There are three network services that are essential for VMware Cloud Foundation deployment.
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There are three network services that are essential for VMware Cloud Foundation deployment.
Domain Name System (DNS) is required to provide both forward and reverse name resolution. The IP addresses of name servers, search domains, and hostnames of all the VMware Cloud Foundation VMs must be inserted into the Cloud Builder deployment parameter sheet. Forward and reverse DNS entries of any hostname that are indicated in the parameter sheet should be tested and retested for both forward and reverse lookups. Test the DNS entries using their Fully Qualified Domain Name (FQDN) and their short name (hostname).
A VTEP (VxLAN Tunnel End Point) is the software-based endpoint of a VXLAN connection that communicates over IP. The IP addresses can be provided via an IP address pool defined in the VMware Cloud Builder parameter file or via Dynamic Host Configuration Protocol (DHCP). Whenever a new cluster node is added to Cloud Foundation, a new tunnel endpoint is created which requires an IP address.
If DHCP is selected, place the DHCP server (or VM) on a reliable and well-maintained part of your infrastructure. The validation process checks to ensure that an IP address pool is being provisioned or that a DHCP server is available on the VXLAN network as specified in the parameter sheet. Validation fails if no IP address pool is provisioned or there is no DHCP response on the VXLAN network.
Time synchronization is critical to the VMware Cloud Foundation stack. All hosts and the Cloud Builder VM are synchronized to a reference time source before attempting to run the validation phase of the Cloud Builder process. Network Time Protocol (NTP) traffic is routed from client to source or it can travel over the same L2 network.