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                                                            方式一:vi /etc/sysconfig/network-scripts/ifcfg-eth0
 编辑网卡信息
 DEVICE=eth0
 TYPE=Ethernet
 ONBOOT=yes
 NM_CONTROLLED=yes
 BOOTPROTO=static
 IPADDR=103.147.1.100
 NETMASK=255.255.255.0
 GATEWAY=103.147.1.1
 IPV6INIT=no
 DNS1=223.6.6.6
 DNS2=114.114.114.114
 ----------------------------------------
 加入以下IP地址
 IPADDR1=103.147.1.101
 IPADDR2=103.147.1.102
 -------------完成后如下↓---------
 DEVICE=eth0
 TYPE=Ethernet
 ONBOOT=yes
 NM_CONTROLLED=yes
 BOOTPROTO=static
 IPADDR=103.147.1.100
 IPADDR1=103.147.1.101
 IPADDR2=103.147.1.102
 NETMASK=255.255.255.0
 GATEWAY=103.147.1.1
 IPV6INIT=no
 DNS1=223.6.6.6
 DNS2=114.114.114.114
 重启网络服务生效或重新启动系统:
 service network restart
 -----------------------------------------------------------
 方式二:
 vi /etc/sysconfig/network-scripts/ifcfg-eth0
 编辑网卡信息
 DEVICE=eth0
 TYPE=Ethernet
 ONBOOT=yes
 NM_CONTROLLED=yes
 BOOTPROTO=static
 IPADDR=103.147.1.100
 NETMASK=255.255.255.0
 GATEWAY=103.147.1.1
 IPV6INIT=no
 DNS1=223.6.6.6
 DNS2=114.114.114.114
 ----------------------------------------
 加入以下
 IPADDR2=103.147.1.101
 NETMASK2=255.255.255.0
 -------------完成后如下↓---------
 DEVICE=eth0
 TYPE=Ethernet
 ONBOOT=yes
 NM_CONTROLLED=yes
 BOOTPROTO=static
 IPADDR=103.147.1.100
 NETMASK=255.255.255.0
 IPADDR2=103.147.1.101
 NETMASK2=255.255.255.0
 GATEWAY=103.147.1.1
 IPV6INIT=no
 DNS1=223.6.6.6
 DNS2=114.114.114.114
 重启网络服务生效或重新启动系统:
 service network restart
 ---------------------------------
 方式三:
 仿照/etc/sysconfig/network-scripts//ifcfg-eth0
 网卡配置文件,增加一个虚拟端口ifcfg-eth1
 cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth1
 vim /etc/sysconfig/network-scripts/ifcfg-eth1
 写入网卡信息
 DEVICE=eth0
 TYPE=Ethernet
 ONBOOT=yes
 NM_CONTROLLED=yes
 BOOTPROTO=static
 IPADDR=103.147.1.101
 NETMASK=255.255.255.0
 GATEWAY=103.147.1.1
 IPV6INIT=no
 DNS1=223.6.6.6
 DNS2=114.114.114.114
 ----------------------------------
 保存退出,重启服务器!
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