Linux under PHP-FPM start setting as root

For security php-fpm, the default is initiated by the Apache user

[Root@chaoge ~]# Ps-aux | grep php-fpm
Warning:bad syntax, perhaps a bogus '-'? See/usr/share/doc/procps-3.2.8/faq
Root 4539 0.0 0.0 205552 3716? Ss 10:22 0:00 php-fpm:master process (/etc/php-fpm.conf)
Apache 4540 0.0 0.0 205552 3332? S 10:22 0:00 Php-fpm:pool www
Apache 4541 0.0 0.0 205552 3332? S 10:22 0:00 Php-fpm:pool www
Apache 4542 0.0 0.0 205552 3332? S 10:22 0:00 Php-fpm:pool www
Apache 4543 0.0 0.0 205552 3332? S 10:22 0:00 Php-fpm:pool www
Apache 4544 0.0 0.0 205552 3332? S 10:22 0:00 Php-fpm:pool www
Root 4556 0.0 0.0 103248 888 pts/1 s+ 10:22 0:00 grep php-fpm

A bunch of articles on the web say that starting with root requires setting up a bunch of very complex programs, and some people say they can't start as root. Since it is the PHP-FPM program, so you should find the configuration file, so open the default configuration file, you need to see your default profile path where

/etc/php-fpm.d/www.conf

This is on my machine.

Found it

; Rpm:apache choosed to is able to access some dir as httpd
user = Apache
Change into
; Rpm:apache choosed to is able to access some dir as httpd
user = root

Reboot PHP-FPM

[Root@chaoge ~]# Ps-le | grep php-fpm
1 S 0 4974 1 0 0-51388 Ep_pol? 00:00:00 PHP-FPM
5 S 4975 4974 0 0-51388 inet_c? 00:00:00 PHP-FPM
5 S 4976 4974 0 0-51388 inet_c? 00:00:00 PHP-FPM
5 S 4977 4974 0 0-51388 inet_c? 00:00:00 PHP-FPM
5 S 4978 4974 0 0-51388 inet_c? 00:00:00 PHP-FPM
5 S 5035 4974 0 0-51388 inet_c? 00:00:00 PHP-FPM
[Root@chaoge ~]# Kill-quit 5035
[Root@chaoge ~]# PHP-FPM
[17-apr-2015 10:33:38] ERROR: [Pool www] Please specify the user and group other than root
[17-apr-2015 10:33:38] ERROR:FPM initialization failed
[Root@chaoge ~]#

Error, prompted to run PHP-FPM run users and groups can only select other than root, so view the PHP-FPM document, you will find one of the options:-R

[Root@chaoge ~]# php-fpm--help
usage:php [-n] [E] [-h] [-i] [-m] [-v] [-t] [-P <prefix>] [G-<pid>] [-C <file>] [-D Foo[=bar]] [-y &L T;file>] [d] [-f]
-C <path>|<file> Look for php.ini file in this directory
-N No php.ini file would be used
-D Foo[=bar] Define INI entry foo with value ' Bar '
-e Generate extended information for Debugger/profiler
-H This Help
-I PHP information
-m show compiled in modules
-V Version number
-P,--prefix <dir>
Specify alternative prefix path to FastCGI process Manager (default:/usr).
-G,--pid <file>
Specify the PID file location.
-Y,--fpm-config <file>
Specify alternative path to FastCGI Process Manager config file.
-T,--test Test FPM configuration and exit
-D,--daemonize force to run in background, and ignore daemonize option from config file
-F,--nodaemonize
Force to stay in foreground, and ignore daemonize option from config file
-R,--allow-to-run-as-root
Allow pool to run as root (disabled by default)
So we try to start with this parameter and try it on.

[Root@chaoge ~]# Php-fpm-r
[Root@chaoge ~]# Ps-aux | grep php-fpm
Warning:bad syntax, perhaps a bogus '-'? See/usr/share/doc/procps-3.2.8/faq
Root 5497 0.0 0.0 205552 3712? Ss 10:36 0:00 php-fpm:master process (/etc/php-fpm.conf)
Root 5498 0.0 0.0 205552 3196? S 10:36 0:00 Php-fpm:pool www
Root 5499 0.0 0.0 205552 3196? S 10:36 0:00 Php-fpm:pool www
Root 5500 0.0 0.0 205552 3196? S 10:36 0:00 Php-fpm:pool www
Root 5501 0.0 0.0 205552 3200? S 10:36 0:00 Php-fpm:pool www
Root 5502 0.0 0.0 205552 3200? S 10:36 0:00 Php-fpm:pool www
Root 5524 0.0 0.0 103252 888 pts/1 s+ 10:36 0:00 grep php-fpm

Successfully started, test, the root user wrote a shell script saved in the root host directory, the PHP exec written script works correctly.