If you’re using CentOS 7 and are having trouble getting NMTUI (NetworkManager Text User Interface) to work properly, you’re not alone. This issue can arise for various reasons, but often, it’s due to improper installation or configuration of the NetworkManager service. In this article, we’ll walk you through the steps to resolve issues where nmtui doesn’t work, using some basic commands to install and configure NetworkManager on CentOS 7.
What is NMTUI?
Before diving into the troubleshooting steps, let’s clarify what NMTUI is. NMTUI is a text-based user interface for managing network connections on Linux systems using NetworkManager. It’s useful for users who prefer not to use the command line directly but need a way to manage their network configurations in a terminal. It provides an easy-to-navigate interface for tasks like setting up IP addresses, DNS settings, Wi-Fi, Ethernet interfaces, and more.
The Problem: NMTUI Not Working
Sometimes, after installing or updating CentOS 7, you may find that running nmtui in the terminal doesn’t bring up the expected interface. This can happen for several reasons, such as NetworkManager not being installed or started properly.
Let’s go through some common steps to fix this issue.
Step 1: Install NetworkManager-tui
First, ensure that the NetworkManager TUI package is installed on your system. While NetworkManager is likely installed by default on CentOS 7, the text-based interface (nmtui) may not be. You can install it with the following command: