DB のバックアップと復元確認のスクリプトを追加（NAS の DSM タスクスケジューラ用）

2026-10-04 16:03:54 +09:00
parent d4346c06fe
commit fb3e128757
6 changed files with 733 additions and 6 deletions
@@ -0,0 +1,73 @@
+#!/bin/bash
+# tver DB復元確認（Synology ds923pで手動実行）
+#
+# 配置先: /volume1/docker/tver-db/restore-test.sh
+# 実行コマンド: bash /volume1/docker/tver-db/restore-test.sh
+# 最新のバックアップを同じPostgreSQLコンテナ内の一時DBへ復元し、主要4表の
+# 行数を本番DBと比較する。本番DBにはSELECTだけを実行する。
+
+set -euo pipefail
+
+BACKUP_DIR="${BACKUP_DIR:-/volume1/backups/tver}"
+LOG_FILE="${LOG_FILE:-${BACKUP_DIR}/restore-test.log}"
+CONTAINER="${CONTAINER:-tver-postgres}"
+DB_USER="${DB_USER:-tver}"
+DB_NAME="${DB_NAME:-tver}"
+RESTORE_DB="${RESTORE_DB:-tver_restore_test}"
+DOCKER="${DOCKER:-$(command -v docker || printf '/usr/local/bin/docker')}"
+TABLES=(download_jobs subscriptions known_episodes schema_migrations)
+
+mkdir -p "$BACKUP_DIR"
+touch "$LOG_FILE"
+chmod 600 "$LOG_FILE"
+exec > >(tee -a "$LOG_FILE") 2>&1
+
+if [[ "$RESTORE_DB" == "$DB_NAME" ]]; then
+  echo "ERROR: RESTORE_DB must differ from DB_NAME" >&2
+  exit 1
+fi
+
+# 終了状態にかかわらず、一時DBの削除を最後に試みる。
+cleanup() {
+  status=$?
+  trap - EXIT
+  set +e
+  "$DOCKER" exec "$CONTAINER" dropdb --force --if-exists -U "$DB_USER" "$RESTORE_DB"
+  cleanup_status=$?
+  if ((status != 0)); then
+    echo "復元確認に失敗"
+    exit "$status"
+  fi
+  exit "$cleanup_status"
+}
+trap cleanup EXIT
+
+LATEST="$(find "$BACKUP_DIR" -name 'tver_*.sql.gz' -type f -print | sort | tail -n 1)"
+if [[ -z "$LATEST" ]]; then
+  echo "ERROR: backup dump was not found in $BACKUP_DIR" >&2
+  exit 1
+fi
+
+echo "復元確認を開始: $LATEST"
+"$DOCKER" exec "$CONTAINER" dropdb --force --if-exists -U "$DB_USER" "$RESTORE_DB"
+"$DOCKER" exec "$CONTAINER" createdb -U "$DB_USER" "$RESTORE_DB"
+
+gzip -dc "$LATEST" \
+  | "$DOCKER" exec -i "$CONTAINER" psql -q -o /dev/null -v ON_ERROR_STOP=1 -U "$DB_USER" -d "$RESTORE_DB"
+
+for table in "${TABLES[@]}"; do
+  query="SELECT count(*) FROM public.${table};"
+  production_count="$("$DOCKER" exec "$CONTAINER" psql -A -t -q -U "$DB_USER" -d "$DB_NAME" -c "$query" | tr -d '[:space:]')"
+  restored_count="$("$DOCKER" exec "$CONTAINER" psql -A -t -q -U "$DB_USER" -d "$RESTORE_DB" -c "$query" | tr -d '[:space:]')"
+  if [[ ! "$production_count" =~ ^[0-9]+$ || ! "$restored_count" =~ ^[0-9]+$ ]]; then
+    echo "ERROR: $table の行数を取得できませんでした: production=$production_count restore=$restored_count" >&2
+    exit 1
+  fi
+  if [[ "$production_count" != "$restored_count" ]]; then
+    echo "ERROR: $table の行数が一致しません: production=$production_count restore=$restored_count" >&2
+    exit 1
+  fi
+  echo "OK: $table production=$production_count restore=$restored_count"
+done
+
+echo "復元確認に成功: $LATEST"