The AWS Command Line Interface (CLI) is a all-in-one tool to manage services available on AWS cloud. On RHEL 8 / CentOS 8 the AWS CLI can be installed by using the python package management system PIP.

In this tutorial you will learn:
  • How to install AWS CLI tools on RHEL 8 / CentOS 8
  • How to configure AWS CLI tools on RHEL 8 / CentOS 8
  • How to remove AWS CLI tools on RHEL 8 / CentOS 8

Firewalld is a an underlining mechanism for firewall configuration on RHEL 8 / CentOS 8. Current RHEL 8 / CentOS 8 version of the Firewalld daemon is based on Nftables. To check open ports on RHEL 8 / CentOS 8 you can use the firewall-cmd command as shown below. We will also discuss how to check open ports remotely with the nmap command.

In this tutorial you will learn:
  • How to check open ports on RHEL 8.
  • How to check services on RHEL 8.
  • How to check open ports remotely using nmap.
  • How to list open ports and service with firewall-cmd.

The aim of this article is to get you started with basic Nginx web-server installation using the dnf install nginx command and configuration on RHEL 8 / CentOS 8. Nginx web server is an Apache alternative with a capability to be also used as reverse proxy, load balancer, mail proxy and HTTP cache.

In this tutorial you will learn:
  • How to install Nginx on RHEL 8 / CentOS 8.
  • How to start Nginx.
  • How to enable Nginx to start after reboot.
  • How to open HTTP and HTTPS ports.
  • How to run Nginx encrypted with HTTPS.
  • How to create self-signed SSL certificate for Nginx.

This article provides step by step instructions on how to recover/reset lost or forgotten RHEL 8 / CentOS 8 Linux root administrative password. To recover the root password you will first boot to the GRUB menu and perform a break at early stage of the boot process. Afterwards, you will remount the sysroot directory with read & write access and change the root password on RHEL 8 / CentOS 8 by using the passwd command to set the new root password.

In this tutorial you will learn:
  • How to perform a break at an early stage of the boot process.
  • How to remount root partition with read/write access.
  • How to change root password.
  • How to force filesystem relabeling.

The development tools group acts as a transitional package for installation of multiple development, compilation and debugging tools. Most notably these include Automake, Autoconf, Gcc (C/C++) as well as various Perl & Python macros and debuggers.

See below list for a complete list of packages available as part of the development tools group. The entire development tools group can be easily installed on RHEL 8 / CentOS 8 Linux by using the dnf command.

In this tutorial you will learn:
  • How to list the content of the development tools group on RHEL 8 / CentOS 8
  • How to install the development tools group on RHEL 8 / CentOS 8
  • How to remove the development tools group from RHEL 8 / CentOS 8

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