I ran into some serious issues with my Proxmox cluster—one node was sitting at 95% RAM usage, despite running just a single VM with 1GB of RAM. After digging into it, I found that ZFS was the culprit, hogging memory. To fix this, I reinstalled Proxmox on all three nodes in my cluster while keeping my web servers online throughout the process. Now, the system’s running smoother and ZFS isn’t causing problems anymore.
