How to do it...

1. First, add the Mesosphere repository:

$ sudo rpm -Uvh http://repos.mesosphere.io/el/7/noarch/RPMS/mesosphere-el-repo-7-1.noarch.rpm  

1. And now, install Mesos and ZooKeeper:

$ sudo yum -y install mesos mesosphere-zookeeper

1. At this point, you can start Mesos to do some basic testing. To start the Mesos master and agent (slave) daemons, execute the following:

$ sudo service mesos-master start
$ sudo service mesos-slave start

1. To validate the Mesos installation, open a browser and point it to http://<ipaddress>:5050. Replace <ipaddress> with the actual address of the host with the new Mesos installation.