Advanced Package Management DIY Labs

  1. Configure Access to RHEL 8 Repositories (Make sure the RHEL 8 ISO image is attached to the VM and mounted.) Create a definition file under /etc/yum.repos.d/, and define two blocks (one for BaseOS and another for AppStream).
  vim /etc/yum.repos.d/local.repo
 [BaseOS]
 name=BaseOS 
 baseurl=file:///mnt/BaseOS 
 gpgcheck=0 

 [AppStrean]
 name=AppStream 
 baseurl=file:///mnt/AppStream 
 gpgcheck=0
  1. Verify the configuration with dnf repolist. You should see numbers in thousands under the Status column for both repositories.
 dnf repolist -v

Lab: Install and Manage Individual Packages

  1. List all installed and available packages separately.
 dnf list --available && dnf list --installed
  1. Show which package contains the /etc/group file.
 dnf provides /etc/group
  1. Install the package httpd.
 dnf -y install httpd
  1. Review /var/log/yum.log/ for confirmation. (/var/lib/dnf/history)
  dnf history
  1. Perform the following on the httpd package:
  2. Show information
 dnf info httpd
  1. List dependencies
 dnf repoquery --requires httpd
  1. Remove it
 dnf remove httpd

Lab Install and Manage Package Groups

  1. List all installed and available package groups separately.
 dnf group list available && dnf group list installed
  1. Install package groups Security Tools and Scientific Support.
 dnf group install 'Security Tools'
  1. Review /var/log/yum.log for confirmation.
 dnf history
  1. Show the packages included in the Scientific Support package group, and delete this group.
 dnf group info 'Scientific Support' && dnf group  remove 'Scientific Support'

Lab: Install and Manage Modules

  1. List all modules. Identify which modules, streams and profiles are installed, default, disabled, and enabled from the output.
 dnf module list
  1. Install the default stream of the development profile for module php, and verify.
 dnf module install php && dnf module list
  1. Remove the module.
 dnf module remove php

Lab Switch Module Streams and Install Software

  1. List postgresql module. This will display the streams and profiles, and their status.
 dnf module list postgresql
  1. Reset both streams
 dnf module reset postgresql
  1. enable the stream for the older version, and install its client profile.
 dnf module install postgresql:15