A school district upgrades a cluster operator and must roll forward CRD schemas carefully. Why does upgrade order and compatibility matter?
Select an answer to reveal the explanation.
Short Explanation
Upgrading the operator is like revising the permit form while old permits are still on file—schema changes need a careful sequence. Apply compatible CRD updates with the controller version so existing CRs do not strand. Blind deletes of etcd are not the upgrade plan.
Full Explanation
Operator releases often bundle CRD OpenAPI schema and version changes with controller images. Applying an incompatible CRD or controller first can leave custom resources that fail validation or reconciliation. Administrators should follow the operator’s upgrade notes for CRD and workload ordering.