CentOS 6 Network Settings

Environment:

System hardware: VMware vsphere (cpu:2*4 core, memory 2G)

System version: centos-6.5-x86_64

Router Gateway: 192.168.1.1

Steps:

1. View the network MAC address
[Email protected] ~]# Cat/etc/udev/rules.d/70-persistent-net.rules

Displays the following information
# PCI Device 0x15ad:0x07b0 (VMXNET3)
subsystem== "NET", action== "Add", drivers== "? *", attr{address}== "00:50:56:94:04:3c", attr{type}== "1", kernel== "eth*" , name= "Eth0"

# PCI Device 0x15ad:0x07b0 (VMXNET3)
subsystem== "NET", action== "Add", drivers== "? *", attr{address}== "00:50:56:94:53:24", attr{type}== "1", kernel== "eth*" , name= "Eth1"

Eth0: Corresponding to the first card, eth1: On the second net card. Currently using Eth0 connection router, eth1 reserved (server is generally used to connect other hosts)

2. Modify the host name
[Email protected] ~]# vim/etc/sysconfig/network
　　

Open the file, modify the following and save

Networking=yes #使用网络
Hostname=centos #设置主机名称

3. Modify the NIC
[Email protected] ~]# Vim/etc/sysconfig/network-scripts/ifcfg-eth0
　　

Open the file, modify the following and save

Device=eth0 #对应第一张网卡
Type=ethernet
Onboot=yes #是否启动时运行
Nm_controlled=yes
Bootproto=static #使用静态IP instead of assigning IP by DHCP
Defroute=yes
Ipv4_failure_fatal=yes
Ipv6init=no
Name= "System eth0" #名称
hwaddr=00:50:56:94:04:3c #必须对应etho是的MAC地址 (/etc/udev/rules.d/70-persistent-net.rules)
Peerdns=yes
Peerroutes=yes
ipaddr=192.168.1.40 #指定本机IP地址
netmask=255.255.255.0 #指定子网掩码
gateway=192.168.1.1 #指定网关

4. Modify DNS
[Email protected] ~]# vim/etc/resolv.conf

Open the file, modify the following and save
NameServer 8.8.8.8 #GOOGLE的DNS服务器
NameServer 61.144.56.100 #指定当前城市最近的DNS服务器 (different cities, internet search)
NameServer 192.168.1.1 #指定经路由器上指定的DNS服务器

* Execute file read-only command, otherwise service restart, configuration is lost

Chattr +i/etc/resolv.conf

* Also note that between NameServer 61.144.56.100 is a space, instead of a "=" number, the equals sign configuration is wrong

5. Restart the network configuration
[[Email protected] ~] #service Network restart

　　

6. Restart

[[Email protected] ~] #shutdown-R now

7. View current IP Settings

[Email protected] ~]# ifconfig

CentOS 6 Network Settings