6.7

4 Ensure that the ESXi host management interface has a valid DNS resolution from the vCenter Server
and all instances of vSphere Web Client. Ensure that the vCenter Server has a valid DNS resolution
from all ESXi hosts and all instances of vSphere Web Client.
5 If you intend to use Active Directory as an identity source, verify that it is set up correctly. The DNS of
the vCenter Single Sign-On Server host machine must contain both lookup and reverse lookup
entries for the domain controller of the Active Directory.
For example, pinging mycompany.com should return the domain controller IP address for
mycompany. Similarly, the ping -a command for that IP address should return the domain controller
host name.
Avoid trying to correct name resolution issues by editing the hosts file. Instead, make sure that the
DNS server is correctly set up.
6 Before the upgrade, select the domain user to use for upgrading vCenter Server. Give that domain
user exclusive administrator permission for vCenter Server, not as part of a Windows Administrators
group.
Your network is ready for vCenter Server upgrade.
What to do next
Prepare other components of your environment.
Verify Load Balancer Before Upgrading vCenter Server
If you are using a load balancer for high availability for vCenter Single Sign-On or
Platform Services Controller, you must verify that it is supported and configured correctly before
upgrading to vCenter Server 6.7.
In environments with less than four vCenter Server systems, VMware typically recommends a single
Platform Services Controller instance and the associated vCenter Single Sign-On service. In larger
environments, consider using multiple Platform Services Controller instances, protected by a network load
balancer. The white paper vCenter Server 6.0 Deployment Guide on the VMware website discusses this
setup. For current information on maximums, see the Configuration Maximums.
See http://kb.vmware.com/kb/2112736 for vCenter Single Sign-On high availability compatibility matrix.
Prerequisites
Procedure
1 Review the vCenter Server 6.0 Deployment Guide documentation for load balancing information.
2 If your load balancer is not supported, replace it with a supported load balancer.
3 Verify that the load balancer is correctly configured based on recommendations in vCenter Server
Deployment Guide.
Prepare ESXi Hosts for vCenter Server Upgrade
Before upgrading to vCenter Server 6.7, you must prepare your ESXi hosts.
vCenter Server Upgrade
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