This tutorial has as purpose to teach how to install a hadoop cluster with 1 Name Node and 2 Data Nodes.
Hadoop was installed into 3 CentOS VMs (KVM) and this tutorial is a merge of 3 others, which you can find on the internet.
I describe here how to install and setup Gitlab-CE.
Let’s create a way to change CentOS7 hostname on AWS.
I wrote this collection of useful commands for us! Let’s remember it for eternity.
How to install Docker CE on CentOS.
To install docker from official repository, you should remove any previous installed version.