When my machine installs (CentOS 6.3) the two network cards are getting reversed. The PCI card is getting eth0 and the motherboard is getting eth1. I would like them in reverse order to keep things the same as they used to be.
How can I easily tell these two to reverse?
Generate the 70-persistent-net-rules with motherboard eth0 first then the PCI slot?
Thanks,
Jerry
Jerry Geis wrote:
When my machine installs (CentOS 6.3) the two network cards are getting reversed. The PCI card is getting eth0 and the motherboard is getting eth1. I would like them in reverse order to keep things the same as they used to be.
How can I easily tell these two to reverse?
Generate the 70-persistent-net-rules with motherboard eth0 first then the PCI slot?
Edit the existing one? It does persist through reboots, which is what you might expect from the name.
mark
Jerry Geis wrote:
Edit the existing one? It does persist through reboots, which is what you might expect from the name.
I'd like to automate- Editing is prone to mistakes. Its not just one machine.
So I'd like to automate it.
That's a lot more complicated, since each have their own MACs. Do you have a) some kind of centrally-controlled configuration, and b) are they all under DHCP, and only allow known MAC addresses to get IPs? If yes to both of those, you could write a script to make it, using those, and push it out.
On the other hand, you only need to do it once for each machine.
mark
On Sat, Jul 14, 2012 at 2:10 AM, Jerry Geis geisj@pagestation.com wrote:
Edit the existing one? It does persist through reboots, which is what you might expect from the name.
markMark
I'd like to automate- Editing is prone to mistakes. Its not just one machine.
So I'd like to automate it.
I don't know of convenient way to automate it. Is it possible to install the OS w/o the 2nd NIC? That way the embedded NIC will always be eth0. Later you can install the 2nd NIC which will get detected as eth1.
On 07/13/2012 04:23 PM, Jerry Geis wrote:
When my machine installs (CentOS 6.3) the two network cards are getting reversed. The PCI card is getting eth0 and the motherboard is getting eth1. I would like them in reverse order to keep things the same as they used to be.
How can I easily tell these two to reverse?
Generate the 70-persistent-net-rules with motherboard eth0 first then the PCI slot?
Thanks,
Jerry
https://alteeve.com/w/Changing_the_ethX_to_Ethernet_Device_Mapping_in_EL6_an...
In that, I edit the 70-persistent-net-rules file, but now I just remove it. In short;
1. Stop networking 2. move HWADDR value between ifcfg-ethX files. 3. Delete 70-persistent-net-rules 4. Run; 'start_udev' 5. Start networking.
On Fri, Jul 13, 2012 at 3:23 PM, Jerry Geis geisj@pagestation.com wrote:
When my machine installs (CentOS 6.3) the two network cards are getting reversed. The PCI card is getting eth0 and the motherboard is getting eth1. I would like them in reverse order to keep things the same as they used to be.
How can I easily tell these two to reverse?
Generate the 70-persistent-net-rules with motherboard eth0 first then the PCI slot?
I don't think you can always count on the detection order - so blindly automating a swap is probably a bad idea. Also, you are going to need the right MAC addresses in your ifcfg-eth? files to keep them nailed down.
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