PHP脚本监控Nginx 502错误并自动重启php-fpm_php技巧
最近服务器时不时出现Nginx 502 Bad Gateway,如果在电脑旁边还好,要是半夜或者出去了,怎么办?
没关系,写个脚本检测服务状态,发现异常,自动重启。
自动重启脚本:
$url = 'http://blog.rebill.info';
$cmd = '/usr/local/php/sbin/php-fpm restart';
for($i = 0; $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();
}
}
原理就是用curl获取HTTP头,发现502状态码就执行重启php-fpm的命令。
url和cmd根据实际情况改成自己的。然后放到crontab里一分钟执行一次。
*/1 * * * * /usr/bin/php /root/crontab/nginx502.php
大功告成!

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