切换用户为root用户,如果已经是root用户则忽略该步骤
执行命令:
su –
回车
输入root用户密码
切换为root用户后,可以看到是以#开头
查看当前的网卡信息可以通过命令ifconfig来查看
命令:
#ifconfig
从上面可以看到IP地址现在是192.168.8.113
修改网卡eth0的配置文件,默认情况eth0的配置如下:
命令:
[root@bogon ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="dhcp"
HWADDR="00:0C:29:3C:EF:C2"
IPV6INIT="yes"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
UUID="4375e220-3ef8-4e8c-9de4-9e2ee9007c88"
默认情况是通过dhcp动态获取ip地址,现在我们需要修改该配置文件,让其使用静态IP地址
通过vi命令编辑网卡配置文件/etc/sysconfig/network-scripts/ifcfg-eth0,将上面的内容修改为:
[root@bogon ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0(打开文件后按键盘的小写i进行编辑)
DEVICE="eth0"
BOOTPROTO="static"
HWADDR="00:0C:29:3C:EF:C2"
IPV6INIT="yes"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
UUID="4375e220-3ef8-4e8c-9de4-9e2ee9007c88"
IPADDR=192.168.8.202
GATEWAY=192.168.8.1
NETMASK=255.255.255.0
DNS1=8.8.8.8
上面标记为红色为修改或添加部分,简单说明:
BOOTPROTO="static" à修改网卡获取IP地址的方式为静态
IPADDR=192.168.8.202 –>静态IP地址
GATEWAY=192.168.8.1 ->网关地址
NETMASK=255.255.255.0 ->掩码地址
DNS1=8.8.8.8 ->NDS地址
修改完成后保存配置文件(vi命令:按esc键,输入:wq!回车)
注意配置文件中 HWADDR和DEVICE值必须与ifconfig中显示的一直,以ifconfig命令显示的信息为准。
重启系统的网卡服务,让刚才的配置生效
重启网卡服务命令:
[root@localhost ~]# service network restart
Shutting down interface eth0: Device state: 3 (disconnected)
[ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Active connection state: activating
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/4
state: activated
Connection activated
[ OK ]
重启成功后再次查看本机的ip信息
[root@localhost ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:3C:EF:C2
inet addr:192.168.8.202 Bcast:192.168.8.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe3c:efc2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:28655 errors:0 dropped:0 overruns:0 frame:0
TX packets:908 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2308026 (2.2 MiB) TX bytes:133068 (129.9 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:104 errors:0 dropped:0 overruns:0 frame:0
TX packets:104 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:8276 (8.0 KiB) TX bytes:8276 (8.0 KiB)
[root@localhost ~]#
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