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How to Upgrade RHEL 8.3 to RHEL 8.4 (Quick Guide)
If you are a Red Hat Enterprise Linux (RHEL) user, you might be wondering how to upgrade your system from RHEL 8.3 to RHEL 8.4. In this article, we will guide you through the process of upgrading your RHEL system to the latest version.
What is RHEL?
Red Hat Enterprise Linux (RHEL) is a Linux-based operating system developed by Red Hat. It is designed for enterprise-level use and is widely used in business and government organizations. RHEL is known for its stability, security, and support.
Features of RHEL 8.4
RHEL 8.4 comes with several new features and improvements, including:
– Improved security and performance
– Updated kernel and toolchain
– Improved container tools and support
– Updated Python and PHP versions
– Improved support for virtualization and cloud environments
Pros and Cons of Upgrading to RHEL 8.4
Pros:
– Improved security and performance
– Updated software versions
– Better support for virtualization and cloud environments
Cons:
– Upgrading can be time-consuming and requires some technical knowledge
– Some software may not be compatible with the new version
Steps to Upgrade RHEL 8.3 to RHEL 8.4
Before you begin the upgrade process, make sure to back up your data and configurations. It is also recommended to test the upgrade on a non-production system before performing it on a production system.
Step 1: Update your system
Before upgrading to RHEL 8.4, make sure your system is up to date by running the following command:
sudo dnf update
This will update your system to the latest version of RHEL 8.3.
Step 2: Enable the RHEL 8.4 repository
To upgrade to RHEL 8.4, you need to enable the RHEL 8.4 repository. To do this, run the following command:
sudo subscription-manager repos –enable=rhel-8-for-x86_64-baseos-eus-rpms –enable=rhel-8-for-x86_64-appstream-eus-rpms
This will enable the RHEL 8.4 repository.
Step 3: Install the upgrade tool
To upgrade to RHEL 8.4, you need to install the upgrade tool. To do this, run the following command:
sudo dnf install redhat-upgrade-tool preupgrade-assistant-contents
This will install the upgrade tool and the preupgrade assistant contents.
Step 4: Run the upgrade tool
Once you have installed the upgrade tool, run the following command to start the upgrade process:
sudo redhat-upgrade-tool –network 8.4 –instrepo=http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/
This will start the upgrade process. Follow the on-screen instructions to complete the upgrade.
Comparison Table
Here is a comparison table of RHEL 8.3 and RHEL 8.4:
| Feature | RHEL 8.3 | RHEL 8.4 |
|---|---|---|
| Kernel Version | 4.18 | 4.18 |
| Python Version | 3.6 | 3.8 |
| PHP Version | 7.2 | 7.4 |
| Container Tools | Podman 1.6 | Podman 3.0 |
| Virtualization Support | KVM | KVM |
FAQs
Q: Can I upgrade from RHEL 7 to RHEL 8.4?
A: No, you cannot upgrade from RHEL 7 to RHEL 8.4 directly. You need to upgrade to RHEL 8 first and then to RHEL 8.4.
Q: How long does the upgrade process take?
A: The upgrade process can take several hours depending on the size of your system and the speed of your internet connection.
Q: What if something goes wrong during the upgrade process?
A: If something goes wrong during the upgrade process, you can use the rollback feature to revert to your previous version of RHEL.
Conclusion
Upgrading your RHEL system to the latest version is important to ensure that you have access to the latest features and security updates. By following the steps outlined in this article, you can upgrade your system from RHEL 8.3 to RHEL 8.4 quickly and easily. Remember to back up your data and configurations before beginning the upgrade process and test the upgrade on a non-production system first.
