Red Hat System Administration I

Instructions

1. On the serverb machine, configure a software repository to obtain updates. Name the repository errata and configure the repository in the /etc/yum.repos.d/errata.repo file. Configure the errata.repo file to use the http://content.example.com/rhel9.0/x86_64/rhcsa-practice/errata repository. Do not verify GPG signatures.

   1. Log in to the serverb machine as the student user, and switch to the root user.

      [student@workstation ~]$ ssh student@serverb
      ...output omitted...
      [student@serverb ~]$ sudo -i
      [sudo] password for student: student
      [root@serverb ~]#

   2. Create the /etc/yum.repos.d/errata.repo file with the following content:

      [errata]
      name=Red Hat Updates
      baseurl=http://content.example.com/rhel9.0/x86_64/rhcsa-practice/errata
      enabled=1
      gpgcheck=0

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2. On serverb, install the rht-system package.

   1. List the available packages for the rht-system package.

      [root@serverb ~]# dnf list rht-system
      Last metadata expiration check: 0:05:27 ago on Wed 27 Apr 2022 05:01:59 AM EDT.
      Available Packages
      rht-system.noarch     1.0.0-2             errata

   2. Install the latest version of the rht-system package.

      [root@serverb ~]# dnf install rht-system
      ...output omitted...
      Total download size: 7.5 k
      Installed size: 300
      Is this ok [y/N]: y
      ...output omitted...
      Complete!
      [root@serverb ~]#

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3. For security reasons, the serverb machine must not be able to connect to a paper printer. You can achieve this effect by removing the cups package. When finished, exit from the root shell.

   1. List the installed cups package.

      [root@serverb ~]# dnf list cups
      Last metadata expiration check: 0:08:02 ago on Wed 27 Apr 2022 05:01:59 AM EDT.
      Installed Packages
      cups.x86_64        1:2.3.3op2-13.el9      @rhel-9.0-for-x86_64-appstream-rpms
      [root@serverb ~]#

   2. Remove the cups package.

      [root@serverb ~]# dnf remove cups.x86_64
      ...output omitted...
      Remove  46 Packages
      
      Freed space: 94 M
      Is this ok [y/N]: y
      ...output omitted...
      Complete!

   3. Exit from the root shell.

      [root@serverb ~]# exit
      [student@serverb ~]$

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4. The start script downloads the rhcsa-script-1.0.0-1.noarch.rpm package in the /home/student directory on the serverb machine.

   Confirm that the rhcsa-script-1.0.0-1.noarch.rpm package is available on serverb, and install it by using root privileges. Verify that the package is installed. Exit from the serverb machine.

   1. Verify that the rhcsa-script-1.0.0-1.noarch.rpm package is available on serverb.

      [student@serverb ~]$ rpm -q -p rhcsa-script-1.0.0-1.noarch.rpm -i
      Name        : rhcsa-script
      Version     : 1.0.0
      Release     : 1
      Architecture: noarch
      Install Date: (not installed)
      Group       : System
      Size        : 593
      License     : GPL
      Signature   : (none)
      Source RPM  : rhcsa-script-1.0.0-1.src.rpm
      Build Date  : Wed 23 Mar 2022 08:24:21 AM EDT
      Build Host  : localhost
      Packager    : Bernardo Gargallo
      URL         : http://example.com
      Summary     : RHCSA Practice Script
      Description :
      A RHCSA practice script.
      The package changes the motd.

   2. Install the rhcsa-script-1.0.0-1.noarch.rpm package.

      [student@serverb ~]$ sudo dnf install \
      rhcsa-script-1.0.0-1.noarch.rpm
      [sudo] password for student: student
      Last metadata expiration check: 0:11:06 ago on Wed 27 Apr 2022 05:01:59 AM EDT.
      Dependencies resolved.
      ==========================================================================
       Package          Architecture      Version        Repository        Size
      ==========================================================================
      Installing:
       rhcsa-script     noarch            1.0.0-1        @commandline      7.5 k
      
      Transaction Summary
      ==========================================================================
      Install  1 Package
      
      Total size: 7.5 k
      Installed size: 593
      Is this ok [y/N]: y
      Downloading Packages:
      Running transaction check
      Transaction check succeeded.
      Running transaction test
      Transaction test succeeded.
      Running transaction
        Preparing        :                                                 1/1
        Running scriptlet: rhcsa-script-1.0.0-1.noarch                     1/1
        Installing       : rhcsa-script-1.0.0-1.noarch                     1/1
        Running scriptlet: rhcsa-script-1.0.0-1.noarch                     1/1
        Verifying        : rhcsa-script-1.0.0-1.noarch                     1/1
      
      Installed:
        rhcsa-script-1.0.0-1.noarch
      
      Complete!

   3. Verify that the package is installed.

      [student@serverb ~]$ rpm -q rhcsa-script
      rhcsa-script-1.0.0-1.noarch
      [student@serverb ~]$

   4. Return to the workstation system as the student user.

      [student@serverb ~]$ exit
      logout
      Connection to serverb closed.
      [student@workstation ~]$

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