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Migrating from OpenShift 3 to OpenShift 4: a step-by-step method

Why you can't upgrade OpenShift 3 to 4 in place, and how to migrate workloads cleanly: inventory, target cluster, MTC, GitOps, migration waves and cutover.

Ismail Ait Zaid · October 16, 2026 · 8 min read
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