CentOS

Hi,

I'm new to CentOS, so I have an old mac book pro 5,3 and I clean installed CentOS 7 on it but my network interface is not detected. In the installation when I tried to configure the network I had no ethernet interfaces and no option to add one. I completed the install and now I'm trying to get my network interface up.

Because I don't have an internet connection I need to download the *rpm files and copy them over to the CentOS machine.
I managed to run the rpm -uVh command successfully but I cannot run any yum commands.

The output from lspci -nn | grep -i net is:

00:0a.0 Ethernet controller [0200]: NVIDIA Corporation MCP79 Ethernet [10de:0ab0] (rev b1)
04:00.0 Network controller [0280]: Broadcom Limited BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b] (rev 01)

I searched the net and found the elrepo packages.
I also needed to install a kernel rpm before I can run the elrepo packages.

When I run sudo yum install kernel or any yum command I get the bellow output:

Loaded plugins: fastestmirror, langpacks
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7 ... nfra=stock error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; Unknown error"

I've tried everything but I can not run yum because I don't have a network interface.

When I run ip link I get the below info:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:44:45:46 brd ff:ff:ff:ff:ff:ff
3: virbr0-nic: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN mode DEFAULT qlen 1000
link/ether 52:54:00:44:45:46 brd ff:ff:ff:ff:ff:ff

I'm no LINUX admin so if you provide commands please indicate the directory and file names, if I need to amend them.

I can't believe you cannot run yum commands if you not connected to the internet.

All help appreciated.

Thanks in advance.

Well you will have a kernel package installed now or the system wouldn't boot.

Download the latest kmod-forcedeth package from ELRepo and put it on a USB stick or otherwise transfer it to your system. Then run yum --disablerepo=\* install /path/to/kmod-forcedeth*.rpm having modified /path/to/ to point to the directory containing the rpm file that you downloaded from ELRepo.

If you installed CentOS 7.4 and uname -r says 3.10.0-693something then you need to use the latest kmod-forcedeth. If you installed an older CentOS version then you may need to download older kmod-forcedeth packages until you find the one that works with your kernel (it'll refuse to install if it's the wrong one so if it installs, it's the right one).

Thank you Trevor for your reply.

I followed your instructions and now after reboot the wired network is visible and I'm on the net.