MongoDB is a NoSQL database engine with full flexible index support and rich queries and here we want to show how to install MongoDB on CentOS 7 linux. It is an opensource database engine that stores data as Key-Value in Json format. Some big companies including Adobe, Facebook, Google, eBay, and Coinbase use MongoDB in […]

In this tutorial, we are going to show you how to setup an active-active three-nodes database replication with mariadb on centos 7 linux.active-active database replication means that two servers exchange update information bidirectional. also arbitrator is a server that will refree between two masters when there is a problem between them about who has lastest […]