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Working with Essential Red Hat Linux System Administration Tools - yum

In this lab we are going to make sure we have the minimum knowledge we need in order to successfully pass the RHCE on RHEL8. In this lab we'll cover `yum/dnf` and the new Application Stream module. Since this is a new tool with RHEL8 it's normal to not understand it 100%, but this lab will help reinforce how to use the Application Stream. *This course is not approved or sponsored by Red Hat.*

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Path Info

Level
Clock icon Beginner
Duration
Clock icon 15m
Published
Clock icon Oct 18, 2019

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Table of Contents

  1. Challenge

    Install PostgreSQL Version 9.6

    If you run yum module list you'll note that postgresql 10 has a [e] next to it, indicating it's installed.

    Since our task is to install postgresql 9.6 we need to fix that. Note that yum and dnf are interchangeable commands:

    dnf remove postgresql
dnf module reset postgresql
dnf module enable postgresql:9.6
dnf install postgresql

    Those commands will remove the installed postgresql-10, reset the application stream, set the correct version for the application stream, and then install the correct version of postgresql.

  2. Challenge

    Install httpd

    While Apache does have an Application Stream, there aren't multiple versions. On top of that, our task doesn't specify a version anyway.

    So it's easy to just yum -y install httpd and call it done.

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Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

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