RHCOS
Red Hat Enterprise Linux CoreOS: container-optimized host OS for OpenShift clusters, automatically managed by the OpenShift installer.
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What is this technology for?
Its role in production environments and why it is taught in our curriculums.
RHCOS is the container-optimized operating system that powers OpenShift cluster nodes. Immutable and automatically managed by the OpenShift installer (IPI/UPI), it provides a secure, consistent and self-healing host foundation for all cluster workloads.
What you will learn
The hands-on skills you will gain on this technology in our curriculums.
- Understand the RHCOS architecture and immutable host model
- Plan and execute an automated cluster installation with IPI/UPI
- Validate the post-installation state of RHCOS nodes
- Troubleshoot RHCOS nodes using Ignition and machine configs
Latest News & Ecosystem Updates
Recent innovations, major releases, and key industry milestones in the ecosystem.
Adoption of Linux 6.12 LTS Kernel & Real-Time SELinux Hardening
Ultra-fast Worker node boot times and reinforced isolation for container workloads in sovereign environments.
Optimized Atomic Upgrades via bootc & ostree v2
Instant rollbacks and declarative OS image management adhering strictly to OCI container specifications.
Featured in the curriculum
Find this technology in the following modules of our Red Hat certified curriculums.
AS200 — New DevOps Platform Engineer
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OpenShift Installation Lab
DO322 · Module 7 — AS200
AS300 — AI Platform Engineer
View curriculum →
OpenShift Installation Lab
DO322 · Module 6 — AS300
