Upgrade/Convert Centos To Alma Linux

Upgrade/Convert Centos To Alma Linux

^{Created: 2023-11-08 02:27:31 | Last modified: 2023-11-08 03:03:55}
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Instructions with how to upgrade your Centos 8 Linux installation to Alma Linux

As Centos8 is no longer supported and a number of users are not wanting to move to Centos Stream, an option is to upgrade/convert the Centos installation to Alma Linux. Alma Linux is binary compatible with Centos just like Red Hat Linux previously was. To get started, follow the instructions below;

Note: you may need to use sudo if you don't already have elevated shell access.

Update the system

yum -y update

Get the Alma deploy script

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

If using a version of Centos prior to 8.4 upgrade mirror list and run a yum update. If running a version later than 8.4 you can skip this step.

bash almalinux-deploy.sh -f
dnf update -y
reboot

Run the script

bash almalinux-deploy.sh

Check for any errors and then reboot

reboot

Once the system is rebooted, confirm you are running the correct version

cat /etc/redhat-release

Check that the system boots into Alma Linux using the Alma kernel

grubby --info DEFAULT | grep AlmaLinux