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Four commands that move a stack from its old layout into a new structure across major versions: export without changing the source's data, import each store the way its version allows, verify what really arrived, and rename modules while moving their data along.
Three commands that back up a running Docker stack — PostgreSQL, MinIO, and Elasticsearch — without downtime, restore it to any point, and keep retention safe, with exit codes that say how much a failure matters.
Its software reached the end of support, and its records must outlive it. One component rewrote data as it read it, so the migration copies rather than converts — an operation with no rollback has to be survivable, not merely careful.
A Business Continuity Plan stated as two numbers — an RPO of six hours and an RTO of seconds for the data — and the few small scripts behind them: full and incremental backups, one technique per data store, restore as the only test that counts, and config treated as data.
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