EVE-NG is extremely strict about how files are stored. If your image doesn't show up in the "Add Node" list, it’s likely due to a naming error.

This is the gold standard for Cisco images. A CML Personal subscription provides legal access to IOSv, IOSv-L2, ASAv, and NX-OS images that are optimized for virtualization.

For lightweight testing, TinyCore Linux or pfSense images are excellent for adding hosts and firewalls without heavy resource consumption. 2. Proper Naming and Directory Structure

If you’ve made changes to a node and want to save it as a new base image, use qemu-img commit within the EVE-NG CLI to merge your temporary changes into the original file.

The actual disk image inside the folder must be renamed to a standard format like virtioa.qcow2 or hda.qcow2 . Refer to the official EVE-NG Naming Table for exact requirements. 3. Performance Optimization Techniques

To make your images "better" in terms of speed and resource usage, use these command-line optimizations: