RHEL's system roles now use Ansible roles and modules to configure, automate, and manage RHEL services. Red Hat is also continuing to integrate its Ansible DevOps program into RHEL. In addition, you can also more easily export metrics to a Grafana server for a deeper look at what's going on in your servers. With this, you can more easily identify high CPU, memory, disk, and network resource usage spikes and their causes. The updated web console also includes an enhanced-performance metrics page. Previously, you could only keep your Linux running while updating the kernel in real-time by using the shell. Returning to RHEL basics, its web console, which is based on the open-source Cockpit project, now enables you to live patch the kernel from it. Native OverlayFS as a Rootless container user: RHEL 8.5 offers better performance when building and running rootless containers, with native support for OverlayFS. Out of the box, RHEL 8.5 will check container image signatures to verify that they are, in fact, from Red Hat and haven't been tampered with or manipulated. Verify container image signatures by default: In RHEL 8.5, users can pull container images with confidence. You can use the Podman container image to help develop and run other container images. These include:Ĭontainerized Podman: The RHEL 8 Podman container image is now generally available and can help unlock the usage of Podman in cloud continuous integration/delivery (CI/CD) systems, on Windows Subsystem for Linux (WSL) 2, under Docker Desktop on macOS, and (of course) on RHEL 6, 7 and 8.

In particular, as we continue to move to a container and Kubernetes-based world, RHEL 8.5 comes with significant container improvements.

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Rhel7 docker image