
Denial-of-Service (DoS) attack is an attempt to make a machine or network resource unavailable to its intended users, such as to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet. …Read More
PHP Sessions in Memcached
PHP Sessions in Memcached
The moment a PHP application grows to run on more servers, normally people will see problems caused by PHP sessions. If the application is not persistent you are lucky and don’t care about this, but if not …Read More
MySQL InnoDB Corruption Repair Guide
MySQL InnoDB Corruption Repair Guide
This is a basic guide that goes over some of the methods you can use to deal with some of the most common InnoDB corruption issues, from start to finish.
SECTIONS
/A/ First Response
A/1 Initial Steps
A/2 If MySQL …Read More