How To Disable NetworkManager on AlmaLinux 8

Disable NetworkManager on AlmaLinux 8

In this tutorial, we will show you how to install NetworkManager on AlmaLinux 8. For those of you who didn’t know, NetworkManager is the default tool for configuring and managing the network services on AlmaLinux 8 or CentOS 8, there are situations where it may be necessary to permanently disable NetworkManager, and use alternative methods to configure and manage the network. Remember good practice always demands that NetworkManager service is up and running for automatic detection of networks and managing interface settings.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you through the step-by-step turn-off of the NetworkManager on an AlmaLinux 8. You can follow the same instructions for Rocky Linux.

Disable NetworkManager on AlmaLinux 8

Step 1. First, let’s start by ensuring your system is up-to-date.

sudo dnf update
sudo dnf install epel-release
sudo dnf install network-scripts

Step 2. Disable NetworkManager on AlmaLinux 8.

To disable the NetworkManager service in AlmaLinux 8 or CentOS 8, run the following command below:

sudo systemctl stop NetworkManager

Confirm the status of the NetworkManager:

sudo systemctl status NetworkManager

Next, we add NM_Controlled=no to the interface config file:

nano /etc/sysconfig/network-scripts/ifcfg-<interface>

Replace with the interface name from ifconfig -a (or) ipaddr, for example:

nano /etc/sysconfig/network-scripts/ifcfg-ens2

Add the following line:

NM_CONTROLLED="no"

Restart Network to apply all the configuration changes:

sudo systemctl restart network
sudo systemctl enable network

Congratulations! You have successfully disabling NetworkManager. Thanks for using this tutorial to turn off the NetworkManager on your AlmaLinux 8 system. For additional help or useful information, we recommend you check the official AlmaLinux website.

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