623 lines
18 KiB
Bash
623 lines
18 KiB
Bash
#!/bin/bash
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# 优化版实时命令监控脚本 - 带完整IP地理位置和智能日志管理
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# 版本: 3.0
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set -e
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### 配置区域 ###
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LOG_DIR="/root/command_monitor_logs"
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MAX_LOG_SIZE="1M" # 单个日志文件最大大小
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MAX_LOG_FILES=20 # 最大日志文件数量
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LOG_ROTATE_INTERVAL=1800 # 日志轮转间隔(秒) - 30分钟
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MEMORY_LIMIT="512M"
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CPU_LIMIT=90
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CHECK_INTERVAL=300
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BACKUP_DAYS=7
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CLEANUP_INTERVAL=3600
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### IP地理位置配置 ###
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CACHE_IP_INFO=true
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IP_CACHE_FILE="/tmp/ip_geo_cache.txt"
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CACHE_EXPIRE=86400 # 缓存过期时间(秒) - 24小时
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### 颜色定义 ###
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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PURPLE='\033[0;35m'
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CYAN='\033[0;36m'
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NC='\033[0m'
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### 全局变量 ###
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SCRIPT_PID=$$
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MONITOR_PID=""
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LAST_CLEANUP=0
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LAST_ROTATION=0
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CURRENT_LOG=""
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DAEMON_MODE=false
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# 获取时间戳
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timestamp() {
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date '+%Y-%m-%d %H:%M:%S'
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}
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# 日志函数
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log_message() {
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local level="$1"
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local message="$2"
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local color="$GREEN"
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case "$level" in
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"ERROR") color="$RED" ;;
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"WARN") color="$YELLOW" ;;
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"INFO") color="$BLUE" ;;
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"SUCCESS") color="$GREEN" ;;
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"COMMAND") color="$CYAN" ;;
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esac
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if [ "$DAEMON_MODE" = true ]; then
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echo -e "${color}[$(timestamp)] [$level] $message${NC}" >> "$CURRENT_LOG"
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else
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echo -e "${color}[$(timestamp)] [$level] $message${NC}" | tee -a "$CURRENT_LOG"
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fi
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}
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# 增强版IP地理位置查询
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get_ip_location() {
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local ip="$1"
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# 检查缓存
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if [ "$CACHE_IP_INFO" = true ] && [ -f "$IP_CACHE_FILE" ]; then
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local cached_info=$(grep "^$ip|" "$IP_CACHE_FILE" | head -1)
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if [ -n "$cached_info" ]; then
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local cache_time=$(echo "$cached_info" | cut -d'|' -f2)
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local current_time=$(date +%s)
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if [ $((current_time - cache_time)) -lt $CACHE_EXPIRE ]; then
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echo "$cached_info" | cut -d'|' -f3-
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return 0
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fi
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fi
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fi
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local location_info=""
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# 方法1: 使用ip-api.com (免费，无需API key)
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location_info=$(curl -s -m 5 "http://ip-api.com/json/$ip?fields=status,message,country,regionName,city,isp,query" 2>/dev/null)
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if echo "$location_info" | grep -q '"status":"success"'; then
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local country=$(echo "$location_info" | grep -o '"country":"[^"]*"' | cut -d'"' -f4)
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local region=$(echo "$location_info" | grep -o '"regionName":"[^"]*"' | cut -d'"' -f4)
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local city=$(echo "$location_info" | grep -o '"city":"[^"]*"' | cut -d'"' -f4)
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local isp=$(echo "$location_info" | grep -o '"isp":"[^"]*"' | cut -d'"' -f4)
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if [ -n "$country" ]; then
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location_info="$country"
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[ -n "$region" ] && location_info="$location_info-$region"
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[ -n "$city" ] && location_info="$location_info-$city"
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[ -n "$isp" ] && location_info="$location_info($isp)"
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else
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location_info="未知位置"
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fi
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else
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location_info="未知位置"
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fi
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# 缓存结果
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if [ "$CACHE_IP_INFO" = true ]; then
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echo "$ip|$(date +%s)|$location_info" >> "$IP_CACHE_FILE"
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fi
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echo "$location_info"
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}
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# 获取城市名称（用于日志文件名）
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get_city_name() {
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local ip="$1"
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local location=$(get_ip_location "$ip")
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# 从位置信息中提取城市名
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if [[ "$location" == *"-"* ]]; then
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# 格式: 中国-江西-南昌(中国电信)
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local city=$(echo "$location" | awk -F'-' '{print $3}' | sed 's/(.*//')
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if [ -n "$city" ] && [ "$city" != "未知位置" ]; then
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echo "$city" | sed 's/[^a-zA-Z0-9\u4e00-\u9fff]/_/g'
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else
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echo "unknown"
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fi
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else
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echo "unknown"
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fi
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}
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# 获取客户端IP
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get_client_ip() {
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local ip="unknown"
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if [ -n "$SSH_CLIENT" ]; then
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ip=$(echo "$SSH_CLIENT" | awk '{print $1}')
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elif [ -n "$SSH_CONNECTION" ]; then
