问题描述

今天修改了一个 php-fpm.conf 的配置：daemonize = yes。

然后使用 kill -USR2 'cat /usr/local/var/run/php-fpm.pid' 重启 php-fpm.

执行 ps -ef | grep php-fpm 的结果如下图：

501 25131 1 0 9:31下午 ?? 0:00.37 /usr/local/opt/php/sbin/php-fpm --nodaemonize

501 25136 25131 0 9:31下午 ?? 0:00.00 /usr/local/opt/php/sbin/php-fpm --nodaemonize

501 25137 25131 0 9:31下午 ?? 0:00.00 /usr/local/opt/php/sbin/php-fpm --nodaemonize

然后通过 kill -9 25131，这个 pid 的进程停止了又会自动启动一个新的 fpm 进程。

我的问题是，为什么 fpm 会自动重启，还有 --nodaemonize 是什么，我的进程里没有发现 master process .

下面是我关闭进程后的日志：

[27-Sep-2018 09:44:17] NOTICE: Finishing ...

[27-Sep-2018 09:44:17] NOTICE: exiting, bye-bye!

[27-Sep-2018 09:44:17] NOTICE: [pool www] 'user' directive is ignored when FPM is not running as root

[27-Sep-2018 09:44:17] NOTICE: [pool www] 'user' directive is ignored when FPM is not running as root

[27-Sep-2018 09:44:17] NOTICE: [pool www] 'group' directive is ignored when FPM is not running as root

[27-Sep-2018 09:44:17] NOTICE: [pool www] 'group' directive is ignored when FPM is not running as root

[27-Sep-2018 09:44:17] NOTICE: fpm is running, pid 941

[27-Sep-2018 09:44:17] NOTICE: ready to handle connections