[Cialug] CentOS 7

Wed Jul 9 11:47:36 CDT 2014

"names are fully automatic, fully predictable, that they stay fixed even 
if hardware is added or removed"

That sounds lovely. I'm accustomed to eth0 through eth<whatever> and 
like the brevity of the older names, but having to guess which one is 
which after replacing a bad interface has always been a pain.

Granted, it is rare that i have to replace an interface. In the past 10 
years i can think of twice that i've had to worry about it. Generally 
once a system is installed the devices retain their numbers; i think on 
Red Hat that by default the MAC of each interface gets written to 
/etc/sysconfig/network-scripts/ifcfg-eth* to ensure that they don't 
change.

So really, what problem is this trying to solve? I can see both sides of 
this one. It would be nice to have constant device names, but it is 
fixing such a rare problem that i'm not sure if it justifies the effort 
of changing it.

On 2014-07-09 at 11:09:22 David Michael wrote:
> Network device name changes definitely make sense for servers with
> more than one network interface.
> 
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux
> /7/html/Networking_Guide/ch-Consistent_Network_Device_Naming.html
> On Wed, Jul 9, 2014 at 11:03 AM, Scott Yates <Scott at yatesframe.com> 
wrote:
> > That's funny, I kind of got a VMS vibe too.  8)  Ahhhhh, the
> > memories.
> > 
> > 
> > On Wed, Jul 9, 2014 at 11:01 AM, Nathan C. Smith
> > <NSmith at hhlawpc.com>
> > 
> > wrote:
> > > Those command examples seem more powershell/MicroSofty/VMS-like in
> > > their verbosity to me.  If the people leading the way are saying
> > > it is better I will learn it.
> > > 
> > > 
> > > -----Original Message-----
> > > From: cialug-bounces at cialug.org [mailto:cialug-bounces at cialug.org]
> > > On
> > > Behalf Of David Champion
> > > Sent: Wednesday, July 09, 2014 10:55 AM
> > > To: Central Iowa Linux Users Group
> > > Subject: Re: [Cialug] CentOS 7
> > > 
> > > I had to install ifconfig on CentOS 7, it wasn't installed by
> > > default.
> > > 
> > > I know we can change it back, but I really don't understand the
> > > purpose> 
> > of
> > 
> > > renaming eth0 to enp<random stuff>... I think they just wanted to
> > > be
> > 
> > "cool"
> > 
> > > like the BSD kids.
> > > 
> > > -dc
> > > 
> > > On Wed, Jul 9, 2014 at 10:48 AM, Will <staticphantom at gmail.com> 
wrote:
> > > > My 2 cents. As someone involved with the development of 2 Arch
> > > > derivatives now I have found that once people start using
> > > > systemd they never really want to go back to using anything
> > > > else.
> > > > 
> > > > As for the comment about network going to eth0 to enp<random
> > > > stuff>
> > > > that can fixed if you desire.
> > > > 
> > > > -Will C
> > > > 
> > > > 
> > > > On Wed, Jul 9, 2014 at 11:41 AM, Scott Yates
> > > > <Scott at yatesframe.com>
> > > 
> > > wrote:
> > > > > Ish.
> > > > > 
> > > > > Looks like some aliases are in order.
> > > > > 
> > > > > 
> > > > > On Wed, Jul 9, 2014 at 10:40 AM, Jeffrey Ollie
> > > > > <jeff at ocjtech.us>
> > > 
> > > wrote:
> > > > > > Sorry to disappoint everyone, but Debian will be switching
> > > > > > to
> > > > > > systemd
> > > > 
> > > > in
> > > > 
> > > > > a
> > > > > 
> > > > > > future version. Personally I feel that systemd is a big
> > > 
> > > improvement...
> > > 
> > > > > > On Jul 9, 2014 9:10 AM, "Daniel A. Ramaley"
> > > > > > <daniel.ramaley at drake.edu>
> > > > > > 
> > > > > > wrote:
> > > > > > > Seconded. Wish i worked in a Debian shop instead of a Red
> > > > > > > Hat
> > 
> > one.
> > 
> > > > Red
> > > > 
> > > > > > > Hat is not a bad distro; i actually like it. I just like
> > > > > > > Debian
> > > > 
> > > > better.
> > > > 
> > > > > > > I've not yet played with RH 7.
> > > > > > > 
> > > > > > > On 2014-07-09 at 08:58:07 Scott Yates wrote:
> > > > > > > > Big thumbs up for Debian!
> > > > > > > > 
> > > > > > > > On Wed, Jul 9, 2014 at 8:55 AM, Nathan C. Smith <
> > > > 
> > > > NSmith at hhlawpc.com>
> > > > 
> > > > > > > wrote:
> > > > > > > > > Debian is still here for you, doing things the way you
> > > > > > > > > know
> > > > > > > > > and love.
> > > > > > > 
> > > > > > > __
> > > > > > > Daniel A. Ramaley
> > > > > > > Network Engineer 2
> > > > > > > 
> > > > > > > Dial Center 122, Drake University
> > > > > > > 2407 Carpenter Ave / Des Moines IA 50311 USA
> > > > > > > Tel: +1 515 271-4540
> > > > > > > Fax: +1 515 271-1938
> > > > > > > E-mail: daniel.ramaley at drake.edu
> > > > > > > 
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__
Daniel A. Ramaley
Network Engineer 2

Dial Center 122, Drake University
2407 Carpenter Ave / Des Moines IA 50311 USA
Tel: +1 515 271-4540
Fax: +1 515 271-1938
E-mail: daniel.ramaley at drake.edu