Rocky 9.x Upgrade from CentOS Stream to Rocky

The below steps would work both on CentOS Stream 8 and CentOS Stream 9, to convert them to Rocky 8.x or Rocky 9.x appropriately.

Update to latest packages in CentOS Stream using:

dnf update -y --allowerasing --skip-broken --nobest

Download rocky-tools git repository in /tmp

cd /tmp/
git clone https://github.com/rocky-linux/rocky-tools.git

Run the migration script

cd /tmp/rocky-tools/migrate2rocky
chmod -v +x migrate2rocky.sh
./migrate2rocky.sh -r

If there is issue with some installed packages there will be dnf output indicating package names with issues. We need to remove those packages and try again:
```
dnf remove ffmpeg-libs vlc-core vlc simplescreenrecorder
```
Ensure that you dont remove any critical package that is required on the system being migrated to Rocky. Note the names of packages being removed including the ones getting removed due to dependency. We may have to install them again later.
Reboot
```
shutdown -r now
```
Validate the new setup with Rocky Linux
Optionally reinstall the packages that were removed during migration using dnf / other appropriate methods.

Refer:

Anonymous