What is Web server replication?

Replicating a web server machine is
the process of synchronizing two or more machines, so that they each
have the exact same files, at any given point in time.

Benefits of Web server replication

There are two primary benefits to web server replication:

1. High availability


2. Performance during high load times

Rsync

Rsync is a Linux shell utility that supports efficient copying of data
between two servers.

Unlike "normal copy" - Rsync only copies differential data (what just
got changed, instead of all the files). Another benefit of Rsync is
that it copies over SSH - so data is encrypted across the channel.

Rsync is one of the most popular methods to replicate web servers.
It's reliable, easy to setup and fast.

This guide, will walk you through the process of using Rsync to
replicate two web server machines.

Below are the needed setup steps

1. Install RSync


2. Select folder(s) to replicate


3. Create Rsync server config file


4. Installing & Running Rsync server


5. Fetching changes with the Rsync client


6. Setting Rsync client as a cronjob ¹

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