It appears that this might not be an extension but rather a built in monitoring as I see it is a supported technology for out of the box monitoring. https://www.dynatrace.com/support/help/shortlink/section-technology-support#hypervisors
Maybe someone from Dynatrace can shed some light as to where in the UI you need to set up this integration, or if its indeed an extension that needs to be grabbed and applied.
There is currently no Nutanix specific monitoring. It's all OneAgent based.
There is however some investigations ongoing to expand the Nutanix monitoring with Dynatrace, so keep an eye open for blog posts and the hub in the next months.
Nutanix clusters monitoring is available on the Hub at https://www.dynatrace.com/hub/detail/nutanix-clusters/?query=Nutanix&filter=all and can be deployed immediately.
We’re looking forward for feedback https://community.dynatrace.com/t5/Feedback-channel/Nutanix-monitoring-extension-call-for-feedback/m...
Platform Extensions Services team.