[CentOS] Centos 8 two network cards

Thu Jul 15 19:39:17 UTC 2021
Ken Smith <kens at kensnet.org>

Hi folks, I'm a bit confused about how to set up two network cards in 
different LANS in C8. I've done this multiple times in Centos6 and 
lower, but in the NetworkManager/systemd world I'm all at sea without 
any charts. (I'm sure there's a HKLM in there somewhere -sorry ;-)) and 
my Googlefoo is failing me this evening.

Via the GUI it will let me configure one device or the other but not 
both :-(

Anyway I want one NIC with IP and GW
and the other with IP and no gateway.

I've seen a method that removes NetworkManager and installs 
network-scripts then configures the ifcfg-eth0 and ifcfg-eth1 scripts. 
Interestingly the devices seem to be still called eth0 & 1 on this 
system which happens to be a VM. When I use this method the systemctl 
start network appears not to be able to find eth1.

Is there a recommended way to do this? I'd prefer to use 'approved' 
techniques rather than work arounds.

Any suggestions?



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