mysql全屏终端全量、部分备份、恢复脚本

思路：
备份前会自动校验是否有需要清理的文件

两种使用方式：
./mysql_backup.sh 进入终端交互模式

./mysql_backup.sh 参数 ，案例：./mysql_backup.sh 1 ，执行全量备份

后台运行，查看日志案例：

# 后台运行全量备份，日志输出到文件
nohup ./mysql_backup.sh 1 > mysql_backup.log 2>&1 &

touch mysql_backup.sh && chmod +x mysql_backup.sh

#!/bin/bash

# MySQL备份恢复脚本
# 支持全量备份、部分库备份、备份恢复、自动清理
# Author: System Administrator
# Version: 1.0

# ===============================================
# 配置参数 - 请根据实际环境修改
# ===============================================

# MySQL连接配置
MYSQL_USER="root"           # MySQL用户名
MYSQL_PASS="cnmsb123"           # MySQL密码
MYSQL_HOST="localhost"      # MySQL主机地址，默认本机
MYSQL_PORT="3306"           # MySQL端口，默认3306

# 备份配置
BACKUP_DIR="/opt"           # 备份文件存储目录
RETENTION_DAYS=7            # 备份文件保留天数，超过此天数的备份将被自动清理

# 部分备份排除数据库配置
# 在进行部分备份时，以下数据库将被排除（不进行备份）
# 可以根据需要修改此列表，多个数据库用逗号分隔，例如：a，b，c      #代表排除a，b，c再备份
EXCLUDE_DATABASES=""

# 备份选项配置
MYSQLDUMP_OPTIONS="--single-transaction --routines --triggers --set-gtid-purged=OFF"  # mysqldump额外选项

# 颜色定义
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
PURPLE='\033[0;35m'
CYAN='\033[0;36m'
WHITE='\033[1;37m'
NC='\033[0m' # No Color

# 动画字符
SPINNER='|/-\'

# 打印带颜色的文本
print_color() {
    local color=$1
    local text=$2
    echo -e "${color}${text}${NC}"
}

# 清屏并移动光标到顶部
clear_screen() {
    clear
    printf "\033[H"
}

# 获取终端尺寸
get_terminal_size() {
    TERM_COLS=$(tput cols 2>/dev/null || echo 80)
    TERM_ROWS=$(tput lines 2>/dev/null || echo 24)
}

# 居中显示文本
center_text() {
    local text="$1"
    local color="$2"
    local padding=$(( (TERM_COLS - ${#text}) / 2 ))
    printf "%*s" $padding ""
    print_color "$color" "$text"
}

# 绘制分隔线
draw_line() {
    local char="${1:-═}"
    local color="${2:-$CYAN}"
    printf "${color}"
    for ((i=1; i<=TERM_COLS; i++)); do
        printf "$char"
    done
    printf "${NC}\n"
}

# 绘制边框
draw_border() {
    local title="$1"
    draw_line "═" "$CYAN"
    echo ""
    center_text "$title" "$WHITE"
    echo ""
    draw_line "═" "$CYAN"
}

# 全屏标题
print_title() {
    clear_screen
    get_terminal_size
    
    echo ""
    draw_border "MySQL 备份恢复管理工具 v1.0"
    echo ""
    
    # 显示系统信息
    center_text "🖥️  系统: $(uname -s) $(uname -r)" "$CYAN"
    center_text "📅 时间: $(date '+%Y-%m-%d %H:%M:%S')" "$CYAN"
    center_text "👤 用户: $(whoami)@$(hostname)" "$CYAN"
    echo ""
    draw_line "─" "$BLUE"
}

# 高级进度条动画
show_progress() {
    local message=$1
    local process_pid=$2
    local spinner_chars="⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏"
    local delay=0.1
    local spin_i=0
    
    echo -n -e "${YELLOW}${message}${NC} "
    
