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?
This is for Debian, but it must be the same in CentOS. Being in Debian a
"beginner" who fled CentOS, this one operation (configuring second
network card) is the last only operation which I still use GUI for, not
command line tools or Better editing config files...
Start network manager editor (on Debian the command is:
nm-connection-editor)
Click Ethernet
click "+" choose "Ethernet" as connection type.
change name of new connection to "Wired connection 2"
and configure all parameters, make sure you choose correct ethernet
adapter in one of dro-downs.
I hope, this helps.
Valeri
Thanks
Ken
--
++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
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