To collect accurate usage data, vCloud Usage Meter requires specific configuration of the metered vCenter Server instances. To access the vCloud Usage Meter Web interface, you must allow access on the appropriate TCP ports.

Lookup Service

The vCloud Usage Meter appliance connects to a single sign-on lookup service before connecting to a vCenter Server. If the lookup service does not reside on the same vCenter Server as vCloud Usage Meter, enter the IP address of the single sign-on server when registering your vCenter Server in the vCloud Usage Meter Web interface. vCloud Usage Meter takes the default port number of the lookup service to be 7444.

If you do not set up the single sign-on lookup service connection properly, all vCenter Server collections fail with the following error message in the Notification tab of the Web interface: Unable to connect vCenter-Server-or-IP-address:7444.

vCenter Server Clusters

Service providers normally host customer and administrative virtual machines on a single vCenter Server. Tenants consume compute resources from the customer virtual machines, whereas service providers use the administrative virtual machines for internal purposes. To ensure accurate reporting to service providers and to VMware, you must apply a degree of segregation between customer and administrative virtual machines. The best practice is to create a dedicated cluster for both types. For example, create a Customer cluster to host all customer VMs and a Management cluster to host all VMs vital to the service provider business operations. The separation of VMs based on their function ensures that vCloud Usage Meter reports do not contain mixed usage data of customer and administrative VMs.

ESXi Licenses

After you create dedicated clusters for VMs based on their functions, you must assign proper ESXi licenses to the cluster hosts.

TCP Ports

vCloud Usage Meter uses predefined TCP ports. If you manage network components from outside a firewall, you might need to configure the firewall to allow access on the appropriate ports.

Table 1. Configuration of TCP Ports for vCloud Usage Meter
Port Source Target Purpose
443 vCloud Usage Meter vCenter Server vSphere API. If the default value does not work for you, you can change it.
8443 Client browser vCloud Usage Meter Used for the Web interface.