feat(cmangos-database): nightly logical (mysqldump) backups - #4109
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xunholy wants to merge 1 commit into
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feat(cmangos-database): nightly logical (mysqldump) backups#4109xunholy wants to merge 1 commit into
xunholy wants to merge 1 commit into
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Adds restorable SQL-dump backups of the irreplaceable game DBs to complement the existing crash-consistent RBD snapshot. The live DBs are mixed-engine (classiccharacters: 79 InnoDB + 13 MyISAM; classicrealmd: mostly small MyISAM), and MyISAM isn't safe to restore from a raw volume snapshot taken mid-write — a logical dump is. - pvc-dumps.yaml: dedicated 10Gi PVC for the dumps - backup-cronjob.yaml: nightly (03:00) mariadb-dump of classicrealmd + classiccharacters, gzipped + timestamped, keep newest 7 per DB. Uses the app user (SELECT is enough for --single-transaction --no-tablespaces; verified against the live DB). classicmangos (world) is omitted — it's reconstructible via init-db + the in-repo migrations; classiclogs is disposable. - replicationsource-dumps.yaml: VolSync ships the dumps PVC to Kopia at 05:00, reusing the existing repo secret; retain daily:7 weekly:4. --single-transaction is consistent for the InnoDB bulk (all player rows) with no write-blocking; the few small MyISAM tables are best-effort. Upgrade to a privileged backup user + --lock-all-tables once live root is rotated (after the PTR DB split lands and decouples the on-main db-init from root).
Deploying with
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| Status | Name | Latest Commit | Preview URL | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! View logs |
k8s-gitops | 33e463a | Commit Preview URL Branch Preview URL |
Jun 25 2026, 04:07 AM |
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What
Adds restorable SQL-dump backups of the irreplaceable game DBs, complementing the existing hourly crash-consistent RBD snapshot.
Why
The live DBs are mixed-engine (verified on the running instance):
classiccharactersclassicrealmdMyISAM tables aren't safe to restore from a raw volume snapshot taken mid-write — a logical dump is. The RBD snapshot stays as the fast-restore tier; these dumps are the correctness tier.
Changes (all in the
cmangos-databaseapp)pvc-dumps.yaml— dedicated 10Gi PVC for the dumps.backup-cronjob.yaml— nightly (03:00)mariadb-dumpofclassicrealmd+classiccharacters, gzipped + timestamped, keep newest 7 per DB. Runs as a non-root user; uses the app user (SELECTis enough for--single-transaction --no-tablespaces).replicationsource-dumps.yaml— VolSync ships the dumps PVC to Kopia at 05:00, reusing the existing repo secret;retain: daily 7 / weekly 4.classicmangos(world) is intentionally not dumped — reconstructible viainit-db+ the in-repo migration Jobs.classiclogsis disposable.Consistency note
--single-transactiongives a consistent snapshot of the InnoDB bulk (all player rows) with no write-blocking; the few small MyISAM tables are best-effort. Upgrade path: a privileged backup user +--lock-all-tablesonce live root is rotated (after the PTR DB split decouples the on-maindb-initfrom root=password).Validation
classicrealmddumped 425 KB gzipped of real data;classiccharactersschema dumped exit 0. SoSELECTsuffices.kustomize buildapp dir → CronJob + dumps PVC + dumps ReplicationSource render$$-escaping de-escaped andbash -n-checked → valid runtime scripthttps://claude.ai/code/session_01T37E9UJr2ymcGhQoV8Yq93