LINUXIP address, network card related

Change the IP address (#setup)

1. Input Vi/etc/sysconfig/network-scripts/ifcfg-eth0

2, the contents of the inside of the revision changed to

hwaddr=fc:4d:d4:2e:af:31
type= Ethernet
uuid= ad8ede6c-2e68-441c-8d8b-8e760fe38305
Onboot=yes
nm_controlled=yes
netmask=255.255.252.0
ipaddr= 10.10.3.95
gateway=10.10.0.1

Network restart

/etc/init.d/network restart

OK----ifconfig to see it.

Ifup eth0

Ifdown eth0

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Change DNS

1, vi/etc/resolv.conf

2. Input

NameServer 8.8.8.8
NameServer 1.2.4.8

VM cloning, eth0 into eth1 processing

Cause Analysis:

Many Linux distribution use Udev to dynamically manage device files and name them based on the device's information. For example, in

In Debian Etch, Udev identifies the network card during system boot, and the MAC address and network card name are recorded in Udev's rules

The script. VMware automatically generates the MAC address of the virtual machine. As a result, the virtual machine for the base system has recorded the virtual machine's network

The MAC address of the card corresponds to the NIC Eth0, and the MAC address changes in the cloned virtual machine, and Udev automatically corresponds the Mac to the network

Card eth1. And so on, Udev records the relationship of all identified Mac and Nic names, so each clone of the NIC name is automatically added 1.

In fact, the kernel only recognized a network card, and NIC name-related configuration has not changed any

Workaround:

1, Vi/etc/udev/rules.d/70-persistent-net.rules

Delete the line associated with Name= "Eth0″, and then change which line of eth1 corresponds to" Eth1″ to "Eth0″.

2, cp/etc/sysconfig/networking/devices/ifcfg-eth0/etc/sysconfig/network-scripts/

3. Service Network restart

LINUXIP address, network card related