    # 如果提供了进程PID，监控进程状态
    if [ -n "$process_pid" ]; then
        while kill -0 $process_pid 2>/dev/null; do
            printf "\b${CYAN}%s${NC}" "${spinner_chars:spin_i++%${#spinner_chars}:1}"
            sleep $delay
        done
    else
        # 简单的固定时间动画
        for i in {1..30}; do
            printf "\b${CYAN}%s${NC}" "${spinner_chars:spin_i++%${#spinner_chars}:1}"
            sleep $delay
        done
    fi
    
    echo -e "\b${GREEN}✓${NC}"
}

# 计时器函数
start_timer() {
    START_TIME=$(date +%s)
}

end_timer() {
    END_TIME=$(date +%s)
    DURATION=$((END_TIME - START_TIME))
    
    local hours=$((DURATION / 3600))
    local minutes=$(((DURATION % 3600) / 60))
    local seconds=$((DURATION % 60))
    
    if [ $hours -gt 0 ]; then
        echo "${hours}小时${minutes}分${seconds}秒"
    elif [ $minutes -gt 0 ]; then
        echo "${minutes}分${seconds}秒"
    else
        echo "${seconds}秒"
    fi
}

# 检查MySQL连接
check_mysql_connection() {
    print_color $BLUE "🔍 检查MySQL连接状态..."
    
    if mysql -h"$MYSQL_HOST" -P"$MYSQL_PORT" -u"$MYSQL_USER" -p"$MYSQL_PASS" -e "SELECT 1;" >/dev/null 2>&1; then
        print_color $GREEN "✅ MySQL连接成功"
        print_color $CYAN "   连接信息: ${MYSQL_USER}@${MYSQL_HOST}:${MYSQL_PORT}"
        return 0
    else
        print_color $RED "❌ MySQL连接失败，请检查连接配置"
        print_color $YELLOW "   主机: ${MYSQL_HOST}:${MYSQL_PORT}"
        print_color $YELLOW "   用户: ${MYSQL_USER}"
        exit 1
    fi
}

# 创建备份目录
create_backup_dir() {
    if [ ! -d "$BACKUP_DIR" ]; then
        print_color $YELLOW "📁 创建备份目录: $BACKUP_DIR"
        mkdir -p "$BACKUP_DIR"
    fi
}

# 清理过期备份
cleanup_old_backups() {
    print_color $BLUE "🧹 清理 ${RETENTION_DAYS} 天前的备份文件..."
    
    local deleted_count=0
    while IFS= read -r -d '' file; do
        rm -f "$file"
        deleted_count=$((deleted_count + 1))
        print_color $YELLOW "  删除: $(basename "$file")"
    done < <(find "$BACKUP_DIR" -name "*.sql" -type f -mtime +$RETENTION_DAYS -print0 2>/dev/null)
    
    # 清理过期的gz文件
    while IFS= read -r -d '' file; do
        rm -f "$file"
        deleted_count=$((deleted_count + 1))
        print_color $YELLOW "  删除: $(basename "$file")"
    done < <(find "$BACKUP_DIR" -name "*.gz" -type f -mtime +$RETENTION_DAYS -print0 2>/dev/null)
    
    if [ $deleted_count -eq 0 ]; then
        print_color $GREEN "✅ 没有需要清理的过期备份文件"
    else
        print_color $GREEN "✅ 已清理 ${deleted_count} 个过期备份文件"
    fi
}

# 压缩备份文件
compress_backup() {
    local sql_file=$1
    local gz_file="${sql_file}.gz"
    
    print_color $BLUE "📦 压缩备份文件..."
    
    if command -v gzip >/dev/null 2>&1; then
        if gzip "$sql_file"; then
            local size=$(du -h "$gz_file" | cut -f1)
            print_color $GREEN "✅ 压缩完成！"
            print_color $GREEN "   压缩文件: $(basename "$gz_file")"
            print_color $GREEN "   文件大小: ${size}"
            echo "$gz_file"
        else
            print_color $RED "❌ 压缩失败"
            return 1
        fi
    else
        print_color $YELLOW "⚠️  系统未安装gzip命令，跳过压缩"
        echo "$sql_file"
    fi
}

# 获取所有数据库列表（排除系统数据库）
get_all_databases() {
    mysql -h"$MYSQL_HOST" -P"$MYSQL_PORT" -u"$MYSQL_USER" -p"$MYSQL_PASS" -e "SHOW DATABASES;" 2>/dev/null | grep -Ev "^(Database|information_schema|performance_schema|mysql|sys)$"
}

