Last modified: February 22, 2024

Overview

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

When you disable the Network Manager service, you disable this automation. You must manually address any changes to the system’s network settings. For example, if you disable the Network Manager, then reboot the system, the system will not automatically reconnect any preexisting connections.

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:
   • CloudLinux 6:

     1 2	service NetworkManager stop chkconfig NetworkManager off

   • All other supported operating systems:

     1 2	systemctl stop NetworkManager systemctl disable NetworkManager

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:
   • CloudLinux 6:

     1 2	chkconfig network on service network start

   • All other supported operating systems:

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