When install Cpanel&whm
need to isable Network Manager

Overview

This document describes how to disable the Network Manager service. The Network Manager service automates the network’s settings and disrupts connections to the IP addresses that reside in the ipaliases module.

For more information about how to disable the Network Manager service, read RedHat’s Disabling Network Manager documentation.

Disable the Network Manager service

To disable the Network Manager service, perform the following steps:

1. Disable Network Manager with the following commands:
    Disable NetworkManager on CentOS 6, CloudLinux 6, Red Hat Enterprise Linux 6 (RHEL), or Amazon Linux…
    Disable NetworkManager on CentOS 7, CloudLinux 7, or RHEL 7…

   1 2	systemctl stop NetworkManager.service systemctl disable NetworkManager.service

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:

   1 2	NM_CONTROLLED=no ONBOOT=yes

   Important:

   If either of these keys does not exist in your ifcfg-eth0 and ifcfg-lo files, do not add it. Instead, proceed to Step 4.

4. Run the following commands to restart the network:
    Restart the network on CentOS 6, CloudLinux 6, RHEL 6, or Amazon Linux…
    Restart the network on CentOS 7, CloudLinux 7, or RHEL 7…

   1 2	systemctl enable network.service systemctl start network.service

Additional documentation