1. 利用Shell脚本实现

#!/bin/bash

PORT=0

while [ true ];do

read -p "please enter the port that you want to minitor:" port

if [ $port -gt 65536 ] || [ $port -lt 1 ];then

echo "the port you enter is not correctly"

else

PORT=$port

break

fi

done

while [ true ]; do

if [ `netstat -anp 2> /dev/null | grep ${PORT} | wc -l` -gt 0 ] ;then

echo "service is online"

else

echo "service is offline"

cd /home/eko/share/live_admin/script

php ./ws.php &

fi

sleep 3

done

2. 利用Swoole定时器实现

class Server {

const PORT = 8811;

public function port() {

$shell = "netstat -anp 2>/dev/null | grep ". self::PORT . " | grep LISTEN | wc -l";

$result = shell_exec($shell);

if($result != 1) {

// 发送报警服务 邮件 短信

/// todo

echo date("Ymd H:i:s")."error".PHP_EOL;

} else {

echo date("Ymd H:i:s")."succss".PHP_EOL;

}

}

}

// nohup

swoole_timer_tick(2000, function($timer_id) {

(new Server())->port();

echo "time-start".PHP_EOL;

});