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Prepare the Operating System The OS of the Host must be prepared to host the &PRODUCT; Agent and run KVM instances. Log in to your OS as root. Check for a fully qualified hostname. # hostname --fqdn This should return a fully qualified hostname such as "kvm1.lab.example.org". If it does not, edit /etc/hosts so that it does. Make sure that the machine can reach the Internet. # ping www.cloudstack.org Turn on NTP for time synchronization. NTP is required to synchronize the clocks of the servers in your cloud. Install NTP On RHEL or CentOS: # yum install ntp On Ubuntu: # apt-get install openntpd Repeat all of these steps on every hypervisor host.