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Joining an Ubuntu Computer to a Windows Domain

The integration of Linux-based systems, such as Ubuntu, into Windows domains is becoming increasingly common. This integration allows for a unified and efficient management experience across different platforms.

The Process

In this guide, we'll explore the step-by-step process of joining an Ubuntu computer to a Windows domain, facilitating a seamless coexistence in a heterogeneous IT environment.

Verify Network Connectivity

Before initiating the domain joining process, ensure that your Ubuntu computer has a stable and active network connection. Open a terminal and use commands like ping to confirm connectivity to the domain controller.

Install SSSD and Realmd

To enable domain integration on Ubuntu, you need to install the required packages. Open a terminal and run the following commands:

sudo apt update
sudo apt install realmd sssd sssd-tools

These packages provide the tools necessary for Ubuntu to interact with Active Directory (AD) and join the domain.

Join the Domain

Run the following command in the terminal to join the Ubuntu computer to the Windows domain:

sudo realm join --user=YOUR_USERNAME YOUR_DOMAIN_NAME

Replace YOUR_USERNAME with a domain administrator username and YOUR_DOMAIN_NAME with the actual domain name.

You will be prompted to enter the password for the specified user. Once entered correctly, the Ubuntu computer will be joined to the domain.

Configure SSSD

After joining the domain, configure the System Security Services Daemon (SSSD) to manage authentication and user information. Open the SSSD configuration file for editing:

sudo nano /etc/sssd/sssd.conf

Update the use_fully_qualified_names parameter to False to allow users to log in without specifying the domain:

use_fully_qualified_names = False

Save the changes and restart SSSD

sudo service sssd restart

Verify Domain Integration

To confirm that the Ubuntu computer has successfully joined the domain, you can use the realm list command in the terminal:

realm list

This command should display information about the joined domain, including the domain name, realm, and configured settings.


Integrating Ubuntu into a Windows domain might seem daunting, but by following these steps, you can bridge the gap between Linux and Windows environments. The seamless integration of Ubuntu into a Windows domain not only enhances centralized management but also promotes a collaborative and interoperable IT ecosystem. If you encounter any challenges during the process, consult your IT administrator for assistance. Embracing diversity in your IT infrastructure contributes to a more flexible and adaptive organization.

About this post

Posted: 2023-11-13
By: dwirch
Viewed: 89 times



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