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1楼   2009-01-31

[文章作者:张宴 本文版本:v4.12 最后修改:2009.01.17 转载请注明原文链接:http://blog.s135.com/post/366.htm]

  前言:本文是我撰写的关于搭建“Nginx + PHP(FastCGI)”Web服务器的第4篇文章。本系列文章作为国内最早详细介绍 Nginx + PHP 安装、配置、使用的资料之一,为推动 Nginx 在国内的发展产生了积极的作用。这是一篇关于Nginx 0.7.x系列版本的文章,安装、配置方式与第3篇文章相差不大,但配置参数有不同。Nginx 0.7.x系列版本虽然为开发版,但在很多大型网站的生产环境中已经使用。

  链接:《2007年9月的第1版》、《2007年12月的第2版》、《2008年6月的第3版

  点击在新窗口中浏览此图片

  Nginx ("engine x") 是一个高性能的 HTTP 和反向代理服务器,也是一个 IMAP/POP3/SMTP 代理服务器。 Nginx 是由 Igor Sysoev 为俄罗斯访问量第二的 Rambler.ru 站点开发的,它已经在该站点运行超过两年半了。Igor 将源代码以类BSD许可证的形式发布。

  Nginx 超越 Apache 的高性能和稳定性,使得国内使用 Nginx 作为 Web 服务器的网站也越来越多,其中包括新浪博客新浪播客网易新闻等门户网站频道,六间房56.com等视频分享网站,Discuz!官方论坛水木社区等知名论坛,豆瓣YUPOO相册海内SNS迅雷在线等新兴Web 2.0网站。



  Nginx 的官方中文维基:http://wiki.codemongers.com/NginxChs



  在高并发连接的情况下,Nginx是Apache服务器不错的替代品。Nginx同时也可以作为7层负载均衡服务器来使用。根据我的测试结果,Nginx 0.7.30 + PHP 5.2.8 (FastCGI) 可以承受3万以上的并发连接数,相当于同等环境下Apache的10倍

  根据我的经验,4GB内存的服务器+Apache(prefork模式)一般只能处理3000个并发连接,因为它们将占用3GB以上的内存,还得为系统预留1GB的内存。我曾经就有两台Apache服务器,因为在配置文件中设置的MaxClients为4000,当Apache并发连接数达到3800时,导致服务器内存和Swap空间用满而崩溃。

  而这台 Nginx 0.7.30 + PHP 5.2.8 (FastCGI) 服务器在3万并发连接下,开启的10个Nginx进程消耗150M内存(15M*10=150M),开启的64个php-cgi进程消耗1280M内存(20M*64=1280M),加上系统自身消耗的内存,总共消耗不到2GB内存。如果服务器内存较小,完全可以只开启25个php-cgi进程,这样php-cgi消耗的总内存数才500M。

  在3万并发连接下,访问Nginx 0.7.30 + PHP 5.2.8 (FastCGI) 服务器的PHP程序,仍然速度飞快。下图为Nginx的状态监控页面,显示的活动连接数为28457(关于Nginx的监控页配置,会在本文接下来所给出的Nginx配置文件中写明):

  点击在新窗口中浏览此图片

  我生产环境下的两台Nginx + PHP5(FastCGI)服务器,跑多个一般复杂的纯PHP动态程序,单台Nginx + PHP5(FastCGI)服务器跑PHP动态程序的处理能力已经超过“700次请求/秒”,相当于每天可以承受6000万(700*60*60*24=60480000)的访问量(更多信息见此),而服务器的系统负载也不高:

  点击在新窗口中浏览此图片



  安装步骤:
  (系统要求:Linux 2.6+ 内核,本文中的Linux操作系统为CentOS 5.1,另在RedHat AS4上也安装成功)

  一、获取相关开源程序:
  1、【适用CentOS操作系统】利用CentOS Linux系统自带的yum命令安装、升级所需的程序库(RedHat等其他Linux发行版可从安装光盘中找到这些程序库的RPM包,进行安装):

sudo -s
LANG=C
yum -y install gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-devel e2fsprogs e2fsprogs-devel krb5 krb5-devel libidn libidn-devel openssl openssl-devel



  2、【适用RedHat操作系统】RedHat等其他Linux发行版可从安装光盘中找到这些程序库的RPM包(事先可通过类似“rpm -qa | grep libjpeg”的命令查看所需的RPM包是否存在,通常是“xxx-devel”不存在,需要安装)。RedHat可以直接利用CentOS的RPM包安装,以下是RPM包下载网址:
  ①、RedHat AS4 & CentOS 4
  http://mirror.be10.com/centos/4/os/i386/CentOS/RPMS/
  http://mirror.be10.com/centos/4/os/x86_64/CentOS/RPMS/

