VirtualBox安装CentOS的网络配置

$ 前言

• 镜像:CentOS-6.4-i386-minimal.iso

$ 配置目标

• 虚拟机里的CentOS既可以和主机互联,同时也可以连上外网

$ 碰到的错误

使用ping时,错误:network is unreachableservice network restart时,错误:Device eth0 does not seem to be present.

1.先配置好Host-only和Nat

virtualbox_1.jpgvirtualbox_2.jpg

2.查看文件cat /etc/udev/rules.d/70-persistent-net.rules

查看配置的上图的mac地址 能否与 文件中的ATTR[address]对应上.

假如不对应可以选择删除该文件重启，也可以直接修改该文件

[root@localhost network-scripts]# cat /etc/udev/rules.d/70-persistent-net.rules# This file was automatically generated by the /lib/udev/write_net_rules# program, run by the persistent-net-generator.rules rules file.## You can modify it, as long as you keep each rule on a single# line, and change only the value of the NAME= key.# PCI device 0x8086:0x100e (e1000)SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:e2:c7:25", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"# PCI device 0x8086:0x100e (e1000)SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:bb:f0:79", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"

3.进入 cd /etc/sysconfig/network-scripts目录

3.1 修改目录下的ifcfg-eth0 文件

该文件的DEVICE,HWADDR 应该与/etc/udev/rule.d/70-persistent-net.rules中的eth1一致.
我的ifcfg-eth0 文件,修改后为:

[root@localhost network-scripts]# cat /etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=eth1HWADDR=08:00:27:E2:C7:25TYPE=EthernetUUID=459bb09f-ce67-4276-a510-371dc8b8a12eONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=dhcp

3.2 修改目录下的ifcfg-eth1 文件(没有则创立)

该文件的DEVICE,HWADDR 应该与/etc/udev/rule.d/70-persistent-net.rules中的eth2一致.
我的ifcfg-eth1 文件,修改后为:

[root@localhost network-scripts]# cat /etc/sysconfig/network-scripts/ifcfg-eth1DEVICE=eth2HWADDR=08:00:27:BB:F0:79TYPE=EthernetUUID=459bb09f-ce67-4276-a510-371dc8b8a12eONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=dhcp

4.重启服务, service network restart

执行ifconfig命令，输出

[root@localhost network-scripts]# ifconfigeth1      Link encap:Ethernet  HWaddr 08:00:27:E2:C7:25          inet addr:192.168.56.103  Bcast:192.168.56.255  Mask:255.255.255.0          inet6 addr: fe80::a00:27ff:fee2:c725/64 Scope:Link          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:924 errors:0 dropped:0 overruns:0 frame:0          TX packets:500 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000          RX bytes:90940 (88.8 KiB)  TX bytes:80641 (78.7 KiB)eth2      Link encap:Ethernet  HWaddr 08:00:27:BB:F0:79          inet addr:10.0.3.15  Bcast:10.0.3.255  Mask:255.255.255.0          inet6 addr: fe80::a00:27ff:febb:f079/64 Scope:Link          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:5 errors:0 dropped:0 overruns:0 frame:0          TX packets:13 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000          RX bytes:1066 (1.0 KiB)  TX bytes:1145 (1.1 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:0 errors:0 dropped:0 overruns:0 frame:0          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)