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ip=$(echo "$SSH_CONNECTION" | awk '{print $1}')
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else
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ip=$(who -m 2>/dev/null | awk '{print $5}' | sed 's/[()]//g' | head -1)
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if [[ "$ip" == ":0" ]] || [[ "$ip" == ":1" ]] || [[ -z "$ip" ]]; then
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ip="localhost"
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fi
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fi
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echo "$ip"
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}
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# 智能日志轮转检查
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check_log_rotation() {
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local current_time=$(date +%s)
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# 检查时间间隔
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if [ $((current_time - LAST_ROTATION)) -ge $LOG_ROTATE_INTERVAL ]; then
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log_rotation "time"
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return 0
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fi
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# 检查文件大小
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if [ -f "$CURRENT_LOG" ]; then
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local log_size=$(stat -c%s "$CURRENT_LOG" 2>/dev/null || echo 0)
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local max_bytes=$(echo "$MAX_LOG_SIZE" | sed 's/M/*1024*1024/;s/K/*1024/' | bc 2>/dev/null || echo 1048576)
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if [ "$log_size" -gt "$max_bytes" ]; then
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log_rotation "size"
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return 0
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fi
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fi
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return 1
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}
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# 初始化日志系统
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init_log_system() {
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mkdir -p "$LOG_DIR"
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local client_ip=$(get_client_ip)
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local city_name=$(get_city_name "$client_ip")
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local log_date=$(date '+%Y%m%d_%H%M%S')
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# 构建日志文件名：IP_城市_时间.log
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if [ "$city_name" != "unknown" ]; then
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CURRENT_LOG="$LOG_DIR/monitor_${client_ip//./_}_${city_name}_${log_date}.log"
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else
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CURRENT_LOG="$LOG_DIR/monitor_${client_ip//./_}_${log_date}.log"
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fi
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LATEST_LOG="$LOG_DIR/latest.log"
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ln -sf "$CURRENT_LOG" "$LATEST_LOG"
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LAST_ROTATION=$(date +%s)
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log_message "INFO" "监控脚本启动 - PID: $$"
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log_message "INFO" "客户端IP: $client_ip"
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local location_info=$(get_ip_location "$client_ip")
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log_message "INFO" "地理位置: $location_info"
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log_message "INFO" "日志文件: $CURRENT_LOG"
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log_message "INFO" "日志轮转: ${LOG_ROTATE_INTERVAL}秒或${MAX_LOG_SIZE}"
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}
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# 日志轮转
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log_rotation() {
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local reason="$1"
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log_message "INFO" "执行日志轮转 - 原因: $reason"
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# 保存当前日志的最终信息
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if [ -f "$CURRENT_LOG" ]; then
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local log_size=$(du -h "$CURRENT_LOG" | cut -f1)
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log_message "INFO" "原日志文件大小: $log_size"
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fi
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# 重新初始化日志系统
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init_log_system
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log_message "INFO" "新日志文件已创建"
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}
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# 资源监控函数
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monitor_resources() {
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local check_count=0
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while true; do
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sleep 60
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# 检查日志轮转条件
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check_log_rotation
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# 检查内存使用
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local mem_usage=$(free 2>/dev/null | awk 'NR==2{printf "%.2f", $3*100/$2}' || echo "0")
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if (( $(echo "$mem_usage > $CPU_LIMIT" | bc -l 2>/dev/null) )); then
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log_message "WARN" "内存使用率过高: ${mem_usage}%"
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fi
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# 检查CPU使用率
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local cpu_usage=$(top -bn1 2>/dev/null | grep "Cpu(s)" | awk '{print $2}' | cut -d'%' -f1 || echo "0")
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if (( $(echo "$cpu_usage > $CPU_LIMIT" | bc -l 2>/dev/null) )); then
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log_message "WARN" "CPU使用率过高: ${cpu_usage}%"
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fi
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# 定期系统检查
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((check_count++))
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if [ $((check_count * 60)) -ge $CHECK_INTERVAL ]; then
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perform_system_check
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check_count=0
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fi
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# 定期清理旧日志
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local current_time=$(date +%s)
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if [ $((current_time - LAST_CLEANUP)) -ge $CLEANUP_INTERVAL ]; then
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cleanup_old_logs
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LAST_CLEANUP=$current_time
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fi
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done
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}
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# 系统健康检查
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perform_system_check() {
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log_message "INFO" "=== 系统健康检查 ==="
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# 内存信息
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local mem_info=$(free -h 2>/dev/null || echo "无法获取内存信息")
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log_message "INFO" "内存使用: $mem_info"
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# 磁盘信息
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local disk_info=$(df -h "$LOG_DIR" 2>/dev/null | tail -1 || echo "无法获取磁盘信息")
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log_message "INFO" "磁盘使用: $disk_info"
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# 日志文件信息
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local log_count=$(find "$LOG_DIR" -name "monitor_*.log" 2>/dev/null | wc -l)
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local total_log_size=$(du -sh "$LOG_DIR" 2>/dev/null | cut -f1 || echo "0")
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log_message "INFO" "日志文件数: $log_count, 总大小: $total_log_size"
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log_message "INFO" "=== 检查完成 ==="
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}
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# 清理旧日志
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cleanup_old_logs() {
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log_message "INFO" "开始清理旧日志..."
