A host upgrade is not entirely complete until after you have ensured that the host management, configuration, and licensing is in place.

After you upgrade an ESX/ESXi host, consider the following tasks:

View the upgrade logs.

For ESXi, you can use the vSphere Client to export the log files.

For a successful ESX upgrade, you can find upgrade log files at these locations on the host:


for upgrade from ESX 3.x to ESX 4.x.


for all upgrades.

You can run the following service console commands to get version and patch information:

vmware -v

vmware -l

esxupdate query

For an unsuccessful ESX upgrade, you can find upgrade log files at /var/log/vmware/ on the host.

If vCenter Server manages the host, you must reconnect the host to vCenter Server by right-clicking the host in the vCenter Server inventory and selecting Connect.

When the upgrade is complete, ESX/ESXi is in evaluation mode. Evaluation mode lasts for 60 days. You must assign an upgraded license to your product within 60 days after the upgrade. Use the License Portal and the vSphere Client to configure licensing.

On the VMware Web site, log in to your account page to access the license portal. From the license portal, upgrade your ESX/ESXi license. Use the vSphere Client to assign the upgraded license key to the ESX/ESXi host.

The host sdX devices might be renumbered after the upgrade. If necessary, update any scripts that reference sdX devices.

After the ESX/ESXi upgrade, you must convert LUN masking to the claim rule format. To do this, run the esxcli corestorage claimrule convert command in the vSphere Command-Line Interface. This command converts the /adv/Disk/MaskLUNs advanced configuration entry in esx.conf to claim rules with MASK_PATH as the plug-in. See the vSphere Command-Line Interface Installation and Reference Guide.

After the ESX/ESXi upgrade, 3rd-party agents are disabled but remain on the disk. To reenable them, you must reinstall them. You can use the vihostupdate vSphere CLI command to install 3rd-party extensions. See the Installation Guide or the Setup Guide.