How to Install Webmin on CentOS 8

Webmin
is an open-source control panel that allows you to manage your Linux server through an easy-to-use web interface. It allows you to manage users, groups, disk quotas, create files and directories as well as configure most popular services including web, FTP, email and database servers.

This tutorial explains how to install Webmin on CentOS 8.

Prerequisites #

To be able to install packages, you need to be logged in as root or user with sudo privileges
.

Installing Webmin on CentOS #

The recommended method for installing Webmin on CentOS 8 is to enable the Webmin repository and install the Webmin package using the dnf package manager.

Perform the following steps to install Webmin on CentOS:

1. Open your favorite text editor
   and create the repository file:

   sudo nano /etc/yum.repos.d/webmin.repo

   Paste the following content into the file:

   /etc/yum.repos.d/webmin.repo

   [Webmin]
   name=Webmin Distribution Neutral
   #baseurl=https://download.webmin.com/download/yum
   mirrorlist=https://download.webmin.com/download/yum/mirrorlist
   enabled=1

   Save the file and close the editor.

2. Import the Webmin GPG key using the following rpm
   command:

   sudo rpm --import http://www.webmin.com/jcameron-key.asc

3. Install the latest version of Webmin by typing:

   sudo dnf install webmin

   The command automatically resolves all dependencies. Once the installation finishes, the following output is displayed:

   Webmin install complete. You can now login to https://your_server_ip_or_hostname:10000/
   as root with your root password.

   The Webmin service will start automatically.

That’s it! At this point, you have successfully installed Webmin on your CentOS 8 server.

Adjust the Firewall #

By default, Webmin listens for connections on port 10000 on all network interfaces.

To be able to access the Webmin interface from a web browser, you need to open the Webmin port in your server’s firewall
.

Run the following commands to allow traffic on port 10000:

sudo firewall-cmd --zone=public --add-port=10000/tcpsudo firewall-cmd --runtime-to-permanent

Accessing Webmin Web Interface #

Now that Webmin is installed on your CentOS server open your [favorite browser and type your server’s hostname name or public IP address followed by the Webmin port 10000:

https://your_server_ip_or_hostname:10000/

The browser will complain about the certificate being not valid, because by default, Webmin uses an untrusted self-signed SSL certificate
.

Login to the Webmin web interface using your root user credentials:

Once you log in, you will be redirected to the Webmin dashboard, which provides basic information about your system.

From here, you can start configuring and managing your CentOS 8 server as per your requirement.

Conclusion #

You have successfully installed Webmin on your CentOS 8 machine. You can now start managing the services through the Webmin web interface.

To learn more about Webmin, visit their official documentation
page.

If you have any questions, please leave a comment below.