Okey, I think I found the answer: http://docs.opennebula.io/5.12/operation/vm_setup/vcenter.html#vcenter-contextualization
Based on this documentation I made my setup, but it don’t work on Debian10 and Centos7 guests. Network = Yes also done in contextualization, but the network interface file (/etc/network/interfaces.d/filename.conf or /etc/sysconfig/network-scripts/ifcfg-XY.cfg) will not created after the VM is created. How can I debug this? In the /var/log I don’t see any useful thing.