Solved

Linux, network config and deleting old eth's

Posted on 2013-12-12
4
344 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
[X]
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
  • 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

NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

Question has a verified solution.

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

Little introduction about CP: CP is a command on linux that use to copy files and folder from one location to another location. Example usage of CP as follow: cp /myfoder /pathto/destination/folder/ cp abc.tar.gz /pathto/destination/folder/ab…
In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

705 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