# 全量备份
full_backup() {
    # 备份前先执行清理
    print_color $BLUE "🧹 备份前清理过期文件..."
    cleanup_old_backups
    
    local timestamp=$(date +"%Y%m%d_%H%M%S")
    local backup_file="${BACKUP_DIR}/full_backup_${timestamp}.sql"
    
    print_color $BLUE "🚀 开始全量备份..."
    print_color $CYAN "   备份文件: $(basename "$backup_file")"
    
    # 开始计时
    start_timer
    
    # 后台执行备份命令
    mysqldump -h"$MYSQL_HOST" -P"$MYSQL_PORT" -u"$MYSQL_USER" -p"$MYSQL_PASS" --all-databases $MYSQLDUMP_OPTIONS > "$backup_file" 2>/dev/null &
    local backup_pid=$!
    
    # 显示进度条
    show_progress "正在执行全量备份" $backup_pid
    
    # 等待备份完成并检查结果
    wait $backup_pid
    local backup_result=$?
    
    # 结束计时
    local elapsed_time=$(end_timer)
    
    if [ $backup_result -eq 0 ] && [ -s "$backup_file" ]; then
        print_color $GREEN "✅ 全量备份完成！耗时: ${elapsed_time}"
        
        # 压缩备份文件
        local final_file=$(compress_backup "$backup_file")
        if [ $? -eq 0 ]; then
            print_color $GREEN "   保存路径: ${final_file}"
        else
            print_color $GREEN "   保存路径: ${backup_file}"
        fi
    else
        print_color $RED "❌ 全量备份失败，耗时: ${elapsed_time}"
        rm -f "$backup_file"
        return 1
    fi
}

# 部分库备份（排除预设的数据库）
partial_backup() {
    # 检查是否配置了排除数据库
    if [ -z "$EXCLUDE_DATABASES" ]; then
        print_color $RED "❌ 未配置排除数据库列表"
        print_color $YELLOW "   请在脚本顶部的 EXCLUDE_DATABASES 变量中配置要排除的数据库"
        print_color $YELLOW "   示例: EXCLUDE_DATABASES=\"test_db,log_db,temp_db\""
        return 1
    fi
    
    print_color $CYAN "📋 配置的排除数据库: $EXCLUDE_DATABASES"
    
    # 将逗号分隔的字符串转换为数组
    IFS=',' read -ra exclude_array <<< "$EXCLUDE_DATABASES"
    
    # 获取所有数据库并排除指定的
    local all_dbs=$(get_all_databases)
    local backup_dbs=""
    
    if [ -z "$all_dbs" ]; then
        print_color $RED "❌ 未找到任何用户数据库"
        return 1
    fi
    
    print_color $BLUE "📊 分析数据库列表..."
    print_color $CYAN "   发现用户数据库: $(echo $all_dbs | tr '\n' ' ')"
    
    # 处理排除逻辑
    local excluded_dbs=""
    for db in $all_dbs; do
        local skip=false
        
        for exclude_db in "${exclude_array[@]}"; do
            # 去除可能的空格和特殊字符
            exclude_db=$(echo "$exclude_db" | xargs | tr -d '\r\n')
            
            if [ "$db" = "$exclude_db" ]; then
                skip=true
                excluded_dbs="$excluded_dbs $db"
                break
            fi
        done
        
        if [ "$skip" = false ]; then
            backup_dbs="$backup_dbs $db"
        fi
    done
    
    # 显示处理结果
    if [ -n "$excluded_dbs" ]; then
        print_color $YELLOW "   已排除数据库:$excluded_dbs"
    fi
    print_color $GREEN "   将备份数据库:$backup_dbs"
    
    if [ -z "$backup_dbs" ]; then
        print_color $RED "❌ 排除后没有需要备份的数据库"
        return 1
    fi
    
    echo ""
    echo -n -e "${YELLOW}确认执行备份？(y/N): ${NC}"
    read -r confirm
    
    if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
        print_color $YELLOW "⏹️  备份已取消"
        return 0
    fi
    
    # 备份前先执行清理
    print_color $BLUE "🧹 备份前清理过期文件..."
    cleanup_old_backups
    
    local timestamp=$(date +"%Y%m%d_%H%M%S")
    local backup_file="${BACKUP_DIR}/partial_backup_${timestamp}.sql"
    
    print_color $BLUE "🚀 开始部分库备份..."
    print_color $CYAN "   备份文件: $(basename "$backup_file")"
    
    # 开始计时
    start_timer
    
    # 后台执行备份命令
    mysqldump -h"$MYSQL_HOST" -P"$MYSQL_PORT" -u"$MYSQL_USER" -p"$MYSQL_PASS" --databases $backup_dbs $MYSQLDUMP_OPTIONS > "$backup_file" 2>/dev/null &
    local backup_pid=$!
    
