Connect UPS to ESXi 6.7 standalone

[SommyJo]

In a small company there is a server Dell with installed an ESXi 6.7 Free Version.

It is a standalone server without connections to other servers and without other VMWare software.

There are 4 VMs: an old Win Server 2003; a Win Server 2016; a Win 10 Pro PC and an Ubuntu Server 18.04 LTS.

A UPS must be connected to manage the controlled shutdown.

The budget is limited and we are oriented towards APC Smart-UPS 1000/1500 VA.

It must support the Dell server, a PC, a switch and a small NAS Qnap. Obviously only for the time necessary to switch off everything (about 10/15 minutes).

For the management I wanted to propose NUT because Open Source, but I can't find one of its clients for ESXi 6.5, only for the previous versions.

Can I trust installing it or is there any other open source software?
Thanks in advance for any advices.

[sjesse]

Its never been really supported, but VMware at one point had a kb, but as you said it doesn't mention the latest versions.

VMware Knowledge Base

Your best bet if its possible is to have a physical box that's connected to the ups as well, and when that's shutdown have it run powercli commands to shutdown the vms and the hosts.

[berndweyand]

there is one caveat - in esxi free edition the api is readonly, so you can´t shutdown vms and host with powercli-commands.

you can open a ssh-session and powerdown with "vim-cmd vmsvc/power.shutdown <xxx>" and finally shutdown host with "/sbin/shutdown.sh && /sbin/poweroff"