• How to Configure Internet access on a CentOS Minimal install

    By default a CentOS minimal install can't connect to the network or the internet, in order to configure it to access the outside world you need to follow the following steps:

    1. Configure the DHCP client on the default network interface eth0 by executing the following command:

    dhclient eth0

    2. Edit the main network configuration file to make sure networking is enabled using the command

    vi /etc/sysconfig/network

    and make sure that it has networking set to yes

    NETWORKING=yes

    3. Edit the network configuration file for eth0 to enable it to use a dynamic ip using dhcp

    vi /etc/sysconfig/network-scripts/ifcfg-eth0

    4. Modify the file to have the following

    DEVICE="eth0"
    BOOTPROTO="dhcp"
    ONBOOT="yes"
    NM_CONTROLLED="no"

    4. Save the file and then restart the network service using the following command

    service network restart

    5. Make sure that eh0 has pulled an IP using the following command

    ifconfig

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