For Cloud Servers
If you have restored a Linux server in the Cloud Panel from an image backed up under Infrastructure > Images, but it cannot be accessed from outside, the cause may be a (now obsolete) set of rules for naming the network interfaces. You can check whether this is the case for you as follows:
Connect to your server via KVM console.
Check if the file /etc/udev/rules.d/70-persistent-net.rules exists:
[root@localhost ~]# ls -l /etc/udev/rules.d/70-persistent-net.rules -rw-r--r-- 1 root root 422 Jan 4 11:20 /etc/udev/rules.d/70-persistent-net.rules
If yes, delete the file and restart the server:
[root@localhost ~]# rm -f /etc/udev/rules.d/70-persistent-net.rules
[root@localhost ~]# reboot