CentOS 7 minimal doesn’t get an IP address from DHCP on startup

I had install CentOS 7 minimal. The interface eno1677736 is up without an IP address when the OS starts up.

I restart the interface and it can obtain IP from DHCP server if I run this command:

ifdown eno1677736; ifup eno1677736

But if I reboot the OS, interface will lose the IP address.

My question is how to make the interface have an IP address automatically?

I tried configuring DHCP client as explained here.

Check that ONBOOT is set to yes in /etc/sysconfig/network-scripts/ifcfg-eno1677736.

And a quick fix in case it already is—although not the best one—would be to add ifdown eno1677736; ifup eno1677736 at the bottom of /etc/rc.d/rc.local.

Then save the file and make it executable:

chmod +x /etc/rc.d/rc.local

Now you’ll be running that command on every startup.