56 lines
1.7 KiB
Bash
Executable File
56 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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# ===========================================
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# 数据库备份脚本
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# 用途: 备份 PostgreSQL 数据库到本地文件
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# 建议: 每天通过 cron 执行一次
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# Crontab 示例:
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# 0 4 * * * /root/rust/rust_backend/scripts/backup-db.sh >> /root/rust/rust_backend/logs/backup.log 2>&1
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# ===========================================
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set -euo pipefail
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DB_CONTAINER="1Panel-postgresql-FtMo"
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DB_NAME="${1:-milkydata}"
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DB_USER="milkydata"
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BACKUP_DIR="/root/rust/rust_backend/backups"
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RETENTION_DAYS=7
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LOG_PREFIX="[$(date '+%Y-%m-%d %H:%M:%S')]"
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echo "$LOG_PREFIX 开始备份数据库: ${DB_NAME}"
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# 确保备份目录存在
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mkdir -p "$BACKUP_DIR"
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# 检查容器是否运行
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if ! docker ps --format '{{.Names}}' | grep -q "^${DB_CONTAINER}$"; then
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echo "$LOG_PREFIX 错误: Docker 容器 ${DB_CONTAINER} 未运行"
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exit 1
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fi
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# 执行备份（自定义格式，可压缩）
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BACKUP_FILE="${BACKUP_DIR}/${DB_NAME}_$(date +%Y%m%d_%H%M%S).dump"
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echo "$LOG_PREFIX 导出到: ${BACKUP_FILE}"
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docker exec "$DB_CONTAINER" pg_dump -U "$DB_USER" -Fc "$DB_NAME" > "$BACKUP_FILE"
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# 检查备份是否成功
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if [ -f "$BACKUP_FILE" ] && [ -s "$BACKUP_FILE" ]; then
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FILE_SIZE=$(du -h "$BACKUP_FILE" | cut -f1)
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echo "$LOG_PREFIX 备份成功: ${BACKUP_FILE} (${FILE_SIZE})"
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else
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echo "$LOG_PREFIX 错误: 备份文件为空或不存在"
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exit 1
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fi
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# 删除旧备份（保留 RETENTION_DAYS 天）
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echo "$LOG_PREFIX 清理 ${RETENTION_DAYS} 天前的旧备份..."
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find "$BACKUP_DIR" -name "${DB_NAME}_*.dump" -mtime "+${RETENTION_DAYS}" -delete
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# 记录保留的备份
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echo "$LOG_PREFIX 当前备份列表:"
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ls -lh "$BACKUP_DIR"/*.dump 2>/dev/null || echo " (无备份文件)"
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echo "$LOG_PREFIX 备份完成"
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