In this project, I created 4 VMs on Ubuntu using VirtualBox:

• VM1 named master and VM2 named slave
• installed Nginx webserver and installed/configured MySQL in replication ( Master->Slave )
• installed/configured NFS file sharing service
• installed and configured WordPress so that any one of them can serve the same content
• created 2 more VMs ( Haproxy and Haproxy2 ) and configured Haproxy as load balancer between the two VMs with WordPress installed ( Active - Passive  and Active-Active )
• installed/configured Keepalived for high-availability

You can watch my short demonstration on YouTube below:

• Keepalived, Haproxy (Active-Passive) and Haproxy2 (Active-Active) --> https://www.youtube.com/watch?v=sj7Q-a_nNLM
• MySQL Replication and NFS sharing --> https://www.youtube.com/watch?v=4ek6ySFWwoQ

Thanks for watching!