Disable Network Manager on CentOS 6

This article will provide the steps to disable Network Manager in CentOS 6. Network Manager is not compatible with some 3rd party softwares, such as cPanel, and must be disabled prior to installing the conflicting programs.

The following guide requires root user access.
  1. Disable the Network Manager by running these commands:
    service NetworkManager stop
    chkconfig NetworkManager off
  2.  Change to the /etc/sysconfig/network-scripts directory.
  3. Open the ifcfg-eth0 and ifcfg-lo files with your preferred text editor and, if they exist, set the following keys' values:
    NM_CONTROLLED=no
    ONBOOT=yes
  4. Run the following commands to restart the network:
    chkconfig network on
    service network start

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