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Three independent bugs made `abra app restore` leave the stack broken:
1. ClickHouse: schema_migrations is a TinyLog table and clickhouse-backup
can only FREEZE MergeTree data - it backed up the table schema but
not its rows, so a restore emptied the migration ledger. The next app
boot re-ran every IngestRepo migration against the fully-built tables
and crash-looped (DUPLICATE_COLUMN: utm_medium) - the post-restore 502
in CI build 237. Fix: export the ledger to TSV into the backup dir
(rides in the snapshotted backup/events path) in the backup pre-hook,
reload it in the restore post-hook.
2. App restart policy: condition was on-failure, but when postgres is
disrupted under the app the BEAM supervision tree escalates and Erlang
exits GRACEFULLY (status 0) - swarm marks the task Complete and never
restarts it (reproduced: app stranded at 0/1). Fix: condition any.
3. pg_restore: --clean without --if-exists exits 1 when a dropped object
is absent ("errors ignored"), killing the && chain and leaving the
dump behind. Fix: --if-exists, plus pg_terminate_backend afterwards so
the app pooled connections reconnect against the recreated objects.
Validated on a dev deploy: marker + truncated ClickHouse events both
return on restore, migration ledger intact (17 rows), post-restore event
ingestion for a new site works, and an app reboot after restore migrates
cleanly. Known cosmetic caveat: until the app is restarted, its Postgrex
type cache holds stale OIDs and background Oban jobs log "cache lookup
failed for type" - ingestion and serving are unaffected; an operator
restart after a restore clears it.
plausible
Status: Work in progress
- Category: Apps
- Status: 1, alpha
- Image:
plausible/analytics, 4, upstream - Healthcheck:
- Backups: Yes
- Email: No
- Tests:
- SSO: No
Basic usage
- Set up Docker Swarm and
abra - Deploy
coop-cloud/traefik abra app new ${REPO_NAME} --secrets(optionally with--passif you'd like to save secrets inpass)abra app config YOURAPPDOMAIN- be sure to change$DOMAINto something that resolves to your Docker swarm boxabra app deploy YOURAPPDOMAIN- Open the configured domain in your browser to finish set-up