[SOLVED] Official way to backup proxmox VE itself?

Great solution, but I prefer to use the proxmox backup client instead of tar. The equivalent solution would then look like this:
proxmox-backup-client backup etc.pxar:/etc var_lib.pxar:/var/lib home.pxar:/home root.pxar:/root --exclude='var/lib/vz' --exclude='var/lib/snapd' --exclude='var/lib/apt' --exclude='var/lib/dpkg' --repository PBS-IP:Backup
I've done it exactly how you show it, and it works very good, also it doesn't have disatvantage of being only backup (without retention). Thanks!