0 Configuring network interface on Ubuntu LAMP

sudo nano /etc/network/interfaces

# primary network interface

auto eth0

iface eth0 inet static

address xxx.xxx.xxx.xxx

netmask  xxx.xxx.xxx.xxx

Gateway  xxx.xxx.xxx.xxx

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Restart network interface.

sudo /etc/init.d/networking restart

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Add DNS record:

sudo nano /etc/resolv.conf

nameserver xxx.xxx.xxx.xxx

nameserver xxx.xxx.xxx.xxx

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Restart network interface.

sudo /etc/init.d/networking restart

That's all.