OpenShift Upgrade Deep Dive: 4.19 4.20 (Step-by-Step + What Happens Under the Hood)
Upgrading Red Hat OpenShift isn’t just about running oc adm upgrade. In this guide, I’ll walk through: Real Upgrade path 4.19 to 4.20 Handling AdminAckRequired blockers Setting upgrade channels properly Understanding how OpenShift upgrades nodes (masters + workers) Why Pod Disruption Budgets (PDBs)
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