Versions this guide is based on:

EVE Image Name Downloaded Filename Version vCPUs vRAM
extremexos-22.4.1.4 EXOS-VM_v22.4.1.4-disk1.qcow2 22.4.1.4 1 2048

Other versions should also be supported following bellow's procedure.

Step 1. Download one of provided Extreme KVM images:

https://stackingtool.extremenetworks.com/github/EXOS-VM_v22.4.1.4-disk1.qcow2

Step 2. Login as root in the EVE CLI using SSH protocol. Create the folder for exos image:

mkdir /opt/unetlab/addons/qemu/extremexos-22.4.1.4

Step 3. Upload the downloaded image to the EVE newly created directory (path /opt/unetlab/addons/qemu/extremexos-22.4.1.4) using for example FileZilla or WinSCP:

Step 4. Go to the newly created exos image folder and rename original file name to hda.qcow2.

cd /opt/unetlab/adons/qemu/extremexos-22.4.1.4/ 
mv EXOS-VM_v22.4.1.4-disk1.qcow2 hda.qcow2

Step 5. Clean and fix permissions:

/opt/unetlab/wrappers/unl_wrapper -a fixpermissions