998211c483
- 从服务器拉取完整代码 - 按框架规范整理项目结构 - 配置 Drone CI 测试环境部署 - 包含后端(FastAPI)、前端(Vue3)、管理端 技术栈: Vue3 + TypeScript + FastAPI + MySQL
145 lines
4.1 KiB
Bash
Executable File
145 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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# 考陪练系统数据库自动备份脚本
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# 作者: AI Assistant
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# 日期: 2025-09-23
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set -e # 遇到错误立即退出
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# 配置变量
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BACKUP_DIR="/root/aiedu/kaopeilian-backend/backups"
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CONTAINER_NAME="kaopeilian_mysql"
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DB_NAME="kaopeilian"
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DB_USER="root"
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DB_PASSWORD="Kaopeilian2025!@#"
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DATE=$(date +%Y%m%d_%H%M%S)
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BACKUP_FILE="${BACKUP_DIR}/kaopeilian_backup_${DATE}.sql"
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LOG_FILE="${BACKUP_DIR}/backup.log"
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RETENTION_DAYS=30 # 保留30天的备份
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# 创建备份目录
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mkdir -p "${BACKUP_DIR}"
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# 日志函数
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log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "${LOG_FILE}"
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}
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# 检查Docker容器是否运行
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check_container() {
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if ! docker ps | grep -q "${CONTAINER_NAME}"; then
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log "ERROR: MySQL容器 ${CONTAINER_NAME} 未运行"
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exit 1
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fi
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}
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# 执行数据库备份
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backup_database() {
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log "开始备份Docker容器中的数据库 ${DB_NAME}..."
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# 检查容器是否运行
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if ! docker ps | grep -q "${CONTAINER_NAME}"; then
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log "ERROR: MySQL容器 ${CONTAINER_NAME} 未运行"
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return 1
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fi
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# 使用docker exec执行mysqldump，将输出重定向到宿主机文件
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if docker exec "${CONTAINER_NAME}" mysqldump \
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-u"${DB_USER}" \
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-p"${DB_PASSWORD}" \
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--single-transaction \
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--routines \
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--triggers \
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--events \
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--hex-blob \
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--default-character-set=utf8mb4 \
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--lock-tables=false \
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--add-drop-database \
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--create-options \
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"${DB_NAME}" > "${BACKUP_FILE}" 2>/dev/null; then
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# 检查备份文件大小
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if [ -f "${BACKUP_FILE}" ] && [ -s "${BACKUP_FILE}" ]; then
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BACKUP_SIZE=$(du -h "${BACKUP_FILE}" | cut -f1)
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log "备份完成: ${BACKUP_FILE} (大小: ${BACKUP_SIZE})"
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# 验证备份文件内容（检查是否包含CREATE DATABASE语句）
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if grep -q "CREATE DATABASE" "${BACKUP_FILE}"; then
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log "备份文件验证成功"
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return 0
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else
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log "WARNING: 备份文件可能不完整"
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return 0 # 仍然算作成功，但记录警告
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fi
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else
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log "ERROR: 备份文件为空或不存在"
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rm -f "${BACKUP_FILE}"
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return 1
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fi
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else
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log "ERROR: 数据库备份失败"
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return 1
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fi
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}
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# 压缩备份文件
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compress_backup() {
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if [ -f "${BACKUP_FILE}" ]; then
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log "压缩备份文件..."
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gzip "${BACKUP_FILE}"
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COMPRESSED_FILE="${BACKUP_FILE}.gz"
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COMPRESSED_SIZE=$(du -h "${COMPRESSED_FILE}" | cut -f1)
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log "压缩完成: ${COMPRESSED_FILE} (大小: ${COMPRESSED_SIZE})"
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fi
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}
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# 清理过期备份
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cleanup_old_backups() {
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log "清理 ${RETENTION_DAYS} 天前的备份文件..."
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find "${BACKUP_DIR}" -name "kaopeilian_backup_*.sql.gz" -mtime +${RETENTION_DAYS} -delete
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find "${BACKUP_DIR}" -name "kaopeilian_backup_*.sql" -mtime +${RETENTION_DAYS} -delete
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log "过期备份清理完成"
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}
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# 发送备份状态通知（可选）
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send_notification() {
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local status=$1
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local message=$2
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# 这里可以集成邮件、钉钉、微信等通知方式
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log "通知: ${status} - ${message}"
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# 示例：写入状态文件供监控系统读取
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echo "{\"timestamp\":\"$(date -Iseconds)\",\"status\":\"${status}\",\"message\":\"${message}\"}" > "${BACKUP_DIR}/backup_status.json"
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}
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# 主函数
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main() {
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log "========== 数据库备份开始 =========="
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# 检查容器状态
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check_container
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# 执行备份
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if backup_database; then
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# 压缩备份
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compress_backup
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# 清理过期备份
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cleanup_old_backups
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# 发送成功通知
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send_notification "SUCCESS" "数据库备份成功完成"
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log "========== 数据库备份完成 =========="
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exit 0
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else
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# 发送失败通知
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send_notification "FAILED" "数据库备份失败"
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log "========== 数据库备份失败 =========="
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exit 1
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fi
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}
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# 执行主函数
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main "$@"
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