What should I do if php fpm stops and restarts?

Solution to the problem that php fpm has stopped: First check the master process number of "php-fpm"; then use the command "ill -USR2 42891" to restart "php-fpm".

php-fpm start, restart, terminate operation

Start php-fpm:

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

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

The master process can understand the following signals

INT, TERM Terminate immediately

QUIT Smooth termination

USR1 Reopen log file

USR2 Smooth reload of all worker processes and reload configuration and binaries Module

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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