VMware vSphere 4 Installation Guide download pdf (Page 78)

“vSphere Host Update Utility Support for Rolling Back ESX/ESXi Upgrades,” on page 80

“Roll Back an ESX Upgrade,” on page 80

“Roll Back an ESXi Update, Patch, or Upgrade,” on page 81

“Restore the ESX Host Configuration,” on page 81

“Restore the ESXi Host Configuration,” on page 81

Restore vSphere Web Access on ESX Hosts

For ESX hosts only, the vSphere Web Access service is disabled after you upgrade the host. If you have Web

Access enabled on the host, you must restore the service after the upgrade is complete.

vSphere Web Access is a user interface that runs in a Web browser and provides access to the virtual machine’s

display. The vSphere Web Access service is installed when you install ESX 4.0 or vCenter Server 4.0, but is not

running by default. Before you log in and start managing virtual machines, you must start the vSphere Web

Access service on your ESX or vCenter Server instance.

NOTE vSphere Web Access is not supported on ESXi hosts.

Prerequisites

You must have root privileges to check the status and run the vSphere Web Access service.

Procedure

1 Log in to the ESX host using root privileges.

2 Type the command to check whether the Web Access service is running.

service vmware-webAccess status

A message appears that says whether the service is running.

3 (Optional) If vSphere Web Access is not running, type the command to start Web Access.

service vmware-webAccess start

What to do next

You can now use vSphere Web Access to log in to the ESX host. See the vSphere Web Access Administrator's

Guide.

Evaluation Period Countdown

The ESX/ESXi 60-day evaluation period begins to count down immediately after the first time you power on

the ESX/ESXi machine.

The 60-day evaluation count down starts even if the host is licensed and you are not using evaluation mode.

For example, suppose you decide 10 days after the first power-on to switch from licensed mode to evaluation

mode. Only 50 days remain of the evaluation period. Sixty days after the first power-on, it is too late to switch

to evaluation mode because zero days remain of the evaluation period. During the evaluation period, if you

switch the ESX/ESXi machine from evaluation mode to licensed mode, the evaluation timer does not stop

counting down.

To prevent losing the availability of the evaluation mode, VMware recommends that before (or shortly after)

you power on your ESX/ESXi machine for the first time, decide whether you want to use evaluation mode.

One advantage of using evaluation mode is that it offers full feature functionality, which lets you try features

that you might not have yet without paying additional license costs.

vSphere Upgrade Guide

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VMware vSphere 4 Installation Guide Page 78