Thanks Michael, I have no more time today, so I have reinstalled my old drive.
Today, I have understood a few things:
Don’t install NS over Centos
For a clean install, remove prior everything on the drive (that was why I used the Centos install)
After the config restore, users are there, but LDAP should be reactivated to see them
Next time, I will do all that again, but with the re-installation of the applications before the data
See you next time!
If you’re as noob as i am (a stated lot of times before), using the NethServer ISO leads to a much more predictable experience, on different kind of situations: the partition table and schema is known, and a lot of solutons are applicable without too much hassle.
IDK if the Backup configuration also take consideration of the partitioning/mountpoints or only the filesystem paths. Which a skilled sysadmin can change, as someone did on this issue when the size of the disk was… too small.
Back this morning with the will to do something nice and don’t deceive @pike, I could reinstall everything fresh and clean. Here is how:
1 Fresh backups of configuration et data
2 Wipe new drive
3 Fresh default install of NS7 from the ISO
4 yum update and reboot
5 Restore config, without the packages
6 Remove and reinstall account provider to local ldap, all my accounts and groups are back
7 From the Software Center, reinstall all applications I need, reboot
8 Restore data, reboot
9 Yeah!!!
I installed extra repositories due to php version issue for Nextcloud, but the present install seems to work fine without them. @pike thanks again for your time. Now I know how to do disaster recovery. I hope my experience can help others.