5.7.1 Download RHEL 8.0 iso image
This section is covered in the BPB book, Installation and Configuration of IBM Watson Analytics and StoredIQ in Chapter 1, Getting started with IBM Resources for Analytics, section 1.1, Red Hat Linux RHEL 8.0 and Chapter 8, IBM Cloud Private System, section 8.2.1, RHEL 8 download and install (BPB Publications, ISBN 9390684498, 9789390684496).
5.7.2 Checking available repositories
This section is covered in the BPB book, Installation and Configuration of IBM Watson Analytics and StoredIQ in Chapter 9: VMware System Platform, section 9.3: Installing an operating system from a disk .iso imageBase (BPB Publications, ISBN 9390684498, 9789390684496).
First, it is helpful to set a FQDN for the RHEL 8.0 server you have installed so that it can be distinguished easily on the Red Hat website from any other servers you have registered. (Remember, you are allowed 16 servers for free.). Use the command:
hostnamectl set-hostname server.domain
Where server.domain is the FQDN.
If you have not registered your system during the RHEL 8 installation, you can do it now by applying the following command as the root user. The whole process can be completed in one step by using the following command:
subscription-manager register –username username –password password –auto-attach
Where you should change username and password with the username and password used for your RHEL customer portal. If you want to enable more repositories for your RHEL installation, you can edit the following file:
vi /etc/yum.repos.d/redhat.repo
Within that file, you will see a long list of available repos. To enable certain repo, changed 0 to 1 next to enabled.
5.7.3 Korn shell and user creation
The following is a link to a useful Red Hat publication:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/pdf/configuring_basic_system_settings/red_hat_enterprise_linux-8-configuring_basic_system_settings-en-us.pdf
This can be used to download a pdf document, Red Hat Enterprise Linux 8, Configuring basic system settings (last updated: 2022-09-29).
See the Red Hat pdf, above, Chapter 7: Getting Started With Managing User Accounts and Chapters 19 to 23 for full coverage of this section. To create a new user account, for example, user wasadm:
useradd wasadm
To assign a new password to a user account wasadm:
passwd wasadm
To add a user to a group use:
usermod -a -G wasgrp wasadm
To add a user to groups wasgrp and wheel use:
usermod -a -G wasgrp,wheel wasadm
or to append the wheel group to give the user access to sudo:
usermod –append -G wheel wasadm