06f56012ec
- deploy/backup.sh / deploy/restore.sh (compose service or local container; side-by-side test restore) - restore: chown copied backup for sqlservr, fail loudly on unreadable file list - README: update, backup, test-restore and rollback steps Validated locally: backup 194 MB, restored into a test DB with identical counts, test DB dropped. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
31 lines
1.8 KiB
Bash
Executable File
31 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Restore a backup made by deploy/backup.sh.
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# deploy/restore.sh backups/diwan-<stamp>.bak (replaces database "diwan"; stop the api first)
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# TARGET_DB=diwan_restoretest deploy/restore.sh <file> (restore side by side, e.g. to test a backup)
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# DB_CONTAINER as in backup.sh. Needs MSSQL_SA_PASSWORD.
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set -euo pipefail
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cd "$(dirname "$0")/.."
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[ -f .env ] && set -a && . ./.env && set +a
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: "${MSSQL_SA_PASSWORD:?set MSSQL_SA_PASSWORD}"
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BAK=${1:?usage: deploy/restore.sh <backup file>}
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TARGET=${TARGET_DB:-diwan}
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C=${DB_CONTAINER:-$(docker compose ps -q db)}
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SQL() { docker exec "$C" /opt/mssql-tools18/bin/sqlcmd -C -b -S localhost -U sa -P "$MSSQL_SA_PASSWORD" "$@"; }
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docker exec "$C" mkdir -p /var/opt/mssql/backup
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docker cp "$BAK" "$C:/var/opt/mssql/backup/restore.bak"
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docker exec -u 0 "$C" chown mssql /var/opt/mssql/backup/restore.bak # docker cp keeps the host uid; sqlservr runs as mssql
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# logical file names inside the backup, moved to files named after the target database
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FILES=$(SQL -h -1 -W -s '|' -Q "SET NOCOUNT ON; RESTORE FILELISTONLY FROM DISK = N'/var/opt/mssql/backup/restore.bak'" | awk -F'|' 'NF>2 {print $1"|"$3}')
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[ -n "$FILES" ] || { echo "could not read the backup's file list" >&2; exit 1; }
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MOVE=""
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while IFS='|' read -r logical type; do
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[ -z "$logical" ] && continue
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ext=mdf; [ "$type" = L ] && ext=ldf
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MOVE="$MOVE, MOVE N'$logical' TO N'/var/opt/mssql/data/${TARGET}_${logical}.$ext'"
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done <<< "$FILES"
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SQL -Q "IF DB_ID(N'$TARGET') IS NOT NULL ALTER DATABASE [$TARGET] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
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RESTORE DATABASE [$TARGET] FROM DISK = N'/var/opt/mssql/backup/restore.bak' WITH REPLACE, CHECKSUM$MOVE;
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ALTER DATABASE [$TARGET] SET MULTI_USER;"
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docker exec "$C" rm -f /var/opt/mssql/backup/restore.bak
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echo "restored $BAK into [$TARGET]"
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