Module Outline

• Register Systems for Red Hat Support
• Quiz
• Explain and Investigate RPM Software Packages
• Guided Exercise
• Install and Update Software Packages with DNF
• Guided Exercise
• Enable DNF Software Repositories
• Guided Exercise
• Summary
• Resources
• Graded Lab

Learning Objectives

After completing the work in this module you will be able to:

• Describe the process for registering hosts for Red Hat support.
• Examine RPM packages.
• Query the system for software packages based on different criteria.
• Find, install, and update software packages with the dnf command.
• Enable and disable server use of Red Hat or third-party DNF repositories.
• Explain how backporting contributes to system security.

Register Systems for Red Hat Support

Red Hat Subscription Management

• Register a system with a Red Hat account.
• Subscribe a system for updates and support.
• Enable repositories to provide software packages.
• Review and track entitlements.

Entitlement Certificates

• /etc/pki/product certificates indicate installed Red Hat products.
• /etc/pki/consumer certificates identify the Red Hat account for registration.
• /etc/pki/entitlement certificates indicate which subscriptions are attached.

Graded Quiz

Register Systems for Red Hat Support

Explain and Investigate RPM Software Packages

Software Packages and RPM

Name

httpd-2.4.62-1.el9_5.2.x86_64.rpm
      

Software Packages and RPM

Version

httpd-2.4.62-1.el9_5.2.x86_64.rpm
      

Software Packages and RPM

Release

httpd-2.4.62-1.el9_5.2.x86_64.rpm
      

Software Packages and RPM

Architecture

httpd-2.4.62-1.el9_5.2.x86_64.rpm
      

Examine RPM Packages

[student@servera ~]$ rpm -q httpd
httpd-2.4.62-1.el9_5.2.x86_64
      

Install Local RPM Packages

[student@servera ~]$ sudo rpm -ivh localinstall zoom_x86_64.rpm
      

Extracting RPM packages

An RPM package is a compressed archive which contains:

• File to be installed on your system.
• Metadata about the package such as description and dependencies.
• Scripts to install the program files and dependencies, and, later, remove these files when the package is removed.

Extracting RPM packages

[user@host /tmp]$ rpm2cpio httpd-2.4.51-7.el9_0.x86_64.rpm | cpio -idv
./etc/httpd/conf
./etc/httpd/conf.d/autoindex.conf
./etc/httpd/conf.d/userdir.conf
./etc/httpd/conf.d/welcome.conf
...output omitted...
      

Guided Exercise

Explain and Investigate RPM Software Packages

Install and Update Software Packages with DNF

Manage Software Packages with DNF

Find Software with DNF

[student@servera ~]$ dnf list 'http*'
Available Packages
http-parser.i686              2.9.4-6.el9   rhel-9.0-for-x86_64
http-parser.x86_64            2.9.4-6.el9   rhel-9.0-for-x86_64
httpcomponents-client.noarch  4.5.13-2.el9  rhel-9.0-for-x86_64
httpcomponents-core.noarch    4.4.13-6.el9  rhel-9.0-for-x86_64
httpd.x86_64                  2.4.51-5.el9  rhel-9.0-for-x86_64
httpd-devel.x86_64            2.4.51-5.el9  rhel-9.0-for-x86_64
...output omitted...
      

Find software by keyword

[student@servera ~]$ dnf search all 'web server'
========== Summary & Description Matched: web server ===========
nginx.x86_64 : A high performance web server and reverse proxy
pcp-pmda-weblog.x86_64 : Co-Pilot (PCP) metrics from  logs
================ Summary Matched: web server ===================
libcurl.x86_64 : A library for getting files from web servers
libcurl.i686 : A library for getting files from web servers
============= Description Matched: web server ==================
freeradius.x86_64 : High-performance free RADIUS server
...output omitted...
      

Find Details About a Package

[student@servera ~]$ dnf info httpd
Available Packages
Name         : httpd
Version      : 2.4.51
Release      : 5.el9
Architecture : x86_64
Size         : 1.5 M
Source       : httpd-2.4.51-5.el9.src.rpm
Repository   : rhel-9.0-for-x86_64-appstream-rpms
Summary      : Apache HTTP Server
...output omitted...
      

What Package Provides a File

Install Software with DNF

Remove Software with DNF

Install and Remove Groups of Software with DNF

Install and Remove Groups of Software with DNF

View Transaction History

Manage Package Module Streams with DNF

Introduction to BaseOS and Application Stream

Module Streams

Module Profiles

Manage Modules with DNF

Guided Exercise

Install and Update Software Packages with DNF

Enable DNF Software Repositories

Extra Packages for Enterprise Linux

Enable Red Hat Software Repositories

Add DNF Repositories

RPM Configuration Packages for Local Repositories

Guided Exercise

Enable DNF Software Repositories

Summary

1. Describe the tools Red Hat provides to entitle machines to product subscriptions, get updates to software packages, and track information about support contracts and subscriptions that the systems use.
2. Describe the format and naming scheme of RPM packages.
3. Demonstrate how the rpm command is use to query information about software packages.
4. Demonstrate how the dnf command is used to install, update, remove, and query software packages.
5. Describe the benefits of Application Streams in Red Hat Enterprise Linux.

Resources

• Introducing Application Streams in RHEL 8
• How to Register, Subscribe, and Enable Repos on a RHEL server
• Backporting
• How to create a Linux RPM package
• RPM and GPG: How to verify Linux packages before installing them
• Extra Packages for Enterprise Linux (EPEL)
• What's the deal with Flatpak? (Linux Crash Course Series)
• Linux Packaging Formats Explained

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