网络连通性批量检测脚本

#!/bin/bash # ========================================== # 网络连通性批量检测脚本 # 用途：批量检测多个IP/域名的连通性和端口状态 # 使用方法： # 1. 修改 HOSTS 配置 # 2. bash network_check.sh # ========================================== # ========== 配置 ========== # 检测列表：名称|主机|端口(可选，留空只ping) HOSTS=( "网关|192.168.1.1|" "DNS服务器|8.8.8.8|" "百度|www.baidu.com|443" "阿里云|223.5.5.5|" # "数据库|192.168.1.100|3306" # "Redis|192.168.1.101|6379" ) PING_COUNT=3 # ping次数 PING_TIMEOUT=2 # ping超时(秒) PORT_TIMEOUT=3 # 端口检测超时(秒) LOG_FILE="/var/log/network_check.log" ALERT_EMAIL="" WECOM_WEBHOOK="" # ========================== mkdir -p "$(dirname "$LOG_FILE")" log_msg() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE" } send_alert() { local title="$1" local content="$2" log_msg "【告警】$title: $content" if [ -n "$ALERT_EMAIL" ]; then echo -e "$content" | mail -s "【网络告警】$title" "$ALERT_EMAIL" 2>/dev/null fi if [ -n "$WECOM_WEBHOOK" ]; then curl -s "$WECOM_WEBHOOK" -H "Content-Type: application/json" -d "{ "msgtype": "text", "text": {"content": "【网络告警】$title\n$content"} }" >/dev/null 2>&1 fi } check_ping() { local host="$1" local result=$(ping -c "$PING_COUNT" -W "$PING_TIMEOUT" "$host" 2>&1) if echo "$result" | grep -q "100% packet loss\|100% 丢包\|Destination Host Unreachable"; then echo "FAIL|丢包率100%|0ms" return 1 fi local loss=$(echo "$result" | grep -oP "\d+% packet loss|\d+% 丢包" | head -1 | grep -oP "\d+") local avg_time=$(echo "$result" | grep -oP "avg/[^/]+/\K[0-9.]+" | head -1) [ -z "$avg_time" ] && avg_time=$(echo "$result" | grep -oP "time=\K[0-9.]+" | tail -1) [ -z "$avg_time" ] && avg_time="N/A" if [ "${loss:-0}" -gt 0 ]; then echo "WARN|丢包率${loss}%|${avg_time}ms" return 2 fi echo "OK|丢包率0%|${avg_time}ms" return 0 } check_port() { local host="$1" local port="$2" if command -v nc >/dev/null 2>&1; then if nc -z -w "$PORT_TIMEOUT" "$host" "$port" 2>/dev/null; then echo "OPEN" return 0 else echo "CLOSED" return 1 fi elif command -v telnet >/dev/null 2>&1; then timeout "$PORT_TIMEOUT" bash -c "echo > /dev/tcp/$host/$port" 2>/dev/null && echo "OPEN" || echo "CLOSED" return $? else echo "UNCHECK(无nc/telnet)" return 3 fi } log_msg "==========================================" log_msg " 网络连通性批量检测报告" log_msg " 检测时间: $(date '+%Y-%m-%d %H:%M:%S')" log_msg "==========================================" PASS_COUNT=0 FAIL_COUNT=0 WARN_COUNT=0 for item in "${HOSTS[@]}"; do name=$(echo "$item" | cut -d'|' -f1) host=$(echo "$item" | cut -d'|' -f2) port=$(echo "$item" | cut -d'|' -f3) log_msg "" log_msg "【$name】$host" # Ping检测 ping_result=$(check_ping "$host") ping_status=$(echo "$ping_result" | cut -d'|' -f1) ping_detail=$(echo "$ping_result" | cut -d'|' -f2) ping_time=$(echo "$ping_result" | cut -d'|' -f3) case "$ping_status" in OK) log_msg " 🟢 Ping: $ping_detail 延迟$ping_time" PASS_COUNT=$((PASS_COUNT + 1)) ;; WARN) log_msg " 🟡 Ping: $ping_detail 延迟$ping_time" WARN_COUNT=$((WARN_COUNT + 1)) send_alert "$name 网络丢包" "$host ping丢包: $ping_detail，延迟$ping_time" ;; FAIL) log_msg " 🔴 Ping: $ping_detail" FAIL_COUNT=$((FAIL_COUNT + 1)) send_alert "$name 网络不通" "$host ping失败: $ping_detail" ;; esac # 端口检测 if [ -n "$port" ]; then port_status=$(check_port "$host" "$port") if [ "$port_status" = "OPEN" ]; then log_msg " 🟢 端口$port: $port_status" else log_msg " 🔴 端口$port: $port_status" FAIL_COUNT=$((FAIL_COUNT + 1)) send_alert "$name 端口异常" "$host:$port 状态: $port_status" fi fi done log_msg "" log_msg "==========================================" log_msg " 检测总结: 正常$PASS_COUNT 警告$WARN_COUNT 失败$FAIL_COUNT" log_msg "=========================================="

[{"name": "HOSTS", "label": "\u68c0\u6d4b\u5217\u8868(\u6bcf\u884c\u4e00\u4e2a\uff0c\u683c\u5f0f\uff1a\u540d\u79f0|\u4e3b\u673a|\u7aef\u53e3)", "type": "textarea", "default": "\u7f51\u5173|192.168.1.1|\n\u767e\u5ea6|www.baidu.com|443"}, {"name": "PING_COUNT", "label": "Ping\u6b21\u6570", "default": "3"}, {"name": "ALERT_EMAIL", "label": "\u544a\u8b66\u90ae\u7bb1(\u53ef\u9009)", "default": ""}]