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Hive is an open-source data warehousing framework built on top of Apache Hadoop. It allows users to query large datasets stored in Hadoop using a SQL-like language called HiveQL. Hive provides an interface for data analysts and developers to work with Hadoop without having to write complex MapReduce jobs. In this article, we will discuss how to install and configure Hive with high availability. High availability (HA) is a critical requirement for any production system. HA ensures that system is always available, even in event of hardware or software failures. In context of Hive, HA means that Hive server is ... Read More
GitLab is an open-source platform that allows you to manage your source code repositories and collaborate with your team members. With GitLab, you can host your Git repositories, manage code reviews, automate CI/CD pipelines, and much more. In this article, we will guide you through process of installing and configuring GitLab on CentOS 8/7. Before we start with installation, there are a few prerequisites that you need to fulfill − Prerequisites A CentOS 8/7 server with a minimum of 4GB of RAM and 2 CPU cores. A domain name pointing to server's IP address. A valid SSL certificate for ... Read More
FTP (File Transfer Protocol) is a popular protocol used for transferring files between client and server machines. An FTP server allows clients to connect to server and access files stored on server. Ubuntu, a popular Linux distribution, comes with many FTP servers available for installation. In this article, we will discuss how to install and configure an FTP server in Ubuntu. Step 1: Install FTP Server The first step in setting up an FTP server in Ubuntu is to install FTP server package. There are several FTP server packages available for Ubuntu, including vsftpd, proftpd, and pure-ftpd. In this article, ... Read More
In today's era, use of clusters has become increasingly important in field of computing. A cluster is a group of interconnected computers that work together as a single entity. They are used for high-performance computing, data analysis, and other applications where a single computer is not sufficient to handle load. In this article, we will discuss how to install and configure a cluster with two nodes in Linux. Before we proceed, it's important to understand concept of a cluster. A cluster consists of two or more nodes that work together as a single system. Each node is a separate computer ... Read More
Chronic bronchitis and emphysema are two conditions that fall under the umbrella term of chronic obstructive pulmonary disease (COPD). Both chronic bronchitis and emphysema are caused by damage to the lungs and airways, which can lead to breathing difficulties and other symptoms. Despite some similarities, there are distinct differences between the two conditions. What is Chronic Bronchitis? Chronic bronchitis is a chronic inflammatory disease of the bronchi. It is characterized by prolonged cough and mucus formation in the respiratory tract. Bronchitis is considered chronic if the symptoms occur most days of the month, three months a year for two consecutive ... Read More
Cloudera Manager is an enterprise-level software solution for managing Apache Hadoop clusters. It provides a web-based interface for deploying, configuring, and monitoring Hadoop clusters. Cloudera Manager is available in both open-source and enterprise editions. In this article, we will discuss how to install and configure Cloudera Manager on CentOS/RHEL 8. Prerequisites Before we proceed with installation, make sure that following prerequisites are met − A fresh installation of CentOS/RHEL 8 A user with sudo privileges A stable internet connection Step 1: Install Java Cloudera Manager requires Java to be installed on system. CentOS/RHEL 8 comes with OpenJDK pre-installed, ... Read More
OpnSense is an open-source, easy-to-use firewall platform that provides robust network security solutions. It is based on FreeBSD and offers a user-friendly web interface for configuring and managing firewall. This article will guide you through process of installing and configuring a basic OpnSense firewall. Step 1: Download OpnSense ISO The first step in installing OpnSense is to download ISO image from official website. latest stable release can be found on OpnSense downloads page. You will need to select appropriate image for your hardware architecture (e.g., AMD64, ARM, etc.). Step 2: Create a Bootable USB Drive Once you have downloaded ISO ... Read More
Apache Tomcat is a popular open-source web server and servlet container that is widely used to deploy Java-based web applications. In this article, we will show you how to install and configure Apache Tomcat 9 on CentOS 8/7. Step 1: Install Java The first step to installing Apache Tomcat is to install Java. Tomcat requires a Java Development Kit (JDK) version 8 or later to be installed. You can check installed Java version on your system by running following command − java -version If Java is not installed on your system, you can install it by running following command ... Read More
Apache Hadoop is an open-source framework that allows for distributed processing of large data sets. It can be installed and configured on a single node, which can be useful for development and testing purposes. In this article, we will discuss how to install and configure Apache Hadoop on a single node running CentOS 8. Step 1: Install Java Apache Hadoop requires Java to be installed on system. To install Java, run following command − sudo dnf install java-11-openjdk-devel Step 2: Install Apache Hadoop Apache Hadoop can be downloaded from official Apache website. latest stable version at time of writing ... Read More
Ansible is a popular open-source automation tool that allows system administrators to automate repetitive tasks and manage multiple servers simultaneously. It is widely used for configuration management, application deployment, and task automation. While Ansible is primarily designed for Linux and Unix-based systems, it can also be installed on Windows. In this article, we will guide you through process of installing and configuring Ansible on Windows. Requirements Before we begin, make sure your Windows machine meets following requirements − A Windows operating system (Windows 7, Windows 8, Windows 10, or Windows Server 2012 or later) A minimum of 4GB RAM ... Read More