Verify prerequisites

Before you start deployment, you must assemble the information required to assign values for each variable used by the playbooks. The variables are fully documented in the section Configuring the solution. A brief overview of the information required is presented in the table below.

Component	Details	Comments
Virtual Infrastructure	ESXi cluster of three machines vCenter 6.7U3 (CSI) vCenter 6.7U2 (non-CSI)	If you want HA you need three machines in the cluster and you need to deploy 3 masters, one per machine. The FQDN of your vCenter server and the name of the Datacenter. You will also need administrator credentials in order to create templates and spin up virtual machines.
VLAN with access to Internet (to pull Red Hat artifacts)	Portgroup connected to all machines in your ESX cluster	The playbooks install DHCP services on this VLAN so no other DHCP service should be running on this VLAN You will need one IP address for each VM configured in the Ansible inventory. For more information, see the section on Proxy configuration.
Routed subnet for use on the above VLAN
Frontend Network / VLAN		External IP address for each load balancer plus one for the frontend VIP
NTP Services	IP addresses of time servers (NTP)	Time services must be configured in your environment. The deployed solution uses certificates that are time-sensitive.
DNS Services	IP addresses of DNS servers	The DNS services deployed by the solution forwards unresolved requests to these DNS servers
Red Hat Network Subscription	Organization ID and authorization key Alternatively a username and password.	The subscription must contain valid licenses for both Red Hat Enterprise Linux 7.6 and OpenShift Container Platform 4