Category: AlmaLinux

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AlmaLinux Linux Red Hat

Converting from CentOS 8 to AlmaLinux 8

This is more so that I can remember.

You need to get to the latest update level on the CentOS systems. If the systems have been unloved you will likely find that they can no longer access the repos servers.

Change the baseurl to http://vault.centos.org/, comment out the mirrorlist as per this image.

You’ll need to do this in at least :

/etc/yum.repos.d/CentOS-Linux-BaseOS.repo
/etc/yum.repos.d/CentOS-Linux-AppStream.repo

Then you can perform the required upgrade :

dnf update
dnf upgrade

Then I suggest re-booting and you can then perform the AlmaLinux migration by :

curl -O https://raw.githubusercontent.com/AlmaLinux/almalinux-deploy/master/almalinux-deploy.sh
bash almalinux-deploy.sh

Then the following should show that you’ve converted OK

cat /etc/os-release
cat /etc/os-release
NAME="AlmaLinux"
VERSION="8.6 (Sky Tiger)"
ID="almalinux"
ID_LIKE="rhel centos fedora"
VERSION_ID="8.6"
PLATFORM_ID="platform:el8"
PRETTY_NAME="AlmaLinux 8.6 (Sky Tiger)"
ANSI_COLOR="0;34"
LOGO="fedora-logo-icon"
CPE_NAME="cpe:/o:almalinux:almalinux:8::baseos"
HOME_URL="https://almalinux.org/"
DOCUMENTATION_URL="https://wiki.almalinux.org/"
BUG_REPORT_URL="https://bugs.almalinux.org/"

ALMALINUX_MANTISBT_PROJECT="AlmaLinux-8"
ALMALINUX_MANTISBT_PROJECT_VERSION="8.6"
REDHAT_SUPPORT_PRODUCT="AlmaLinux"
REDHAT_SUPPORT_PRODUCT_VERSION="8.6"