Could any one tell me how to assign IP to a linux box.

Linux and Unix-Like Red Hat
1

Hi All,

Could any one please help me how to assign IP to a linux box permanently.

IP should not be changed even after Rebooting the machine.:b::b::b:

2

Depends on the flavour of Linux you are using:
RedHat/CentOS: modify the file /etc/sysconfig/network-scripts/ifcfg-eth0
Debian: modify the file /etc/network/interfaces

1 Like
3

That worked up to RedHat 6.0. The next version of RedHat that I used is 6.4. On 6.4 it is now /etc/sysconfig/network-scripts/ifcfg-em1. I do not know which release between 6.0 and 6.4 started this.

After you make the change to your network file you can do:

service network restart

to set the new IP address without an immediate reboot. Or just reboot if you want.

4

RHEL 6.3 which we have is still using ifcfg-ent0

Robin

5

FWIW, In RHEL 6.5 here, it is still ifconfig /etc/sysconfig/network-scripts/ifcfg-eth[0-9] , so maybe some installs have different names of the network devices ( ifconfig | awk '{print $1}' RS= ) depending on the types of NIC's installed..

1 Like
6

According to the documentation, Appendix A "Consistend Network Device Naming" eth[0123...] are replaced by em[0123...] with RedHat Linux Enterprise 6.x.
Maybe the updates are responsible for the different naming schemes: "Upgrades from Red Hat Enterprise Linux 6.0 to Red Hat Enterprise Linux 6.1 are unaffected, and the old eth[0123�] naming convention will continue to be used."

1 Like
7

It also says this:

https://access.redhat.com/site/documentation/en-US/Red\_Hat\_Enterprise\_Linux/6/html/Deployment\_Guide/appe-Consistent\_Network\_Device_Naming.html

1 Like
8

I had to sign in as a ReHat customer to see that page. All it was is a link to here.

We are migrating to an all Dell environment. The only systems I have installed 6.4 on are PowerEdge servers and Optiplex workstations.

9

work for me

  1. service NetworkManager stop
  2. chkconfig NetworkManager off
  3. service network start
  4. chkconfig network on
  5. edit
    vi /etc/sysconfig/network-scripts/ifcfg-??? put here your interface

DEVICE=??your interface
BOOTPROTO=static
IPADDR=x.x.x.x
NETMASK=255.255.255.0
GETEWAY=x.x.x.x
ONBOOT=yes

and save

  1. i also added dns in /etc/resolv.conf
    nameserver x.x.x.x
    nameserver x.x.x.x

  2. service network restart