RHCSA9 Exam Series: Operate Running Systems
Want to pass the RHCSA9 exam? This section of the RHCSA9 Exam Series: Operate Running Systems will review how to operate running systems–a key skill need to clear the RHCSA exam and we’ve got you covered with practical examples to help you prepare. Table of Contents Introduction As a Linux professional, it is important to […]
Install and Use PostgreSQL on CentOS8
Learn about installing and using PostgreSQL on CentOS 8 with this step-by-step guide and take your data management to the next level! Table of Contents Introduction PostgreSQL is an open-source, object-relational database system that provides robust data management and secure data storage. It was first released in 1989 and has since then been developed by […]
Installing and using IPA server on CentOS8
Discover how to easily set up and manage a secure and centralized authentication system using a FreeIPA server on CentOS 8. Table of Contents Introduction Identity Management or IdM is an essential component in any organization’s IT infrastructure. It is the process of identifying, authenticating, and authorizing users and their access to resources within a […]
RHCSA9 Exam Series: Create Simple Shell Scripts
In this create simple shell scripts section of the RHCSA9 Exam Series, we’ll review some topics and labs that may show up on the exam. Table of Contents Introduction Our aim in writing this article is to provide you with a comprehensive understanding of the knowledge, tasks, and skills required to pass the RHCSA 9 […]
Change DNS Settings using the NMCLI utility
In this article, we will review how to change DNS settings using nmcli. In RHEL7 and CentOS7, modifying the ifcfg scripts or /etc/resolv.conf files directly won’t work as they are overwritten by the NetworkManager. Table of Contents Introduction The nmcli command-line (CLI) tool is used for controlling the NetworkManager. It not only displays the network […]
Install Kubernetes Cluster on CentOS8
In this tutorial, we will review the Kubernetes cluster install on CentOS8. This procedure will mirror our previous article about this subject. Install a Kubernetes Cluster on Ubuntu 20.04 Also, this procedure will work for setting up a Kubernetes Cluster on CentOS7 or CentOS9. Table of Contents Introduction Kubernetes is an open-source container orchestration platform […]
Scan for network vulnerabilities using NMAP
Are you concerned about the security of your network? Learn about for network vulnerabilities scanning using NMAP, a powerful tool that can help you identify potential security issues and keep your network safe from cyber attacks. Table of Contents Introduction Network Mapper (NMAP) is a free and open-source tool used for network exploration, security auditing, […]
Install a Kubernetes Cluster on Ubuntu 20.04
In today’s article, we will review the step-by-step process involved with a Kubernetes cluster install on Ubuntu server version 20.04. However, this procedure will work with later version of Ubuntu (e.g Ubuntu 22.04 or later). Table of Contents Introduction The overall steps for installing a Kubernetes cluster on Ubuntu are very similar to those for […]
Installing and using Gitlab CE on Ubuntu 20.04
In this article, we will examine installing and using Gitlab on Ubuntu server version 20.04. Gitlab community edition or Gitlab CE can be installed by simply using apt install. Table of Contents Introduction GitLab is a web-based Git repository manager that provides features such as issue tracking, continuous integration, and continuous deployment. It is available […]
Installing Ubuntu Desktop 20.04 on KVM
In this tutorial, we will review how to install Ubuntu desktop on KVM. For this particular demonstration, we will examine version 20.04 of the operating system or Focal Fossa as it’s commonly known by codename. Table of Contents Introduction Installing an Ubuntu Desktop instance on KVM is a straightforward process that we will review in […]