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 software, such as cPanel, and must be disabled prior to installing the conflicting programs.

The following guide requires root user access.

Disable Network Manager

To disable the Network Manager, perform the following steps:

From the command line, login as root user.

Run the commands:

service NetworkManager stop
chkconfig NetworkManager off

Change to the /etc/sysconfig/network-scripts directory.
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
```
Run the following commands to restart the network:
```
chkconfig network on
service network start
```

Network Manager is now disabled and the network has been restarted.

Uninstall Network Manager

To uninstall the Network Manager, perform the following steps:

From the command line, login as root user.
Run the command:
```
yum remove NetworkManager -y
```

Network Manager is now uninstalled.

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