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How To Create a Highly Available Multi-node Hadoop Cluster on CentOS/RHEL 7/8
This tutorial will show you how to set up a highly available multi-node hadoop cluster on CentOS/RHEL server. Please note that, this guide is specifically written for CentOS and RHEL release 7 and...
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How To Deploy a Fault-Tolerant MongoDB Sharded Cluster on Ubuntu 18/19/20
This tutorial will show you how to deploy a fault-tolerant and highly available MongoDB sharded cluster for your production use.A MongoDB sharded cluster consists of the following components:shard:...
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Create a Fault-Tolerant MongoDB Sharded Cluster using Shared Storage on...
This tutorial will walk you through the steps to set up a highly available fault-tolerant MongoDB sharded cluster using a shared storage for your production use. If you are not intend to use shared...
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How To Set Up a Highly Available PostgreSQL Cluster on Ubuntu 19/20
This guide will walk you through the steps to set up a highly available PostgreSQL cluster using Patroni and HAProxy on Ubuntu 19/20.04. If you wish to skip step by step guide, the below video tutorial...
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How To Set Up a Highly Available PostgreSQL Cluster on Ubuntu 18.04
This step by step guide will show you how to set up a highly available PostgreSQL cluster using Patroni and HAProxy on Ubuntu 18.0. These instruction can also be applied (slight changes may be...
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How To Create a Highly Available PostgreSQL Cluster on CentOS/RHEL 8
This tutorial will walk you through the steps to set up a highly available PostgreSQL cluster using Patroni and HAProxy on CentOS/RHEL 8.PrerequisitesTo follow this tutorial, you will need 5 (physical...
View ArticleHow To Install and Secure MongoDB on Ubuntu 18/19/20
MongoDB is a database engine that provides access to non-relational, document-oriented databases. This tutorial will show you how to install and configure MongoDB on Ubuntu. We will also explain on...
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How To Set Up a Highly Available MongoDB Sharded Cluster on CentOS/RHEL 7/8
This tutorial will walk you through the steps to set up a highly available MongoDB sharded cluster on CentOS/RHEL 7/8.A MongoDB sharded cluster consists of the following three components:Shard that can...
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How To Install Ansible AWX on CentOS/RHEL 7/8
AWX provides a web-based user interface, REST API, and task engine built on top of Ansible. This tutorial will walk you through the steps to set up Ansible AWX using Docker on a CentOS/RHEL...
View ArticleHow To Backup and Restore PostgreSQL Database
If you are using PostgreSQL in a production environment, it is recommended to frequently take backups to ensure that your important data is not lost. With the backups, you will be able to quickly...
View ArticleHow To Backup and Restore MySQL, MariaDB Database
MySQL and MariaDB include a built-in backup utility that simplifies the process to create a backup of a database. With mysqldump, you can create a logical backup, only if your database is accessible...
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How To Enable Two-factor Authentication For SSH on CentOS/RHEL 7/8
This tutorial will walk you through the steps to set up two-factor authentication for SSH on a CentOS/RHEL 7/8.Cyberthreats are increasing with the passage of time, hence securing access to your...
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How To Enable Two-factor Authentication For SSH on Ubuntu 18/19/20
This tutorial will walk you through the steps to set up two-factor authentication for SSH on Ubuntu or Debian. Cyberthreats are increasing with the passage of time, hence securing access to your...
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How To Install Node.JS on CentOS/RHEL 8
This tutorial will show you how to install Node.js using three different options on your CentOS/RHEL 8. You can adopt any of the following methods to install Node.js on your system.PrerequisitesTo...
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How To Create a Bootable Ubuntu USB from Windows 10
Creating a bootable Ubuntu USB from Windows is a very simple and easy process. With a bootable Ubuntu USB stick, you can test out the Ubuntu desktop experience even without installing it on your...
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How To Fix Ubuntu not Detecting Windows 10 While Installing in Dual Boot
Ubuntu installation wizard will automatically detect your Windows if you are installing in dual boot, but in some cases, if you encounter "This computer currently has no detected operating system"...
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How To Set Up 389 Directory Server on CentOS/RHEL 8
The 389 Directory Server is an open-source enterprise-class LDAP server for Linux that can be deployed in less than an hour. This guide will help you to set up a 389 Directory Server on CentOS/RHEL...
View ArticleSecure Apache Web Server Content using ModSecurity on Ubuntu 18.04/19.10/20.04
ModSecurity is an open-source, cross-platform web application firewall (WAF) module. Known as the "Swiss Army Knife" of WAFs, it enables web application defenders to gain visibility into HTTP(S)...
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TikTok vulnerability allows hackers to easily penetrate into users data
A security vulnerability in a popular video-sharing app (TikTok ) allows hackers to exploit millions of users. The popular video-sharing app uses an insecure protocol (HTTP) to process the videos and...
View ArticleHow To Install or Upgrade PHP on Fedora/CentOS/RHEL
This guide will show you how to install or upgrade to latest release of PHP on Fedora, RHEL and CentOS.Note: On CentOS/RHEL 8, yum command has been replaced with dnf and in near future yum package...
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