Follow these steps to migrate a VMware VMDK image to Proxmox:

Step 1: Export the VMDK from VMware

First, you need to export the VMDK file from your VMware environment. You can do this by using the VMware vSphere client or VMware Workstation. Ensure you have the VMDK file accessible on your local machine.

Step 2: Install the qemu-img Tool

Proxmox uses the qemu-img tool to convert VMDK files to a format compatible with Proxmox (QCOW2 or raw). Install qemu-img on your Proxmox server if it is not already installed:

apt-get install qemu-utils

Step 3: Transfer the VMDK to Proxmox

Use SCP or any other file transfer method to transfer the VMDK file to your Proxmox server:

scp /path/to/your.vmdk root@proxmox-server:/var/lib/vz/images/

Step 4: Convert the VMDK to QCOW2 or Raw Format

Navigate to the directory where you uploaded the VMDK file on your Proxmox server and convert it using qemu-img:

cd /var/lib/vz/images/
qemu-img convert -f vmdk -O qcow2 your.vmdk your.qcow2

Alternatively, you can convert it to raw format:

qemu-img convert -f vmdk -O raw your.vmdk your.raw

Step 5: Create a New VM in Proxmox

Create a new virtual machine in Proxmox without a disk. Note the VMID of the new VM.

Step 6: Attach the Converted Disk to the New VM

Move the converted disk to the directory of the new VM and attach it:

mv your.qcow2 /var/lib/vz/images/<VMID>/vm-<VMID>-disk-0.qcow2

or for raw format:

mv your.raw /var/lib/vz/images/<VMID>/vm-<VMID>-disk-0.raw

Edit the VM configuration file to add the new disk:

nano /etc/pve/qemu-server/<VMID>.conf

Add a line like this, depending on your storage format and VM configuration:

scsi0: local:100/vm-100-disk-0.qcow2

Step 7: Start the VM

Start your new VM from the Proxmox web interface or using the command line:

qm start <VMID>

Conclusion

Your VMware VMDK image should now be running on Proxmox. You can further configure the VM as needed from the Proxmox interface.