PHP＋Swoole+Linux实现进程监控

class Server{    const PORT = 8888;    public function port()    {        //netstat -anp 2>/dev/null| grep 8888 |grep LISTEN |wc -l        $shellCommand = 'netstat -anp 2>/dev/null| grep ' . self::PORT . "| grep LISTEN | wc -l";        $result = shell_exec($shellCommand);        if ($result != 1) {            //进程不存在，发送警报信息            echo 'At '.date('Y-m-d H:i:s') . ' service process is exit' . PHP_EOL;        } else {            echo 'At '.date('Y-m-d H:i:s') . ' service process is ok' . PHP_EOL;        }    }}Swoole\Timer::tick(1000, function (int $timer_id) {    (new Server)->port();});

nohup /usr/bin/php ./Server.php > ~/test.log &

更加精确的写法
netstat -anp 2>/dev/null| grep 127.0.0.1:8866 | grep LISTEN | wc -l