Comment Re:The writing is on the wall (Score 2) 31
I've used Proxmox for years, both professionally and for my home lab. It runs Debian under the hood and is rock solid.
Right now I'm only using it privately so my experience in the enterprise is limited to earlier versions. There are additional components nowadays for automated backups and the like, which are overkill for my setup.
At the time the web management tool was perfectly fine for a small setup, but it didn't have the sophisticated look and feel of the vCenter approach with dedicated ESXi hypervisors on each physical host. Rather it has a full Debian distro on each physical node which make use of the Linux networking layers to create bridges into each VLAN you need. So you are fully capable of going into that layer and messing things up HHHHH configuring things manually if you like. The physical nodes are clustered together using Corosync.
A nice thing about Proxmox is that you can program directly against its public API and create your own management or orchestration layer if you like. In fact the web management tool uses that API to configure the nodes, manage VMs etc. One problem here is that the semantics of managing VMs and containers aren't a one to one match, muddying the waters a bit. Maybe this has changed in the meantime.