No network after migrating to a new server

[sobal]

Dear all Centos fans,

Today my dedicated server was migrated to a new hardware. SSDs from old taken and put inside a new one. Due to the fact, that both rigs are almost the same in specs, hardware was not a problem. But the software is.

Problem: can't get outside the box

Technical staff at my dedicated server owner company mentioned to remove /etc/udev/rules.d/70-persistent-net.rules and reboot the server. On Centos 7 there is no such a file, so it was not an option.

What I tried:
Deleted all old config files from /etc/sysconfig/network-scripts
Rebuild new ones using nmtui
Restarted NetworkManager

Still, the server is closed in it's own box with no way out. Please. help. What may be important is below:

nmcli d

Snap4.png (33.15 KiB) Viewed 456 times

ip add show

Snap5.png (101.66 KiB) Viewed 456 times

What should I do? Please, help.

[TrevorH]

Your interfaces have no ipv4 address or any sort of configuration. If you removed the old config files, did you remember the details of the things like IPADDR=/NETMASK=/GATEWAY= from those and put them into the new config? Did you save copies of the old files?