Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Linux, network config and deleting old eth's

Posted on 2013-12-12
4
337 Views
Last Modified: 2013-12-12
I have a situation where I created a new IP using the
'setup' command.  I created eth3, then I deleted the old eth2 by deleting all the characters in the  setup-Netowrk configuration-eth2   TUI

This did not work well, and I ca no longer perofrm a service network restart

I usually setup a network config using the setup command.  In this situation where I need to delete eth2, how should I do it

Thanks
0
Comment
Question by:Los Angeles1
  • 3
4 Comments
 
LVL 31

Accepted Solution

by:
farzanj earned 500 total points
ID: 39714943
It depends on your distribution.

For RedHat family, you can simply move the interface files to a backup folder or change the file name

Eg.

mv /etc/sysconfig/network-scripts/ifcfg-eth2  /etc/sysconfig/network-scripts/BKUP-ifcfg-eth2

Open in new window



This way it is really easy to revert back to your older settings but just changing the file name back.

To incorporate these changes, issue command


service network restart
0
 

Author Comment

by:Los Angeles1
ID: 39715292
Here are the ifcfg files

 ls -la ifcfg*
-rw-r--r--. 3 root root 235 Dec 12 11:27 ifcfg-eth2
-rw-r--r--. 3 root root 260 Dec 12 11:27 ifcfg-eth3
-rw-r--r--. 1 root root 254 Oct 10 10:48 ifcfg-lo

Open in new window


Here is the content of the ifcfg-eth2 file:

cat ifcfg-eth2
# Please read /usr/share/doc/initscripts-*/sysconfig.txt
# for the documentation of these parameters.
DEVICE=eth2
BOOTPROTO=none
NETMASK=255.255.240.0
TYPE=Ethernet
IPADDR=10.14.0.194
GATEWAY=10.14.0.1
IPV6INIT=no
ONBOOT=no
USERCTL=no

Open in new window


So I did a mv on the ifcfg-eth2 to a.a, and then I did a mv back to ifcfg-eth2, so the directory is still the same

 ls -la ifcfg*
-rw-r--r--. 3 root root 235 Dec 12 11:27 ifcfg-eth2
-rw-r--r--. 3 root root 260 Dec 12 11:27 ifcfg-eth3
-rw-r--r--. 1 root root 254 Oct 10 10:48 ifcfg-lo

Open in new window


The ifup eth3 still works, but I get this on the service network restart

service network restart
shutting down loopback interface                {OK]
Bringing up loopback interface          {OK]

Open in new window


So at this point the service network restart does nto bring up eth3 even though the ifcfg-eth3 file is in the directory
0
 

Author Comment

by:Los Angeles1
ID: 39715299
Sorry, that previous post was ment for another thread
0
 

Author Closing Comment

by:Los Angeles1
ID: 39715301
This worked well
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This is the error message I got (CODE) Error caused by incompatible libmp3lame 3.98-2 with ffmpeg I've googled this error message and found out sometimes it attaches this note "can be treated with downgrade libmp3lame to version 3.97 or 3.98" …
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question