Is it possible to change the management nodes to different hosts?

So you have more than 3 Harvester nodes in a cluster and you want to change (some of) the three management nodes to other nodes?

Yes

yeah @witty-jelly-95845 we created a cluster but want to move mgmt nodes to smaller ones to leverage the compute for workers unless it's possible to also have workloads on mgmt nodes

I'm not aware of a manual way of promoting/moving a management node but that doesn't mean it isn't possible, after all there must be a process that Harvester is using to do it. Testing with a few more nodes than I currently have is on my list.