    # 显示进度条
    show_progress "正在执行部分库备份" $backup_pid
    
    # 等待备份完成并检查结果
    wait $backup_pid
    local backup_result=$?
    
    # 结束计时
    local elapsed_time=$(end_timer)
    
    if [ $backup_result -eq 0 ] && [ -s "$backup_file" ]; then
        print_color $GREEN "✅ 部分库备份完成！耗时: ${elapsed_time}"
        
        # 压缩备份文件
        local final_file=$(compress_backup "$backup_file")
        if [ $? -eq 0 ]; then
            print_color $GREEN "   保存路径: ${final_file}"
        else
            print_color $GREEN "   保存路径: ${backup_file}"
        fi
    else
        print_color $RED "❌ 部分库备份失败，耗时: ${elapsed_time}"
        rm -f "$backup_file"
        return 1
    fi
}

# 列出备份文件
list_backups() {
    print_color $BLUE "📋 可用的备份文件："
    echo ""
    
    local backup_files=($(find "$BACKUP_DIR" \( -name "*.sql" -o -name "*.gz" \) -type f -printf "%T@ %p\n" 2>/dev/null | sort -rn | cut -d' ' -f2-))
    
    if [ ${#backup_files[@]} -eq 0 ]; then
        print_color $YELLOW "⚠️  没有找到备份文件"
        return 1
    fi
    
    local index=1
    for file in "${backup_files[@]}"; do
        local filename=$(basename "$file")
        local size=$(du -h "$file" 2>/dev/null | cut -f1)
        local date=$(date -r "$file" "+%Y-%m-%d %H:%M:%S" 2>/dev/null)
        printf "${CYAN}%2d.${NC} %-40s ${GREEN}%8s${NC} ${YELLOW}%s${NC}\n" "$index" "$filename" "$size" "$date"
        index=$((index + 1))
    done
    
    return 0
}

# 恢复备份
restore_backup() {
    if ! list_backups; then
        return 1
    fi
    
    echo ""
    echo -n -e "${YELLOW}请选择要恢复的备份文件编号: ${NC}"
    read -r selection
    
    if ! [[ "$selection" =~ ^[0-9]+$ ]]; then
        print_color $RED "❌ 请输入有效的数字"
        return 1
    fi
    
    local backup_files=($(find "$BACKUP_DIR" \( -name "*.sql" -o -name "*.gz" \) -type f -printf "%T@ %p\n" 2>/dev/null | sort -rn | cut -d' ' -f2-))
    local selected_index=$((selection - 1))
    
    if [ $selected_index -lt 0 ] || [ $selected_index -ge ${#backup_files[@]} ]; then
        print_color $RED "❌ 选择的编号超出范围"
        return 1
    fi
    
    local backup_file="${backup_files[$selected_index]}"
    local filename=$(basename "$backup_file")
    
    print_color $YELLOW "⚠️  警告：恢复操作将覆盖现有数据库！"
    print_color $CYAN "选择的备份文件: $filename"
    echo -n -e "${RED}确认执行恢复操作？(y/N): ${NC}"
    read -r confirm
    
    if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
        print_color $YELLOW "⏹️  恢复已取消"
        return 0
    fi
    
    print_color $BLUE "🔄 开始恢复数据库..."
    print_color $CYAN "   恢复文件: $filename"
    
    show_progress 5 "正在执行数据库恢复"
    
