Author: Rahul

I, Rahul Kumar am the founder and chief editor of TecAdmin.net. I am a Red Hat Certified Engineer (RHCE) and working as an IT professional since 2009..

Problem Recently, I installed Apache Kafka on the Ubuntu system. When tried to run the consumer console script, I found the error message that “zookeeper is not a recognized option”. ./bin/kafka-console-consumer.sh –topic testTopic –zookeeper localhost:9092 zookeeper is not a recognized option Option Description —— ———– –bootstrap-server –consumer-property properties in the form key=value to … … Solution After searching a bit time, I visited to Apache Kafa QUICKSTART guide. Here I found the solution that Kafka has removed –zookeeper option and replaced it with a new option –bootstrap-server . So the new command would be like: ./bin/kafka-console-consumer.sh –topic testTopic –bootstrap-server localhost:9092…

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LightDM is a free, opensource and lightweight X Display Manager for Linux Desktop systems. It is also used as a cross-desktop display manager. It supports various Desktop environments including various display technology, such as Wayland, Mir, and X windowing systems. This tutorial will help you to install the LightDM display manager on the Ubuntu Desktop system. Installing Lightdm on Ubuntu LightDM packages are available under default apt repositories. You can install lightdm on Ubuntu by running the following commands. sudo apt update sudo apt install lightdm Configure Lightdm as Default Display Manager Once the lightdm is installed on your system.…

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The Problem: Today, I launched a new AWS instance with Ubuntu 22.04. The default key provided by AWS is working fine with SSH. But when I attached my personal ssh key to the server and tried to access with FileZilla over SFTP, I got the following error in auth.log. May 10 11:52:58 localhost sshd[57650]: Disconnected from authenticating user ubuntu 203.190.146.202 port 46565 [preauth] May 10 11:52:59 localhost sshd[57652]: userauth_pubkey: key type ssh-rsa not in PubkeyAcceptedAlgorithms [preauth] May 10 11:53:00 localhost sshd[57652]: message repeated 3 times: [ userauth_pubkey: key type ssh-rsa not in PubkeyAcceptedAlgorithms [preauth]] May 10 11:53:00 localhost sshd[57652]: error:…

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Virtualization technology is essential in today’s IT landscape, allowing users to run multiple operating systems on a single physical host. Hyper-V is a powerful virtualization platform developed by Microsoft, widely used for running virtual machines (VMs) on Windows Server systems. When working with an Ubuntu VM in Hyper-V, one common challenge that users face is the need to adjust the screen resolution for a better user experience. The default screen resolution may not be suitable for your display, making it difficult to work efficiently. In this article, we will provide a step-by-step guide on how to modify the screen resolution…

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Question – How to find static IP Address of My Ubuntu Desktop system? 2 Ways to find IP Address on Ubuntu 22.04 Desktop and server editions? Ubuntu 22.04 desktop edition comes with an attractive Gnome Desktop Environment. You can either use the command prompt to check the current IP address on your system or use a GUI option to view the local IP address on your system. You can also use another article to change IP address on Ubuntu 22.04 desktop and server editions. Choose one of the below methods to check the current IP address on a Ubuntu system.…

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All the Linux Desktop systems have a default display manager, which is responsible for user authentication and loading the desktop environment. Once the system start, the display manager starts the login screen, and after successful user authentication, it loads the desktop environment. It also controls the user session. The gdm3, lightdm, and sddm are some popular display manager programs. gdm3 is the default for Gnome desktops, and sddm is the default used by KDE desktops. The lightdm is the lightweight cross-desktop display manager. This tutorial will help you to change the default display manager in your Ubuntu desktop system. Changing…

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After installing Ubuntu 22.04 the default network interface assigns an IP address using the DHCP server. Also, the wireless network will be active and enable networking over the wifi network. You can also configure the network interface with static IPv4 addresses. Ubuntu 22.04 uses the Netplan as a network manager. This tutorial helps you to configure network interfaces on Ubuntu 22.04 Desktop and Ubuntu 22.04 Server editions. The desktop users can use any one of the below methods but the server users that have CLI only access use the second method to edit network interface configuration files. Method 1: Configuring…

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Apache ActiveMQ is a widely used open-source messaging and integration patterns server. It’s written in Java and supports JMS (Java Messaging Service) as well as other cross language clients and protocols. In this article, we’ll walk through the process of installing and setting up Apache ActiveMQ on an Ubuntu 22.04 system. Prepare Your System The ActiveMQ can be configured on any system that has Java installed. So make sure that your Ubuntu 22.04 Linux system has Java installed. You can install Java on your with the following commands. sudo apt update sudo apt install default-jdk It’s a good practice and…

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Ubuntu 22.04 LTS Jammy Jellyfish is released and available for download. This tutorial will provide you the download links to DVD ISO Images of Ubuntu 22.04 LTS with different desktop flavors. You can find the Ubuntu 22.04 release notes on its official website. Download Ubuntu 22.04 Ubuntu desktop is available in multiple flavors, where you can choose what desktop manager you want as default. Some of the flavors are built for specific purposes. Select your favorite Desktop edition and download it with the following links: Ubuntu Desktop (Gnome) Kubuntu (KDE Desktop Environment) Lubuntu (LQXT Desktop) Ubuntu Budgie (Budgie Desktop) Ubuntu…

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Django is an open-source, high-level web framework written in Python programming. It follows the model–template–views architectural pattern for the development. The Django installation directory differs as per the installation methods. In this small faq, you will learn, how to find the Django installation directory on a Linux system. Django Installation Directory Open a terminal and connect to the Python shell. If you are using Python virtual environment, make sure to activate the environment before connecting to the Python shell. Then type the following commands to find the Django installation directory. You see the results below when Django is installed under…

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