First, install the required libraries.

yum -y install m4 automake autoconf make gcc libtool

Once these libraries have finished installing, you must install the server script. We will be using PocketMine.

wget http://downloads.sourceforge.net/project/pocketmine/linux/installer.sh

Chmod the server script to make it executable.

chmod +x ./installer.sh

Begin the install process. This may take up to 5 minutes to install.

./installer.sh

Next, start the server.

./start.sh

Voila. We just need to make sure that port 19132 is open so that people can join. To open it in CentOS 6, run the following commands.

iptables -A INPUT -p tcp -m tcp --dport 19132 -j ACCEPT
service iptables save
service iptables restart

If you are running CentOS 7, then you must use firewalld to open it. To do so, perform the following commands:

firewall-cmd --zone=dmz --add-port=19132/tcp --permanent
firewall-cmd --reload

Your server is ready to go! Happy building!