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How to migrate from CentOS 8 to Rocky Linux 8.4

Hello, friends. We recently published the news that Rocky Linux 8.4 was available with a fully stable ISO. We are very happy about it because it joins AlmaLinux as a guarantor that the legacy of CentOS will not die. So, now in this post, we will tell you how to migrate from CentOS 8 to Rocky Linux 8.4.

As we all know Rocky Linux is one of the most anticipated distributions of this year. The so-called, with permission of AlmaLinux OS, the replacement for CentOS, is finally approaching us with a fully stable and production-ready version.

Ideally, if you are starting a new project, you will have to download the ISO image and install it from scratch, but if you have a production server, this may not be ideal. So the migration process although easy can always be problematic.

So, let’s get started.

Migrate from CentOS 8 to Rocky Linux 8.4

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The process is quite simple thanks to a script that the community has prepared. So it shouldn’t take that long.

First, you have to completely upgrade your system. This step is essential for the success of the process.

sudo dnf upgrade

Then, reboot the system to make sure all changes are applied including kernel-related changes.

sudo reboot

After the system reboots, we can now download the script.

curl -O https://raw.githubusercontent.com/rocky-linux/rocky-tools/main/migrate2rocky/migrate2rocky.sh
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 27069  100 27069    0     0   128k      0 --:--:-- --:--:-- --:--:--  128k

Now give the script permissions to run

chmod +x migrate2rocky.sh

Now, we can run it locally with the command

sudo bash migrate2rocky.sh -r

This will start the whole migration process which may take some time depending on your computer resources and connection speed.

At the end, you will see a message like the following

1.- Migrate from CentOS to Rocky Linux
1.- Migrate from CentOS to Rocky Linux

And finish the process by rebooting the system

sudo systemctl reboot

When it starts, you can verify the migration by running

cat /etc/os-release
2.- Rocky Linux OS
2.- Rocky Linux OS

So, enjoy it.

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