RHCSA RHEL 8 – Practice on the go

To get to the Hostinger VPS use the special link here to get 60% off: https://hostinger.com/csg

PuTTY from here: https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html

KiTTY here:

https://www.fosshub.com/KiTTY.html

Notes from the video:

Get ready to upgrade

# yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

# yum -y install rpmconf yum-utils

Resolve all config stuff.

# rpmconf -a

Packages you might not need/require, remove if something doesn’t seem to be required.

# package-cleanup --leaves

# package-cleanup --orphans

Install DNF.

# yum -y install dnf

Remove yum

# dnf -y remove yum yum-metadata-parser

# rm -Rf /etc/yum

Update the system

# dnf -y upgrade

Install new versions:

# dnf -y upgrade http://mirror.bytemark.co.uk/centos/8/BaseOS/x86_64/os/Packages/centos-release-8.0-0.1905.0.9.el8.x86_64.rpm

Upgrade EPEL

# dnf -y upgrade https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

Dnf clean

# dnf clean all

Remove definitely conflicting stuff.

# rpm -e --nodeps sysvinit-tools

Try to run the upgrade

# dnf -y --releasever=8 --allowerasing --setopt=deltarpm=false distro-sync

Process new configs

# rpmconf -a

Ensure kernel is properly installed

# rpm -e kernel-core dnf -y install kernel-core

Install the new packages that is in the Core/Minimum Install:

# dnf -y groupupdate "Core" "Minimal Install"