Ansible

One NFS export mounted by both vCenter and Proxmox, so a VMDK crosses the network once instead of twice

VMware to Proxmox with Ansible — Build the Shells Before You Move a Byte

Reading a vSphere estate with the dynamic inventory, mirroring its VLANs into Proxmox SDN, and rebuilding every VM as a diskless shell before a single disk moves. Why every VMware info module hides the one field the migration needs, why vlan_id is three different types, and why one NFS export mounted twice turns the cutover into a local read.

An Ansible control node calling the Proxmox API, with the VM being built having no connection back

Creating Proxmox VMs with Ansible — The Host You Are Building Does Not Exist Yet

The community.proxmox collection is an API client, not a configuration agent, and that changes the shape of every playbook that uses it. Where the tasks actually run, why proxmox_kvm declines to converge rather than updating, why proxmox_disk and proxmox_nic are where disk and NIC changes belong, and the undocumented return value you will end up needing.