Linux Configure network IP addresses, gateways, and DNS

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The Linux command line permanently modifies the IP address, gateway, and DNS.

1. Modify the IP address

First check your host card number and name, related information under/etc/sysconfig/network-scripts/.

You can see that I have 2 network card, the first block is the Ethernet physical network card, number 0, if you have more than one network card, the number is 0, 1, 2, 3 ...; the second network card is a loopback network card, generally do not need to set.

Use VIM to edit you need to set the IP network card, here I can only modify Ifcfg-eth0, look at the graph, not much explanation, the previous state is Bootproto set to DHCP when the wording.

Vim/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0 #网卡名称
Bootproto=static #获取ip的方式 (STATIC/DHCP/BOOTP), not explained
hwaddr=00:0c:29:b5:b2:69 #MAC地址
ipaddr=12.168.1.5 #IP地址
netmask=255.255.255.0 #子网掩码
network=192.168.1.0 #网络地址
broadcast=192.168.0.255 #广播地址
Nboot=yes #启动设备

2. Modify the Gateway

Vim/etc/sysconfig/network

Add a gateway Message

gateway=192.168.1.1

3. Modify DNS

Vim/etc/resolv.conf

Add DNS information to

NameServer 192.168.1.1

4. Reload the network configuration

/etc/init.d/network restart

Linux Configure network IP addresses, gateways, and DNS