    # 如果是gz文件，先解压
    local actual_file="$backup_file"
    if [[ "$backup_file" == *.gz ]]; then
        print_color $BLUE "📦 解压备份文件..."
        local temp_sql="${backup_file%.*}"
        if gunzip -c "$backup_file" > "$temp_sql"; then
            actual_file="$temp_sql"
        else
            print_color $RED "❌ 解压失败"
            return 1
        fi
    fi
    
    if mysql -h"$MYSQL_HOST" -P"$MYSQL_PORT" -u"$MYSQL_USER" -p"$MYSQL_PASS" < "$actual_file" 2>/dev/null; then
        print_color $GREEN "✅ 数据库恢复完成！"
        # 如果是临时解压的文件，删除它
        if [[ "$backup_file" == *.gz ]] && [ "$actual_file" != "$backup_file" ]; then
            rm -f "$actual_file"
        fi
    else
        print_color $RED "❌ 数据库恢复失败"
        # 如果是临时解压的文件，删除它
        if [[ "$backup_file" == *.gz ]] && [ "$actual_file" != "$backup_file" ]; then
            rm -f "$actual_file"
        fi
        return 1
    fi
}

# 显示帮助信息
show_help() {
    print_color $CYAN "用法："
    print_color $WHITE "  $0                    # 交互式模式"
    print_color $WHITE "  $0 [选项]             # 命令行模式"
    echo ""
    print_color $CYAN "选项："
    print_color $WHITE "  1                     # 全量备份"
    print_color $WHITE "  2                     # 部分库备份（排除指定数据库）"
    print_color $WHITE "  3                     # 恢复备份"
    print_color $WHITE "  4                     # 查看备份文件"
    print_color $WHITE "  5                     # 退出"
    print_color $WHITE "  -h, --help           # 显示此帮助信息"
    echo ""
    print_color $CYAN "示例："
    print_color $WHITE "  $0 1                 # 直接执行全量备份"
    print_color $WHITE "  $0 2                 # 直接执行部分库备份"
    print_color $WHITE "  $0 4                 # 查看备份文件列表"
    echo ""
}

# 显示状态栏
show_status_bar() {
    echo ""
    draw_line "─" "$BLUE"
    printf "${CYAN}状态: ${GREEN}✅ 已连接${NC}"
    printf "${CYAN} | 备份目录: ${YELLOW}${BACKUP_DIR}${NC}"
    printf "${CYAN} | 保留天数: ${YELLOW}${RETENTION_DAYS}天${NC}\n"
    draw_line "─" "$BLUE"
}

# 显示菜单选项
show_menu_item() {
    local num=$1
    local icon=$2
    local text=$3
    local desc=$4
    
    # 计算总宽度为50个字符，确保在边框内对齐
    printf "  ${WHITE}[${CYAN}%s${WHITE}]${NC} %s ${WHITE}%-16s${NC} ${YELLOW}%-20s${NC}" "$num" "$icon" "$text" "$desc"
}

# 全屏显示菜单
show_menu() {
    echo ""
    echo ""
    center_text "📋 主菜单 - 请选择操作" "$BLUE"
    echo ""
    echo ""
    
    # 创建菜单框 - 使用固定宽度来确保对齐
    local menu_width=56
    local menu_start=$(( (TERM_COLS - menu_width) / 2 ))
    
    # 顶部边框
    printf "%*s${CYAN}┌" $menu_start ""
    for ((i=1; i<=menu_width-2; i++)); do printf "─"; done
    printf "┐${NC}\n"
    
    # 空行
    printf "%*s${CYAN}│" $menu_start ""
    printf "%*s${CYAN}│${NC}\n" $((menu_width-1)) ""
    
    # 菜单项
    printf "%*s${CYAN}│${NC}" $menu_start ""
    show_menu_item "1" "🗃️ " "全量备份" "备份所有数据库"
    printf "${CYAN}│${NC}\n"
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    printf "%*s${CYAN}│${NC}\n" $((menu_width-1)) ""
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    show_menu_item "2" "📦" "部分库备份" "排除指定数据库后备份"
    printf "${CYAN}│${NC}\n"
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    printf "%*s${CYAN}│${NC}\n" $((menu_width-1)) ""
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    show_menu_item "3" "🔄" "恢复备份" "从备份文件恢复数据库"
    printf "${CYAN}│${NC}\n"
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    printf "%*s${CYAN}│${NC}\n" $((menu_width-1)) ""
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    show_menu_item "4" "📋" "查看备份" "列出所有备份文件"
    printf "${CYAN}│${NC}\n"
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    printf "%*s${CYAN}│${NC}\n" $((menu_width-1)) ""
    
    printf "%*s${CYAN}│${NC}" $menu_start ""
    show_menu_item "5" "🚪" "退出程序" "安全退出备份工具"
    printf "${CYAN}│${NC}\n"
    