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# 按时间清理
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local deleted_count=$(find "$LOG_DIR" -name "monitor_*.log" -mtime "+$BACKUP_DAYS" -delete -print | wc -l)
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if [ "$deleted_count" -gt 0 ]; then
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log_message "INFO" "已删除 $deleted_count 个过期日志文件"
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fi
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# 按数量清理
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local log_count=$(find "$LOG_DIR" -name "monitor_*.log" 2>/dev/null | wc -l)
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if [ "$log_count" -gt "$MAX_LOG_FILES" ]; then
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local files_to_delete=$((log_count - MAX_LOG_FILES))
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find "$LOG_DIR" -name "monitor_*.log" -type f -printf '%T@ %p\n' 2>/dev/null | \
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sort -n 2>/dev/null | head -n "$files_to_delete" | cut -d' ' -f2- | while read file; do
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rm -f "$file" 2>/dev/null && log_message "INFO" "删除旧日志: $(basename "$file")"
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done
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fi
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log_message "SUCCESS" "日志清理完成"
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}
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# 信号处理函数
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setup_signal_handlers() {
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trap 'cleanup_on_exit' SIGINT SIGTERM
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trap 'log_message "WARN" "收到挂起信号"; cleanup_on_exit' SIGHUP
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trap 'log_rotation "manual"' SIGUSR1
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}
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# 退出清理
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cleanup_on_exit() {
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log_message "INFO" "正在停止监控服务..."
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if [ -n "$MONITOR_PID" ]; then
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kill "$MONITOR_PID" 2>/dev/null || true
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fi
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pkill -f "monitor_resources" 2>/dev/null || true
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log_message "SUCCESS" "监控服务已停止"
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exit 0
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}
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# 配置实时history
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configure_realtime_history() {
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log_message "INFO" "配置实时命令记录..."
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for user_dir in /home/* /root; do
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if [ -d "$user_dir" ]; then
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local user=$(basename "$user_dir")
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local bashrc="$user_dir/.bashrc"
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if [ -f "$bashrc" ]; then
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if ! grep -q "REAL_TIME_HISTORY" "$bashrc"; then
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cat >> "$bashrc" << 'EOF'
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# REAL_TIME_HISTORY - 实时命令记录配置
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export PROMPT_COMMAND='history -a; history -c; history -r'
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export HISTTIMEFORMAT='%F %T '
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export HISTSIZE=10000
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export HISTFILESIZE=20000
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shopt -s histappend
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export HISTCONTROL=ignoredups:erasedups
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EOF
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log_message "SUCCESS" "已为用户 $user 配置实时命令记录"
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else
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log_message "INFO" "用户 $user 已配置实时记录"
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fi
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fi
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fi
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done
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}
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# 过滤无用命令
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should_ignore_command() {
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local command="$1"
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# 忽略空命令和很短的无意义命令
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if [ -z "$command" ] || [ "${#command}" -lt 2 ]; then
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return 0
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fi
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# 忽略history时间戳行
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if [[ "$command" =~ ^#[0-9]+$ ]]; then
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return 0
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fi
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# 忽略常见简单命令
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local ignore_patterns=(
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"ls" "cd" "pwd" "ll" "la" "history" "exit" "clear"
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"echo" "date" "whoami" "id" "uname" "uptime"
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)
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for pattern in "${ignore_patterns[@]}"; do
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if [ "$command" = "$pattern" ]; then
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return 0
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fi
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done
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return 1
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}
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# 主监控函数
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start_main_monitor() {
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log_message "INFO" "启动主监控进程..."
