Re: [CentOS] Renaming NIC name in CentOS 7

Digimer Sun, 05 Oct 2014 13:21:41 -0700

To answer this question using my use-case;

I build HA clusters, and I want to make sure that physical port X on allnodes have the same device name. Biosdevname tries to address this, butdoesn't work all the time.

Further, in my case, I've got a minimum of six interfaces in each node,paired into three bonded groups. Having the device name reflect thepurpose in the node is very helpful 12~24 months down the road when Ineed to fix a network problem.


There *are* cogent arguments for renaming interfaces.

cheers

digimer

On 05/10/14 04:17 PM, George Kontostanos wrote:

I really don't get it. Why get into so much fuss just to rename your
interfaces????

On Sun, Oct 5, 2014 at 5:18 PM, Eliezer Croitoru <elie...@ngtech.co.il>
wrote:

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Hash: SHA1

Hey Mark,

You can use "ip" tools to do the trick.
For Ubuntu I wrote this upstart script that helps with it without
touching udev.
You can see it here:
http://www1.ngtech.co.il/paste/1175/

You can run this function at runtime and it will change the interface
name.

On CentOS you will need to find the right "spot" in boot to apply this
link.
Before NetworkManager and after udev.

All The Bests,
Eliezer

On 10/03/2014 04:12 PM, Richer, Mark (CIV) wrote:

All,

I am trying to understand better how you give an interface a more
descriptive name and get it all working without a reboot, if
possible.

We have 1G and 10G interfaces, and I’m trying to use names like
1G-internal, 1G-external, 10G-private, etc.  When I boot up, it’s
all fine, but if I add one I’m not sure if there is a way to avoid
the reboot? For example, I added the 10G interface names this
week.

Specifically, is there a way to change the network interface name
you see in ifconfig and nmcli connection without rebooting CentOS
7?

I changed the name in network-scripts. I tried to restart
NetworkManager.

I brought down the interface and tried to rename the file and bring
it up again, but it still retains the previous run-time setting
associated with the same UUID in the file.

Also I find that on all but one of the server on which I did this,
I can restart NetworkManager, but network.service is failing to
restart. Do I want both active? And if yes,  is this indicative of
a problem related to changing the interfaces that goes away (only)
by rebooting? For some reason, after doing this on several systems,
on only one I can restart network.service, but it also still shows
the old interface name.

thanks, Mark

MARK H RICHER, MS CS NPS-NCR Digital Forensics Lab IT Manager
Computer Science Department Naval Postgraduate School - National
Capital Region (NCR) 900 N Glebe Rd, Rm 5-182, Arlington, VA 22203
571.858.3254 (o) 571.303.9498 (m)
mhric...@nps.edu<mailto:mhric...@nps.edu>



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Digimer
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What if the cure for cancer is trapped in the mind of a person withoutaccess to education?

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Re: [CentOS] Renaming NIC name in CentOS 7

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