    # 空行
    printf "%*s${CYAN}│" $menu_start ""
    printf "%*s${CYAN}│${NC}\n" $((menu_width-1)) ""
    
    # 底部边框
    printf "%*s${CYAN}└" $menu_start ""
    for ((i=1; i<=menu_width-2; i++)); do printf "─"; done
    printf "┘${NC}\n"
    
    echo ""
    show_status_bar
    echo ""
}

# 执行指定的操作
execute_operation() {
    local choice=$1
    
    case $choice in
        1)
            print_color $BLUE "🚀 执行全量备份..."
            full_backup
            ;;
        2)
            print_color $BLUE "📦 执行部分库备份..."
            partial_backup
            ;;
        3)
            print_color $BLUE "🔄 执行备份恢复..."
            restore_backup
            ;;
        4)
            print_color $BLUE "📋 查看备份文件..."
            list_backups
            ;;
        5)
            print_color $GREEN "👋 感谢使用MySQL备份恢复工具！"
            exit 0
            ;;
        *)
            print_color $RED "❌ 无效选择: $choice"
            print_color $YELLOW "请使用 1-5 之间的数字，或运行 $0 --help 查看帮助"
            exit 1
            ;;
    esac
}

# 显示输入提示
show_input_prompt() {
    echo ""
    center_text "请输入您的选择 [1-5]" "$YELLOW"
    echo ""
    printf "%*s${CYAN}➤ ${NC}" $(( (TERM_COLS - 10) / 2 )) ""
}

# 显示操作结果页面
show_result_page() {
    local title="$1"
    local status="$2"
    
    clear_screen
    get_terminal_size
    
    echo ""
    draw_border "$title"
    echo ""
    
    if [ "$status" = "success" ]; then
        center_text "✅ 操作完成" "$GREEN"
    else
        center_text "❌ 操作失败" "$RED"
    fi
    
    echo ""
    echo ""
    center_text "按任意键返回主菜单..." "$CYAN"
}

# 交互式模式
interactive_mode() {
    while true; do
        clear_screen
        print_title
        show_menu
        show_input_prompt
        
        read -r choice
        
        case "$choice" in
            1|2|3|4|5)
                clear_screen
                print_title
                execute_operation "$choice"
                
                if [ "$choice" != "5" ]; then
                    if [ "$choice" != "4" ]; then
                        echo ""
                        echo ""
                        center_text "操作完成，按任意键返回主菜单..." "$CYAN"
                        read -r
                    else
                        echo ""
                        echo ""
                        center_text "按任意键返回主菜单..." "$CYAN"
                        read -r
                    fi
                fi
                ;;
            *)
                clear_screen
                print_title
                echo ""
                center_text "❌ 无效选择，请输入 1-5 之间的数字" "$RED"
                echo ""
                center_text "按任意键返回主菜单..." "$CYAN"
                read -r
                ;;
        esac
    done
}

# 主函数
main() {
    # 处理命令行参数
    if [ $# -gt 0 ]; then
        case "$1" in
            -h|--help)
                print_title
                show_help
                exit 0
                ;;
            1|2|3|4|5)
                # 命令行模式 - 直接执行指定操作
                print_title
                
                # 初始化检查
                check_mysql_connection
                create_backup_dir
                
                # 执行指定操作
                execute_operation "$1"
                exit 0
                ;;
            *)
                print_color $RED "❌ 无效参数: $1"
                echo ""
                show_help
                exit 1
                ;;
        esac
    fi
    
    # 交互式模式
    # 检查是否为root用户或有sudo权限
    if [ "$EUID" -ne 0 ] && ! sudo -n true 2>/dev/null; then
        print_color $YELLOW "⚠️  建议使用root权限运行此脚本"
    fi
    
    print_title
    
    # 初始化检查
    check_mysql_connection
    create_backup_dir
    
    # 进入交互式模式
    interactive_mode
}

# 信号处理
trap 'echo -e "\n${YELLOW}👋 程序已中断退出${NC}"; exit 1' INT TERM

# 运行主程序
main "$@"