IP problem occurs when a virtual system is cloned in VirtualBox

Due to logging The server , So at least two virtual systems are required for testing , To avoid wasting time installing a virtual machine , I use it. VirtualBox The software's built-in function exports a virtual medium （ It is equivalent to copying a virtual system ）, Finally, I started the two virtual systems , Only one computer can assign IP Address , I ifconfig For a moment , Find out how they were assigned the same IP Address , So I found a solution on the Internet , Follow the tips of the Bulls , I did the following ： 1、 adopt VirtualBox Regenerate the clone of the virtual system Mac Address , Remember to shut down the system first , Pictured ：

2、 Edit the configuration file of network card ,vim /etc/sysconfig/network-scripts/ifcfg-eth0, modify mac The address is new mac Address ： HWADDR="08:00:27:27:5E:BF"

3、 Check /etc/udev/rules.d/70-persistent-net.rules file , You will find that there are two lines of such configuration items ： # PCI device 0x8086:0x100e (e1000) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:23:86:95", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"  # PCI device 0x8086:0x100e (e1000) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:27:5e:bf", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

One of the above items is the previous network card mac Address , That is, the address of the cloned network card , I deleted it , The following one is the address of our newly added network card , however NAME yes eth1, Here we need to change to eth0: # PCI device 0x8086:0x100e (e1000) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:27:27:5e:bf", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

4、 Due to the modification of the hardware configuration file , We need to update , Let the system reload new hardware devices , Execute the following command ： start_udev

5、 Now we can restart the network card ,： ifup eth0

6、 Use ifconfig View network card information , Find out eth0 Has been reassigned ip Address