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Here is a good references for using OpenShift:

Custom nftable firewall rules in OpenShift: https://access.redhat.com/articles/7090422

It’s a supported method for implementing custom nftables firewall rules in OpenShift clusters. It is intended for cluster administrators who are responsible for managing network security policies within their OpenShift environments.

Red Hat has updated the Source-to-Image (S2I) Builder Image to v1.5.0. It now supports FIPS builds on IBM Power, see the release tag for more details tag

You can learn more about using it at Source-to-image docs.

Per the docs you can follow the instructions:

1. Log in to the OpenShift Container Platform web console using your login credentials. The default view for the OpenShift Container Platform web console is the Administrator perspective.
2. Use the perspective switcher to switch to the Developer perspective.
3. In the +Add view, use the Project drop-down list to select an existing project or create a new project.
4. Click All services in the Developer Catalog tile.
5. Click Builder Images under Type to see the available S2I images.

Good luck with your builds

The mirror registry for Red Hat OpenShift is a small-scale container registry included with OpenShift Container Platform subscriptions. As of 4Q 2024, you can now use it with ppc64le.

With the third new release this year, Red Hat OpenShift4.17 is now generally available including for IBM® Power®. You can read the release notes here and find the guide for installing OpenShift 4.17 on Power here. This release builds on features included in Red Hat OpenShift 4.15 and 4.16, including an important update to multi-architecture compute that helps clients automate their modernization journeys with Power. Other updates and enhancements for clients deploying on Power focus on scalability, resource optimization, security, developer and system administrator productivity, and more. Here is an overview of key new features and improvements specifically relevant to Power: 

https://community.ibm.com/community/user/power/blogs/brandon-pederson1/2024/11/13/red-hat-openshift-417-now-available-on-ibm-power?CommunityKey=f969f542-83d4-494b-b0b2-018965813d96

Multiarch Tuning Operator 

Included with Red Hat OpenShift 4.17 is an update to multi-architecture compute called the Multiarch Tuning Operator. The Multiarch Tuning Operator optimizes workload management across different architectures such as IBM Power, IBM Z, and x86, including single-architecture clusters transitioning to multi-architecture environments. It allows systems administrators to handle scheduling and resource allocation across these different architectures by ensuring workloads are correctly directed to the nodes of compatible architectures. The Multiarch Tuning Operator in OpenShift 4.17 further helps clients optimize resource allocation with policies that automatically place workloads on the most appropriate architecture. This also improves system administrator productivity and is especially useful with business-critical workloads that require high performance or need specific architecture capabilities, such as data-intensive applications often found running on Power.

The scheduler-plugins has a new release v0.30.6. This feature is used in concert with the Secondary Scheduler Operator

• kube-scheduler registry.k8s.io/scheduler-plugins/kube-scheduler:v0.30.6

This one aligns the k8s version – v1.30.6