Reboot freeze after CentOS 7 -> AlmaLinux 8 migration

General Discussion
6

I didn’t get any good advice from Alma or Hetzner forums, so I changed the tactics.

  1. Backed up all the sites and took notes of all generic settings (e.g. firewall ports).
  2. Moved the backup files to another server with SCP
  3. Rebuilt the server with AlmaLinux 9
  4. Did basic hardening for the server (SSH port access, firewall etc.)
  5. Installed Virtualmin
  6. Moved the backup files back with SCP
  7. Restored the sites

It went pretty well. This guide was really helpful:
https://www.virtualmin.com/documentation/system/migrate/

I will handle my other servers with the same procedure.

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