使用虚拟机克隆技术后,网卡的信息就会改变,为方便搭建我们的开发环境，此时重置网卡就很有必要了
- ip link show 登陆克隆后的虚拟机，检查网卡信息
[root@node rules.d]# ip link show
1: lo: mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 08:00:27:6c:e6:fe brd ff:ff:ff:ff:ff:ff
3: eth1: mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 08:00:27:6f:47:74 brd ff:ff:ff:ff:ff:ff
# 从2： 3：中获取到两个mac地址：
2：link/ether 08:00:27:6c:e6:fe
3：link/ether 08:00:27:6f:47:74
# 记住这两个mac 地址，接下来的步骤会用到
- 编辑网卡设备配置
[root@node ~]# cd /etc/udev/rules.d/
[root@node rules.d]# ll
总用量 40
-rw-r--r--. 1 root root 1652 11月 12 2010 60-fprint-autosuspend.rules
-rw-r--r--. 1 root root 1060 11月 12 2010 60-pcmcia.rules
-rw-r--r--. 1 root root 316 10月 15 2014 60-raw.rules
-rw-r--r--. 1 root root 151 1月 26 20:11 60-vboxadd.rules
-rw-r--r--. 1 root root 535 1月 9 20:52 70-persistent-cd.rules
-rw-r--r--. 1 root root 917 1月 29 13:53 70-persistent-net.rules #编辑它
-rw-r--r--. 1 root root 320 1月 12 2015 90-alsa.rules
-rw-r--r--. 1 root root 83 10月 15 2014 90-hal.rules
-rw-r--r--. 1 root root 304 7月 24 2015 98-kexec.rules
-rw-r--r--. 1 root root 54 12月 8 2011 99-fuse.rules
[root@node rules.d]# vim 70-persistent-net.rules
# PCI device 0x8086:0x100e (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:c3:c4:ca", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x100e (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:93:4e:85", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x100e (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:6c:e6:fe", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
# PCI device 0x8086:0x100e (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:6f:47:74", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3"
# 由以上内容观察可知：该配置共配置了四个网卡信息，注意之前查询的mac地址，只有最后两个满足mac地址存在，将前两个注释，并把最后两个的名称对应更改：
# PCI device 0x8086:0x100e (e1000)
#SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:c3:c4:ca", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x100e (e1000)
#SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:93:4e:85", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x100e (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:6c:e6:fe", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x100e (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:6f:47:74", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
更改计算机名
[root@node ~]# vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=node
NTPSERVERARGS=iburst
#HOSTNAME node=>node02
重启生效
[root@node ~]# reboot
……
# 重新登陆
[root@node02 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:6C:E6:FE
inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe6c:e6fe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:62 errors:0 dropped:0 overruns:0 frame:0
TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7588 (7.4 KiB) TX bytes:7338 (7.1 KiB)
eth1 Link encap:Ethernet HWaddr 08:00:27:6F:47:74
inet addr:192.168.56.3 Bcast:192.168.56.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe6f:4774/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:133 errors:0 dropped:0 overruns:0 frame:0
TX packets:100 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15060 (14.7 KiB) TX bytes:15839 (15.4 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:65536 Metric:1
RX packets:12 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:720 (720.0 b) TX bytes:720 (720.0 b)
[root@node02 ~]# ping 114.114.114.114
PING 114.114.114.114 (114.114.114.114) 56(84) bytes of data.
64 bytes from 114.114.114.114: icmp_seq=1 ttl=83 time=38.5 ms
64 bytes from 114.114.114.114: icmp_seq=2 ttl=64 time=38.7 ms
64 bytes from 114.114.114.114: icmp_seq=3 ttl=63 time=39.2 ms
^C
--- 114.114.114.114 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2353ms
rtt min/avg/max/mdev = 38.564/38.851/39.284/0.350 ms
[root@node02 ~]#
# 网卡测试，完成
成功！完！