Migrating from CentOS 8 to AlmaLinux 8

Since January 2022, support for CentOS 8 has ended. Installation and operation of the control panel on a server with CentOS 8 is not supported.

To continue working with the control panel, you can migrate to AlmaLinux OS using the almalinux-deploy script:

1. Connect to the server with the conrol panel via SSH.
2. Check the OS version:

   cat /etc/redhat-release

3. If the OS version is lower than 8.5, change the paths to the repositories:

   sed -i -r 's|^(mirrorlist.+)$|#\1|g; s|^#baseurl=http://mirror.centos.org/\$contentdir/\$releasever/|baseurl=https://vault.centos.org/8.5.2111/|g' /etc/yum.repos.d/CentOS-*.repo

4. Update software:

   sudo yum update -y

5. Download the migration script:

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

6. Run the script:

   sudo bash almalinux-deploy.sh

   Message on successful script execution

   Migration to AlmaLinux is completed

7. If the script run fails with an error likeExample of error

   import the GPG key of the AlmaLinux repository manually and restart the script:

   sudo rpm --import https://repo.almalinux.org/almalinux/RPM-GPG-KEY-AlmaLinux && sudo bash almalinux-deploy.sh

8. Check that AlmaLinux has been installed:

   Example of reply

   AlmaLinux release 8.5 (Arctic Sphynx)

9. Check that the AlmaLinux kernel is loaded by default:

   sudo grubby --info DEFAULT | grep AlmaLinux

   Example of reply

   title="AlmaLinux (4.18.0-348.el8.x86_64) 8.5 (Arctic Sphynx)"