Learn how to migrate AlmaLinux 8 to 9. Our Server Management Support team is here to help you with your questions and concerns.

Migrate AlmaLinux 8 to 9 | Guide

Did you know that AlmaLinux 8 will no longer have active support after May 2024?

So, let’s stay ahead of the curve and upgrade to AlmaLinux 9 with the following steps. Before we begin, make sure you have a server or VPS running AlmaLinux 8 as well as Root access to the system.

As a golden rule, always back up your server before making major changes.

1. To begin with, make sure the system is up to date by running this command:
   # yum update -y
2. Then reboot the server.
3. Now, you can verify the successful update by checking the AlmaLinux release:

   # cat /etc/os-release 

   
4. Next, we have to download the Elevate testing repository.

   # curl https://repo.almalinux.org/elevate/testing/elevate-testing.repo -o /etc/yum.repos.d/elevate-testing.repo

5. Then, confirm the repository addition as seen here:

   # ls /etc/yum.repos.d/ | grep elevate
6. Now, it is time to import the Elevate GPG key:

   # rpm --import https://repo.almalinux.org/elevate/RPM-GPG-KEY-ELevate
7. At this point, we have to disable SELinux temporarily by changing the mode to disabled:

   # vim /etc/sysconfig/selinux
SELINUX=disabled

8. Then, reboot the system.
9. Now, disable the ZoneDrifting feature in Firewalld as seen below:

   # vim /etc/firewalld/firewalld.conf
AllowZoneDrifting=no

10. Finally, we have to install the necessary packages for the upgrade process:

    # yum install -y leapp-upgrade leapp-data-almalinux
11. Now, run a pre-upgrade check:

    # leapp preupgrade
12. At this point, we can start the upgrade from AlmaLinux 8 to AlmaLinux 9:

    # leapp upgrade

13. Next, reboot the system after completing the upgrade.

After the above steps, check the updated AlmaLinux version once again.

With these steps, our AlmaLinux 8 server gracefully transitions to AlmaLinux 9.

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Conclusion

In brief, our Support Experts demonstrated how to migrate AlmaLinux 8 to 9.