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declare -A file_sizes
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declare -A last_commands
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# 初始化文件大小
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for user_dir in /home/* /root; do
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if [ -d "$user_dir" ]; then
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local user=$(basename "$user_dir")
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local history_file="$user_dir/.bash_history"
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if [ -f "$history_file" ]; then
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file_sizes["$user"]=$(stat -c%s "$history_file" 2>/dev/null || echo 0)
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last_commands["$user"]=""
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else
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file_sizes["$user"]=0
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last_commands["$user"]=""
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fi
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fi
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done
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# 主监控循环
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while true; do
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for user_dir in /home/* /root; do
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if [ -d "$user_dir" ]; then
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local user=$(basename "$user_dir")
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local history_file="$user_dir/.bash_history"
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if [ -f "$history_file" ]; then
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local current_size=$(stat -c%s "$history_file" 2>/dev/null || echo 0)
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local last_size=${file_sizes["$user"]}
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if [ "$current_size" -gt "$last_size" ]; then
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local new_content=$(tail -c +$((last_size + 1)) "$history_file" 2>/dev/null | tr -d '\0')
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if [ -n "$new_content" ]; then
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while IFS= read -r line; do
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line=$(echo "$line" | sed 's/^[ \t]*//;s/[ \t]*$//')
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if ! should_ignore_command "$line" && [ "$line" != "${last_commands["$user"]}" ]; then
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local client_ip=$(get_client_ip)
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local location_info=$(get_ip_location "$client_ip")
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log_message "COMMAND" "用户: $user | 命令: $line | 来源: $client_ip [$location_info]"
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last_commands["$user"]="$line"
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fi
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done <<< "$new_content"
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fi
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file_sizes["$user"]=$current_size
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fi
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fi
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fi
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done
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sleep 1
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done
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}
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|
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# 后台运行监控
|
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start_background_monitor() {
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log_message "INFO" "启动后台监控服务..."
|
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|
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# 切换到后台运行
|
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(
|
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# 重新初始化日志系统（在子进程中）
|
||
init_log_system
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log_message "INFO" "后台监控进程启动 - PID: $$"
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|
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# 启动资源监控
