Symptoms
The IDPA version 2.0 to 2.1 upgrade fails because the ESXi host fails to enter maintenance mode.
Cause
The ESXi status of maintenance mode prevent the correct execution of the IDPA 2.1 upgrade
Resolution
Before starting the upgrade, use vSphere to verify the following on the ESXi hosts:
There are no HA agent alarms.
Check the Alerts tab from the vSphere Web Client:
The DRS cluster automation level is set to Fully Automated.
Procedure
Browse to the cluster in the vSphere Web Client navigator.Click the Manage tab and click Settings.Under Services, select vSphere DRS and click Edit. Expand DRS Automation.Select the Enable individual virtual machine automation levels check box.To temporarily disable any individual virtual machine overrides, deselect the Enable individual virtual machine automation levels check box.
Virtual machine settings are restored when the check box is selected again.
To temporarily suspend all vMotion activity in a cluster, put the cluster in manual mode and deselect the Enable individual virtual machine automation levels check box.Select one or more virtual machines.Click the Automation Level column and the automation level setting from the drop-down menu.
For information on how to verify these prerequisites, refer to VMware vSphere documentation about monitoring alarms and DRS cluster automation, respectively.
