请问一下，我的VPS最近怎么总是会在下午的一个时间段内出现502？

hncstql

最近基本上每天都是只有下午差不多1~5点出现502，然后就恢复正常？

hncstql

Centos 7系统，试用systemctl php-fpm status会显示Unknown operation 'php-fpm'.然后刚刚试了下重新安装lnmp1.3会恢复正常，但是在完成安装后会数据库PHPAdminMySQL无法登录！！！

hncstql

还有就是访问主机IP正常，虚拟主机的貌似就不行了？？？

licess

状态管理：https://lnmp.org/faq/lnmp-status-manager.html

建议按置顶帖 502 排查方法开慢日志看看502发生时段的日志

hncstql

1. Stoping LNMP...
   
2. Stoping nginx... nginx: [error] open() "/usr/local/nginx/logs/nginx.pid" failed (2: No such file or directory)
   
3. failed. Use force-quit
   
4. Gracefully shutting down php-fpm . done
   
5. Shutting down MySQL. SUCCESS!
   
6. Starting LNMP...
   
7. Starting nginx... nginx (pid 6507 6506 6505) already running.
   
8. Starting php-fpm Zend Guard Loader requires Zend Engine API version 220090626.
   
9. The Zend Engine API version 220131226 which is installed, is newer.
   
10. Contact Zend Technologies at http://www.zend.com/ for a later version of Zend Guard Loader.
    
11. 
    
12. [24-Aug-2016 16:05:29] ALERT: [pool www] pm.min_spare_servers(12) and pm.max_spare_servers(25) cannot be greater than pm.max_children(20)
    
13. [24-Aug-2016 16:05:29] ERROR: failed to post process the configuration
    
14. [24-Aug-2016 16:05:29] ERROR: FPM initialization failed
    
15. failed
    
16. Starting MySQL.. SUCCESS!

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军哥！！！我发现Ngnix总是会停止运行？

hncstql

军哥！！！我发现Ngnix总是会停止运行？

licess

要是nginx挂了就不会显示502，你就只能看到浏览器的提示信息

只按你上面restart的信息，你php是5.3，而你安装的确是php 5.6的zend guard loader

同时你调整php-fpm中的参数有问题，上面也有提示pm.min_spare_servers和pm.max_spare_servers的值不能大于pm.max_children