How to close PHP fpm

How to shut down PHP fpm: first check the master process number of php-fpm; then shut down through the command "kill -INT 'cat /usr/local/php/var/run/php-fpm.pid'" php-fpm will do.

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php-fpm start, restart, terminate operation

Recently, I installed the mysqli extension. After restarting nginx, phpinfo() did not display mysqli. Later, I could not figure out the reason and directly used pdo to connect to the database. Until today after installing redis, phpinfo() did not display redis. The ten thousand galloping grass and mud horses in my heart finally broke out. I was frantically looking for a way to find out that php-fpm had not restarted. I tinkered with the methods on the Internet. It was completely like a Baidu article. No One point comes to the point, and finally it was tinkered with. Let’s talk about how to start, restart and terminate php-fpm.

Start php-fpm:

/usr/local/php/sbin/php-fpm

php 5.3.3 and later php-fpm no longer supports the /usr that php-fpm had before /local/php/sbin/php-fpm (start|stop|reload) and other commands, so don’t look at this old-fashioned command anymore. You need to use signal control:

The master process can understand the following signals

INT, TERM Terminate immediately

QUIT Terminate gracefully

USR1 Reopen the log file

USR2 Gracefully reload all worker processes and reload configuration and binary modules

A simple and direct restart method:

Check the master process number of php-fpm first

# ps aux|grep php-fpm
root     21891  0.0  0.0 112660   960 pts/3    R+   16:18   0:00 grep --color=auto php-fpm
root     42891  0.0  0.1 182796  1220 ?        Ss   4月18   0:19 php-fpm: master process (/usr/local/php/etc/php-fpm.conf)
nobody   42892  0.0  0.6 183000  6516 ?        S    4月18   0:07 php-fpm: pool www
nobody   42893  0.0  0.6 183000  6508 ?        S    4月18   0:17 php-fpm: pool www

Restart php-fpm:

kill -USR2 42891

OK.

The above scheme is generally used when the php-fpm.pid file is not generated. If you want to generate php-fpm.pid, use the following scheme:

Master above The process can be seen that matster uses the configuration file /usr/local/php/etc/php-fpm.conf. Cat /usr/local/php/etc/php-fpm.conf found:

[global]
; Pid file
; Note: the default prefix is /usr/local/php/var
; Default Value: none
;pid = run/php-fpm.pid

The pid file path should be located at /usr/local/php/var/run/php-fpm.pid. Since it was commented out, it was not generated. We remove the comment and then kill -USR2 42891 to restart php- fpm, the pid file will be generated. Next time, you can use the following command to restart and close php-fpm:

php-fpm Close:

kill -INT 'cat /usr/local/php/var/run/php-fpm.pid'

php-fpm Restart:

kill -USR2 'cat /usr/local/php/var/run/php-fpm.pid'

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