Linux 7 Configuring a Network Interface: Difference between revisions

From NovaOrdis Knowledge Base
Jump to navigation Jump to search
Line 37: Line 37:


=Configure a Network Interface after Cloning a VM Image=
=Configure a Network Interface after Cloning a VM Image=
You want to generated a different Mac address when cloning an image, to avoid collisions.
If "HWADDR" is set pointing to the old hardware address, we want to remove it from the cloned configuration file, because if it stays there, and the hardware address is not available, the interface won't start.

Revision as of 20:04, 13 March 2017

External

Internal

Overview

The configuration files corresponding to the network interfaces are located in /etc/sysconfig/network-scripts.

ifcfg-eth0 example: 

DEVICE="eth0"
NAME="eth0"
TYPE="Ethernet"
ONBOOT="yes"
IPADDR="192.168.1.9"
NETMASK="255.255.255.0"
PREFIX="24"
GATEWAY="192.168.1.1"
DNS1="192.168.1.1"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_PRIVACY="no"


Configure a Network Interface after Cloning a VM Image

You want to generated a different Mac address when cloning an image, to avoid collisions.

If "HWADDR" is set pointing to the old hardware address, we want to remove it from the cloned configuration file, because if it stays there, and the hardware address is not available, the interface won't start.

Retrieved from "https://kb.novaordis.com/index.php?title=Linux_7_Configuring_a_Network_Interface&oldid=18060"