How to Migrate from centos 8 to Rocky Linux 8
Rocky Linux is led by Gregory Kurtzer, founder of the CentOS project.Rocky Linux is a Linux distribution that is intended to be a downstream, complete binary-compatible release using the Red Hat Enterprise Linux operating system source code and also support for CentOS Linux 8 has been cut short, from December 31, 2029 to December 31, 2021.
In this guide we will upgrade centos 8 server to Rocky Linux 8.
Before upgrading to Rocky Linux, it will be better to take backup of importtant data like your website data and configuration files etc. while upgradation if your server crashes, you can restore from backup.
Also Read -> How to Install Docker and Docker Compose on Rocky Linux
Step1: update centos 8 to Latest version
Just upgrade your current CentOS 8 Linux system to latest available version using dnf commands
sudo dnf update sudo dnf upgrade
once upgrade is done, reboot your server.
Now check centos 8 version
Also Read -> How to Install Varnish with Apache on Centos 7
Step 2: download and run migration script
you can download the script called migrate2rocky which is developed by Rocky developers and it is available on the Github page.
curl -O https://raw.githubusercontent.com/rocky-linux/rocky-tools/main/migrate2rocky/migrate2rocky.sh
once script is downloaded, set the permission to script to execute it.
sudo chmod +x migrate2rocky.sh
Now run the script to migrate from centos 8 to Rocky linux
sudo bash migrate2rocky.sh -r
The script will automatically change the CentOS 8 Linux repositories, GPG keys and others. The script may take some time and its depends upon your Internet connection speed and system configuration etc.
The script also changes related to centos 8 system packages to rocky linux packages such as logos,back ground and license etc. once everything is done it dispalys below message.
Done, please reboot your system. A log of this installation can be found at /var/log/migrate2rocky.log
To reboot, run below command.
once system is rebooted, check the OS version with the following command.
NAME="Rocky Linux" VERSION="8.4 (Green Obsidian)" ID="rocky" ID_LIKE="rhel fedora" VERSION_ID="8.4" PLATFORM_ID="platform:el8" PRETTY_NAME="Rocky Linux 8.4 (Green Obsidian)" ANSI_COLOR="0;32" CPE_NAME="cpe:/o:rocky:rocky:8.4:GA" HOME_URL="https://rockylinux.org/" BUG_REPORT_URL="https://bugs.rockylinux.org/" ROCKY_SUPPORT_PRODUCT="Rocky Linux" ROCKY_SUPPORT_PRODUCT_VERSION="8"
That's it. Now we have successfully migrated CentOS Linux 8 to Rocky Linux 8.