Specifications

Table Of Contents
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Verify that the load balancer in your existing vCenter Single Sign-On high availability deployment is
configured as described in VMware Knowledge Base articles 2034157 and 2033588 .
Procedure
1 Upgrade the First vCenter Single Sign-On Node in a High Availability Installation on page 85
Upgrade the first node in a vCenter Single Sign-On installation for high availability.
2 Upgrade an Additional vCenter Single Sign-On Server for High Availability on page 86
Upgrade an additional vCenter Single Sign-On node for an existing high availability vCenter Single
Sign-On installation.
3 Reconfigure the Load Balancer After Upgrading a vCenter Single Sign-On High Availability
Deployment to Version 5.5 on page 87
After you upgrade both nodes of a 5.1.x vCenter Single Sign-On high availability deployment to
version 5.5, reconfigure the load balancer.
4 Install or Upgrade the vSphere Web Client on page 89
The vSphere Web Client lets you connect to a vCenter Server system to manage your vSphere
deployment through a browser.
5 Upgrade vCenter Inventory Service Separately by Using Custom Install on page 90
You can use Custom Install to upgrade vCenter Single Sign-On, vCenter Inventory Service, and
vCenter Server separately to customize the location and configuration of the components.
6 Upgrade vCenter Server Separately by Using Custom Install on page 91
You can upgrade vCenter Server separately after installing vCenter Single Sign-On, and upgrading
Inventory Service.
Upgrade the First vCenter Single Sign-On Node in a High Availability
Installation
Upgrade the first node in a vCenter Single Sign-On installation for high availability.
NOTE vCenter Server 5.5 supports connection between vCenter Server and vCenter Server components by
IP address only if the IP address is IPv4-compliant. To connect to a vCenter Server system in an IPv6
environment, you must use the fully qualified domain name (FQDN) or host name of the vCenter Server.
The best practice is to use the FQDN, which works in all cases, instead of the IP address, which can change if
assigned by DHCP.
For more information about vCenter Single Sign-On, see “How vCenter Single Sign-On Affects vCenter
Server Upgrades,” on page 32 and the vSphere Security documentation.
Prerequisites
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Review Prerequisites for the vCenter Server Upgrade.
Procedure
1 In the software installer directory, double-click the autorun.exe file to start the installer.
2 Select vCenter Single Sign-On and click Install.
3 Follow the prompts in the installation wizard to choose the installer language, and agree to the end user
patent and license agreements.
4 Enter the password for the vCenter Single Sign-On administrator account.
5 Click Install.
The first high availability vCenter Single Sign-On node is upgraded.
Chapter 4 Upgrading vCenter Server
VMware, Inc. 85