|
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monitor_resources &
|
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local resource_pid=$!
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|
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# 启动主监控
|
||
start_main_monitor &
|
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MONITOR_PID=$!
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|
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log_message "SUCCESS" "后台监控服务已启动"
|
||
log_message "INFO" "主监控PID: $MONITOR_PID"
|
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log_message "INFO" "资源监控PID: $resource_pid"
|
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log_message "INFO" "查看实时日志: tail -f $LATEST_LOG"
|
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log_message "INFO" "停止监控: kill $MONITOR_PID"
|
||
|
||
# 等待子进程
|
||
wait $MONITOR_PID
|
||
) &
|
||
|
||
local main_pid=$!
|
||
echo -e "${GREEN}后台监控已启动!${NC}"
|
||
echo -e "主进程PID: $main_pid"
|
||
echo -e "日志文件: $LATEST_LOG"
|
||
echo -e "查看日志: ${GREEN}tail -f $LATEST_LOG${NC}"
|
||
echo -e "停止监控: ${RED}kill $main_pid${NC}"
|
||
|
||
# 保存PID到文件以便管理
|
||
echo "$main_pid" > "/tmp/command_monitor.pid"
|
||
}
|
||
|
||
# 显示使用说明
|
||
show_usage() {
|
||
echo -e "${GREEN}实时命令监控系统 v3.0${NC}"
|
||
echo "用法: $0 [选项]"
|
||
echo
|
||
echo "选项:"
|
||
echo " -d, --daemon 后台运行模式"
|
||
echo " -c, --config 只配置不运行"
|
||
echo " -s, --status 查看监控状态"
|
||
echo " -k, --kill 停止监控进程"
|
||
echo " -r, --rotate 轮转日志文件"
|
||
echo " -h, --help 显示此帮助信息"
|
||
echo
|
||
echo "日志管理:"
|
||
echo " - 每30分钟自动轮转"
|
||
echo " - 文件超过1M自动轮转"
|
||
echo " - 日志按IP+城市+时间命名"
|
||
echo
|
||
echo "示例:"
|
||
echo " $0 -d # 后台运行监控"
|
||
echo " $0 --status # 查看监控状态"
|
||
echo " $0 --kill # 停止监控"
|
||
}
|
||
|
||
# 查看监控状态
|
||
check_monitor_status() {
|
||
local pid_file="/tmp/command_monitor.pid"
|
||
local main_pid=""
|
||
|
||
if [ -f "$pid_file" ]; then
|
||
main_pid=$(cat "$pid_file" 2>/dev/null)
|
||
fi
|
||
|
||
if [ -z "$main_pid" ] || ! ps -p "$main_pid" >/dev/null 2>&1; then
|
||
echo -e "${RED}监控服务未运行${NC}"
|
||
|
||
# 检查是否有残留进程
|
||
local residual_pids=$(pgrep -f "command_monitor" 2>/dev/null || true)
|
||
if [ -n "$residual_pids" ]; then
|
||
echo -e "${YELLOW}发现残留进程，建议清理: kill $residual_pids${NC}"
|
||
fi
|
||
return 1
|
||
fi
|
||
|
||
echo -e "${GREEN}监控服务运行中${NC}"
|
||
echo "主进程PID: $main_pid"
|
||
echo "日志目录: $LOG_DIR"
|
||
echo "最新日志: $LATEST_LOG"
|
||
|
||
if [ -f "$LATEST_LOG" ]; then
|
||
local log_size=$(du -h "$LATEST_LOG" 2>/dev/null | cut -f1 || echo "未知")
|
||
local log_count=$(find "$LOG_DIR" -name "monitor_*.log" 2>/dev/null | wc -l)
|
||
|
||
echo "当前日志大小: $log_size"
|
||
echo "总日志文件数: $log_count"
|
||
echo
|
||
echo -e "${YELLOW}最近5条记录:${NC}"
|
||
tail -5 "$LATEST_LOG" 2>/dev/null | while read line; do
|
||
echo " $line"
|
||
done
|
||
fi
|
||
}
|
||
|
||
# 停止监控进程
|
||
stop_monitor() {
|
||
local pid_file="/tmp/command_monitor.pid"
|
||
local main_pid=""
|
||
|
||
if [ -f "$pid_file" ]; then
|
||
main_pid=$(cat "$pid_file")
|
||
rm -f "$pid_file"
|
||
fi
|
||
|
||
if [ -z "$main_pid" ]; then
|
||
# 如果没有PID文件，尝试查找进程
|
||
main_pid=$(pgrep -f "command_monitor" | head -1)
|
||
fi
|
||
|
||
if [ -z "$main_pid" ]; then
|
||
echo -e "${YELLOW}没有找到运行的监控进程${NC}"
|
||
return 0
|
||
fi
|
||
|
||
echo -e "${YELLOW}正在停止监控进程 (PID: $main_pid)...${NC}"
|
||
|
||
# 优雅停止
|
||
kill "$main_pid" 2>/dev/null || true
|
||
sleep 3
|
||
|
||
# 检查是否停止成功
|
||
if ps -p "$main_pid" >/dev/null 2>&1; then
|
||
echo -e "${RED}强制停止监控进程...${NC}"
|
||
kill -9 "$main_pid" 2>/dev/null || true
|
||
sleep 1
|
||
fi
|
||
|
||
# 清理所有相关进程
|
||
pkill -f "monitor_resources" 2>/dev/null || true
|
||
|
||
# 清理PID文件
|
||
rm -f "$pid_file" 2>/dev/null
|
||
|
||
echo -e "${GREEN}监控进程已停止${NC}"
|
||
}
|
||
|
||
### 主程序 ###
|
||
main() {
|
||
case "${1:-}" in
|
||
-d|--daemon)
|
||
DAEMON_MODE=true
|
||
init_log_system
|
||
setup_signal_handlers
|
||
configure_realtime_history
|
||
start_background_monitor
|
||
;;
|
||
-c|--config)
|
||
init_log_system
|
||
configure_realtime_history
|
||
;;
|
||
-s|--status)
|
||
check_monitor_status
|
||
;;
|
||
-k|--kill)
|
||
stop_monitor
|
||
;;
|
||
-r|--rotate)
|
||
init_log_system
|
||
log_rotation "manual"
|
||
;;
|
||
-h|--help)
|
||
show_usage
|
||
;;
|
||
*)
|
||
echo -e "${YELLOW}前台运行模式 (Ctrl+C 停止)${NC}"
|
||
init_log_system
|
||
setup_signal_handlers
|
||
configure_realtime_history
|
||
start_main_monitor
|
||
;;
|
||
esac
|
||
}
|
||
|
||
# 运行主程序
|
||
main "$@"
|