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Tutorials

Step-by-step guides to help you get the most out of your cloud infrastructure. Learn how to deploy, configure, and optimize your applications.

How To setup LAMP stack on CentOS 7.Apache

How To setup LAMP stack on CentOS 7.

LAMP is short for Linux, Apache, MySQL or PHP which is an open source web development platform. It uses Linux as it’s operating system while Apache and

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How To Install Ruby on Rails on Ubuntu.Linux

How To Install Ruby on Rails on Ubuntu.

Ruby on Rails, often simply Rails, is an open source web application framework which runs on the Ruby programming language. It is a full-stack framework:

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How to Add Swap on Ubuntu.Linux

How to Add Swap on Ubuntu.

Swap space in Linux is used when the amount of physical memory (RAM) is full. If the system needs more memory resources and the RAM is full, inactive

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Small Dive Into Meteor.JS.Node.js

Small Dive Into Meteor.JS.

If you follow the latest JavaScript hypes, I am sure you have already heard about the awesomeness of meteor.js. If you have not yet, this is your chance.

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How To Create a High Availability HAProxy Setup with Corosync, Pacemaker &  Floating IPs on Ubuntu 14.04.Linux

How To Create a High Availability HAProxy Setup with Corosync, Pacemaker & Floating IPs on Ubuntu 14.04.

In this tutorial we will cover the build of a two-node high-availability cluster using the Corosync cluster engine, and the Pacemaker.

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How to Install and Use Docker on Ubuntu 14.04.Docker

How to Install and Use Docker on Ubuntu 14.04.

Docker is an open-source program that enables a Linux application and its dependencies to be packaged as a container such as configuration files, however,

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How to install, configure & use Jenkins on Ubuntu 14.04.Linux

How to install, configure & use Jenkins on Ubuntu 14.04.

Jenkins is an open source application that monitors execution of repetitive jobs, such as building a software project or jobs ran by cron. It’s written in

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Installing Latest Node.js on Ubuntu.Linux

Installing Latest Node.js on Ubuntu.

Node.js is a software platform that is typically used to build large scale (most frequently server-side) applications. It uses Javascript as its scripting

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How to protect your SSH server with Fail2Ban on Ubuntu.Linux

How to protect your SSH server with Fail2Ban on Ubuntu.

Every server that exists online, virtual or dedicated, has some purpose related to its existence. It could be used as mail server, file server, web server

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How To Set Up a Minecraft Server on Linux.General

How To Set Up a Minecraft Server on Linux.

Minecraft is popular sandbox indie game originally created by Swedish programmer Markus “Notch” Persson and later developed and published by Mojang. It is

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How To Setup Your Own VPN With PPTP on Linux (CentOS, Ubuntu, Debian).Linux

How To Setup Your Own VPN With PPTP on Linux (CentOS, Ubuntu, Debian).

A virtual private network (VPN) is network that extends a private network (i.e. LAN) across a public network, such as the Internet. It enables a

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How To Configure a Galera Cluster with MariaDB on Ubuntu 12.04.Database

How To Configure a Galera Cluster with MariaDB on Ubuntu 12.04.

Every online system use database to store its information. Keeping the data safe and secure is top priority for such system. There are a lot of possible

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Field notes / Latest

What production is teaching us.

Engineering notes from operating open infrastructure: the failures, design decisions, and upstream work that make open infrastructure better.

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Operations

What zero-downtime upgrades actually require

A field guide to sequencing control-plane, storage, and workload changes without turning maintenance into an outage.

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Storage

Designing Ceph failure domains for the failures you really have

Why rack diagrams, recovery traffic, and operational ownership belong in the same design review.

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Open source

Upstream first is an operating model, not a slogan

How production feedback becomes a smaller patch queue, healthier upstream projects, and fewer private forks.

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