On 7/15/21 2:39 PM, Ken Smith via CentOS wrote:
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 10.100.0.2/24 and GW 10.100.0.1 and the other with IP 10.2.0.2/24 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?
https://linuxconfig.org/rhel-8-configure-static-ip-address
https://www.tecmint.com/set-static-ip-address-in-rhel-8/
Both of those go over the 3 basic ways to set up IP addresses manually (edit the script, use command line tool called nmcli, or use the curses based TUI tool called nmtui.
Thanks, Johnny Hughes