This is the reality for OpenShift administrators. OpenShift is a powerful Kubernetes distribution, packed with features to run workloads at scale. But with power comes risk. A security review is not optional—it is the difference between a hardened platform and a breach waiting to happen.
Access Control and RBAC
OpenShift uses Role-Based Access Control to manage permissions. Review every role and binding. Keep the principle of least privilege as your guiding rule. Disable default accounts that are not in use. Ensure service accounts have only the rights they need. Audit regularly.
Network Policies
By default, pods can talk to each other without restriction. Network Policies should define who can speak to whom. Segmentation limits attack surfaces inside the cluster. Combine with service mesh encryption for better defense.
Image Security
Only trust signed, verified container images. Use internal registries with strict access. Scan every image before deployment. OpenShift integrates with tools like Clair for vulnerability detection—enable and monitor it. Never deploy images from unknown sources.
Cluster Updates and Patching
Upgrades are not just performance improvements; they fix security holes. Keep your OpenShift cluster on supported versions. Configure automated updates for system packages. Review changelogs to understand security fixes applied.