What is lockdown mode?
Normally we are using vcenter to manage multiple esx hosts. But if we required we can login to the esx host directly using vsphere client.Once we enabled lockdown mode, we cannot connect to the esx host using vsphere client.
When we trying to connect lockdown mode enabled esx, it will give below error message
In case of a vcenter unavailability, we can simply disable lockdown mode from the DCUI.