How upgrade ESXI node

[acmcool]

Does anyone know how to upgrade ESXI that's running VCSA appliance?

 

[realtomatoes]

try this: Easily upgrade ESXi 5.x to the latest ESXi 6.0 via CLI - ESX Virtualization

 

[gea]

Or simply download the ESXi .iso and boot from it, then select update (keeps a datastore intact)
Without CD/DVD drive, you can use Rufus (freeware tool) to create a bootable USB stick from an iso.

 

[msg7086]

Upgrade vCenter first, then your ESXi.

Boot the server with the ISO you downloaded, the same way as you make a fresh installation, just that when specifying which hard drive to install, you will be given choices to "upgrade ESXi, preserve datastore".