FastCGI 进程管理器 (FPM)

FPM (FastCGI 进程管理器) 用于替换PHP FastCGI的大部分附加功能，对于高负载网站是非常有用的。

它的功能包括：

支持平滑停止/启动的高级进程管理功能；
可以工作于不同的uid/gid/chroot环境下，并监听不同的端口和使用不同的php.ini配置文件（可取代safe_mode的设置）；
stdout 和 stderr 日志记录;
在发生意外情况的时候能够重新启动并缓存被破坏的opcode;
文件上传优化支持;
"慢日志" - 记录脚本 (不仅记录文件名，还记录PHP backtrace信息，可以使用ptrace或者类似工具读取和分析远程进程的运行数据) 运行所导致的异常缓慢;
fastcgi_finish_request() - 特殊功能：用于在请求完成和刷新数据后，继续在后台执行耗时的工作 (录入视频转换、统计处理等)；
动态/静态子进程产生;
基本SAPI运行状态信息 (类似Apache的 mod_status);
基于php.ini的配置文件.

add a note User Contributed Notes FastCGI 进程管理器 (FPM)

joel k 30-Jun-2011 12:56


the fpm process supports the USER2 signal, which is used to reload the config file.



kill -USR2 [pid]



should do the trick.

robin at robinwinslow dot co dot uk 12-Dec-2010 10:05


Init script setup

===



You will probably want to create an init script for your new php-fpm. Fortunately, PHP 5.3.3 provides one for you, which you should copy to your init directory and change permissions:



$ cp <php-5.3.3-source-dir>/sapi/fpm/init.d.php-fpm.in /etc/init.d/php-fpm

$ chmod 755 /etc/init.d/php-fpm



It requires a certain amount of setup. First of all, make sure your php-fpm.conf file is set up to  create a PID file when php-fpm starts. E.g.:

----

pid = /var/run/php-fpm.pid

----

(also make sure your php-fpm user has permission to create this file).



Now open up your new init script (/etc/init.d/php-fpm) and set the variables at the top to their relevant values. E.g.:

---

prefix=

exec_prefix=

php_fpm_BIN=/sbin/php-fpm

php_fpm_CONF=/etc/php-fpm.conf

php_fpm_PID=/var/run/php-fpm.pid

---



Your init script is now ready. You should now be able to start, stop and reload php-fpm:



$ /etc/init.d/php-fpm start

$ /etc/init.d/php-fpm stop

$ /etc/init.d/php-fpm reload



The one remaining thing you may wish to do is to add your new php-fpm init script to system start-up. E.g. in CentOS:



$ /sbin/chkconfig php-fpm on



===========



Disclaimer: Although I did just do this on my own server about 20 mins ago, everything I've written here is off the top of my head, so it may not be 100% correct. Also, allow for differences in system setup. Some understanding of what you are doing is assumed.

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FastCGI 进程管理器 (FPM)

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