网卡配置记录

将自己的网卡信息记录到这以免不时之需

references:

http://vjetnamnet.com/how-to-configure-static-ip-address-configuration-on-rhelcentos-linux/

系统环境

CentOS release 6.3 (Final)

VMware® Workstation 9.0.0 build-812388

上网方式

虚拟机设置 -->硬件-->网络适配器-->网络连接-->桥接

操作步骤

查询虚拟系统网络情况

ifconfig

eth1      Link encap:Ethernet HWaddr 00:50:56:21:35:91
          inet addr:192.168.43.45 Bcast:192.168.43.255 Mask:255.255.255.0
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
          Interrupt:19 Base address:0x2024

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:453 errors:0 dropped:0 overruns:0 frame:0
          TX packets:453 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:380612 (371.6 KiB) TX bytes:380612 (371.6 KiB)

vi /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1
BOOTPROTO=none
ONBOOT=yes
TYPE=Ethernet
UUID="f66ef058-74ed-4c68-88d1-a477f0d3a96c"
NAME="System eth1"
DNS=192.168.43.1
USERCTL=no
DEFROUTE=no
IPADDR=192.168.43.45
GATEWAY=192.168.43.1
MACDDR=00:0C:29:82:76:F0
NETMASK=255.255.255.0

3

vi /etc/sysconfig/networking/devices/ifcfg-lo

DEVICE=lo
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
BRIADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback

3. 重新启动网络的命令

service NetworkManager stop
chkconfig NetworkManager off
service network restart
chkconfig network on

4 访问本地网络测试 ---成功

@localhost apache]# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.053 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.058 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.068 ms

5 错误集锦

5.1

命令

#service network restart

错误

Device eth0 has different MAC address than expected, ignoring....

解决

将/etc/sysconfig/network-scripts/ifcfg-eth0中的HWDDR改为MACDDR，再重启网络即可

5.2

命令

#service network restart

错误

Bringing up interface eth0: Error: No suitable device found: no device found for connection ‘ System eth1′.[FAILED]

或者执行

#ifconfig eth1 up

错误

eth1:unknown interface:No such device

解决

删除/etc/udev/rules.d/70-persistent-net.rules文件，重启系统

5.3

启动网卡服务，但是出错，就是：device eth0 does not seem to be present, delaying initialization

原因

ifcfg-eth0的配置文件里保存了以前的MAC地址，就把这一行删除掉。把/etc/udev/rules.d/70-persistent-net.rules 删除后重启机器就可以了，因为这个文件绑定了网卡和mac地址，所以换了网卡以后MAC地址变了，所以不能正常启动。

解决

vi /etc/sysconfig/network-scripts/ ifcfg-eth1

ifcfg-eth1的配置文件里保存了以前的MAC地址，就把这一行删除掉在重启网卡

/etc/udev/rules.d/70-persistent-net.rules 删除后重启机器

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