Clone centos and change Nic

1. Backup etc/udev/rules. d/70-persistent-net.rules [root @ SRD999/] # cdetc/udev/rules. d/[root@SRD999rules.d] # ls60-fprint-autosuspend.rules70-persistent-net.rules & nbsp

1. back up etc/udev/rules. d/70-persistent-net.rules

[Root @ SRD999/] # cd etc/udev/rules. d/

[Root @ SRD999 rules. d] # ls

60-fprint-autosuspend.rules 70-persistent-net.rules 98-kexec.rules

60-pcmcia.rules 90-alsa.rules 99-fuse.rules

60-raw.rules 90-hal.rules

70-persistent-cd.rules 97-rjth-serial.rules

[Root @ SRD999 rules. d] # cp 70-persistent-net.rules 70-persistent-net.rules.bak

2. modify the configuration file

[Root @ SRD999 rules. d] # vi 70-persistent-net.rules

Delete eth0

Change eth1 to eth0

Before modification

After modification

Delete eth0

Change eth1 to eth0

 

Modify etc/sysconfig/network-scripts/ifcfg-eth0 to change HWADDR to the above information, that is, the MAC address, and configure the IP address and other information

[Root @ SRD999/] # vi etc/sysconfig/network-scripts/ifcfg-eth0

Before change

After modification

Restart Nic

[Root @ SRD999/] # service network restart

Shutting down loopback interface: [OK]

Bringing up loopback interface: [OK]

Bringing up interface eth0: Active connection state: activated

Active connection path:/org/freedesktop/NetworkManager/ActiveConnection/1

[OK]

[Root @ SRD999/] #

 

Install telnet

[Root @ SRD999/] # yum-y install telnet *

Loaded plugins: fastestmirror, refresh-packagekit, security

Loading mirror speeds from cached hostfile

* Base: mirrors.opencas.cn

* Extras: mirrors.zju.edu.cn

* Updates: mirrors.zju.edu.cn

Setting up Install Process

Resolving Dependencies

--> Running transaction check

---> Package telnet. x86_64 1:0. 17-48.el6 will be installed

---> Package telnet-server.x86_64 1:0. 17-48.el6 will be installed

--> Processing Dependency: xinetd for package: 1: telnet-server-0.17-48.el6.x86_64

--> Running transaction check

........................................ .......................

 

[Root @ SRD999/] # cd etc/xinetd. d

[Root @ SRD999 xinetd. d] # ls

Chargen-dgram daytime-stream echo-dgram tcpmux-server time-stream

Chargen-stream discard-dgram echo-stream telnet

Daytime-dgram discard-stream rsync time-dgram

[Root @ SRD999 xinetd. d] # cp telnet. bak backup

[Root @ SRD999 xinetd. d] # vi telnet

[Root @ SRD999 xinetd. d] #

Change disable to no

Before modification

After modification

Restart service

[Root @ SRD999/] # service xinetd restart

Stopping xinetd: [FAILED]

Starting xinetd: [OK]

[Root @ SRD999/] # service xinetd restart

Stopping xinetd: [OK]

Starting xinetd: [OK]

[Root @ SRD999/] #

After the firewall is enabled, you can log on to the system via telnet.