How to Migrate from RHEL 8 to CentOS 8
Live migration of a RedHat Enteprise Linux 8.0 to Centos 8.0
RHEL 8 to CentOS 8 migration guide.
If you tried a RHEL 8 Beta or you have a Developer’s License of RedHat Enterprise Linux 8 and you want / need to migrate to CentOS 8 for any reason (licensing, cost, hobby, …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 virtual web hosting management.
Requirements
Any of the below OSes and architectures:
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 the host.
Installing lxc
First of all, you have to install lxc …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 dedicated server was required, if you wanted to run 20 …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 users don’t know if and how they are supposed to …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 nature of services for which system will be utilized, we …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 which gives administrators control while empowering their users to provision …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. A distributed denial-of-service (DDoS) is where the attack source is …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 you will quickly see this regardless of how good the …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 is Crashing
/B/ Identifying the Problem
B/1 Examining the Logs
B/1.1 Page Corruption
B/1.2 …Read More
Make Samba Go Faster
Make Samba Go Faster
After installing a wired gigabit network in my house I tested the performance in the network using shares (Windows – samba installed centos 7). I got around 500-600MBit/sec in read speeds and about 600-700MBit/sec in write speeds. But why ?
After looking at the samba configuration file I saw …Read More
Fedora Linux – Use dnf Command With A Proxy Server
How do I access and use dnf command with a web proxy server on a Fedora Linux? How do I configure dnf to use a proxy server only?
Dnf repositories (“repos”) can be accessed through standard proxy servers such as Squid or any other proxy server. You need to configure the …Read More