Nginx encountered 502 Bad Gateway automatic restart script code _nginx

The principle is to use Curl to obtain HTTP headers, found 502 status code to perform the restart PHP-FPM command.

Copy Code code as follows:

#!/usr/bin/php
<!--$url = ' http://www.jb51.net ';
$cmd = '/usr/local/php/sbin/php-fpm restart ';

for ($i = 0; $i < 5; $i + +) {$exec = "curl connect-timeout 3-i $url 2>/dev/null";
$res = Shell_exec ($exec);

if (Stripos ($res, ' 502 Bad Gateway ')!== false) {
Shell_exec ($cmd);
Exit ();
}
}
-->

As for crontab, please google search or refer to the following article
Http://www.jb51.net/LINUXjishu/19905.html
Http://www.jb51.net/LINUXjishu/17374.html