Tutorial on modifying network configuration After cloning centos6 Virtual Machine in Linux, linuxcentos6

Tutorial on modifying network configuration After cloning centos6 Virtual Machine in Linux, linuxcentos6

This configuration is based on centos6.

Generally, when you directly clone a VM and execute ifconfig on the obtained Vm, the IP address is usually not displayed. This is because we still lack some configuration.

The configuration is as follows:

1) modify the network address

(1) edit file vi/etc/sysconfig/network-scripts/ifcfg-eth0

Network Service running at startup: ONBOOT = yes

(2) set the IP address

If BOOTPROTO = dhcp is set, the virtual machine automatically obtains the IP address;

To specify the IP value, set OOTPROTO = static and specify the IPADDR, NETMASK, and GATEWAY values. As follows:

OOTPROTO = static

IPADDR = 192.168.13.136

NETMASK = 255.255.255.0

GATEWAY = 192.168.13.2

Note that the gateway value is set when the nat network mode is set.

2) Reassign the physical address

(1) Delete physical addresses in/etc/sysconfig/network-scripts/ifcfg-eth0 files

Delete two rows: UUID and physical address (HWADDR). If the above files do not have these two items, you don't have to worry about it.

(2) Delete the file/etc/udev/rules. d/70-persistent-net.rules

Operation: rm-rf/etc/udev/rules. d/70-persistent-net.rules

3) modify the Host Name

The cloned Virtual Machine name is still the name of the original virtual machine, which can be modified in the/etc/sysconfig/network file.

Run vi/etc/sysconfig/network to configure its HOSTNAME.

4) Restart linux

Execute the operation: init 6

5) check whether the network can be pinged to the Internet.

Operation: ping www.baidu.com

If the network cannot be pinged, you must set the dns service.

Run vi/etc/resolv. conf.

Add content:

Nameserver 219.232.48.61

Nameserver 59.108.61.61

Nameserver 114.114.114.114

Delete the line of search localdomain

Note: to map the IP address and Host Name of a VM, you can modify the/etc/hosts file to add the configuration of the IP address host name.