  ②、RedHat AS5 & CentOS 5
  http://mirror.be10.com/centos/5/os/i386/CentOS/
  http://mirror.be10.com/centos/5/os/x86_64/CentOS/

  ③、RPM包搜索网站
  http://rpm.pbone.net/
  http://www.rpmfind.net/

  ④、RedHat AS4 系统环境,通常情况下缺少的支持包安装:
  Ⅰ、i386 系统


  Ⅱ、x86_64 系统



  3、【适用CentOS、RedHat及其它Linux操作系统】下载程序源码包:
  本文中提到的所有开源软件为截止到2009年1月15日的最新稳定版。
  ①、从软件的官方网站下载:

mkdir -p /data0/software
cd /data0/software
wget http://sysoev.ru/nginx/nginx-0.7.30.tar.gz
wget http://www.php.net/get/php-5.2.8.tar.gz/from/this/mirror
wget http://php-fpm.anight.org/downloads/head/php-5.2.8-fpm-0.5.10.diff.gz
wget http://dev.mysql.com/get/Downloads/MySQL-5.1/mysql-5.1.30.tar.gz/from/http://mirrors.24-7-solutions.net/pub/mysql/
wget http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.12.tar.gz
wget "http://downloads.sourceforge.net/mcrypt/libmcrypt-2.5.8.tar.gz?modtime=1171868460&big_mirror=0"
wget "http://downloads.sourceforge.net/mcrypt/mcrypt-2.6.7.tar.gz?modtime=1194463373&big_mirror=0"
wget http://pecl.php.net/get/memcache-2.2.4.tgz
wget "http://downloads.sourceforge.net/mhash/mhash-0.9.9.tar.gz?modtime=1175740843&big_mirror=0"
wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-7.8.tar.gz
wget http://bart.eaccelerator.net/source/0.9.5.3/eaccelerator-0.9.5.3.tar.bz2
wget http://pecl.php.net/get/PDO_MYSQL-1.0.2.tgz


  ②、从blog.s135.com下载(比较稳定,只允许在本站,或者在Linux/Unix下通过Wget、Curl等命令下载以下软件):

mkdir -p /data0/software
cd /data0/software
wget http://blog.s135.com/soft/linux/nginx_php/nginx/nginx-0.7.30.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/php/php-5.2.8.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/phpfpm/php-5.2.8-fpm-0.5.10.diff.gz
wget http://blog.s135.com/soft/linux/nginx_php/mysql/mysql-5.1.30.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/libiconv/libiconv-1.12.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/mcrypt/libmcrypt-2.5.8.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/mcrypt/mcrypt-2.6.7.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/memcache/memcache-2.2.4.tgz
wget http://blog.s135.com/soft/linux/nginx_php/mhash/mhash-0.9.9.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/pcre/pcre-7.8.tar.gz
wget http://blog.s135.com/soft/linux/nginx_php/eaccelerator/eaccelerator-0.9.5.3.tar.bz2
wget http://blog.s135.com/soft/linux/nginx_php/pdo/PDO_MYSQL-1.0.2.tgz




  二、安装PHP 5.2.8(FastCGI模式)
  1、编译安装PHP 5.2.8所需的支持库:

tar zxvf libiconv-1.12.tar.gz
cd libiconv-1.12/
./configure --prefix=/usr/local
make
make install
cd ../

tar zxvf libmcrypt-2.5.8.tar.gz
cd libmcrypt-2.5.8/
./configure
make
make install
/sbin/ldconfig
cd libltdl/
./configure --enable-ltdl-install
make
make install
cd ../../

tar zxvf mhash-0.9.9.tar.gz
cd mhash-0.9.9/
./configure
make
make install
cd ../

ln -s /usr/local/lib/libmcrypt.la /usr/lib/libmcrypt.la
ln -s /usr/local/lib/libmcrypt.so /usr/lib/libmcrypt.so
ln -s /usr/local/lib/libmcrypt.so.4 /usr/lib/libmcrypt.so.4
ln -s /usr/local/lib/libmcrypt.so.4.4.8 /usr/lib/libmcrypt.so.4.4.8
ln -s /usr/local/lib/libmhash.a /usr/lib/libmhash.a
ln -s /usr/local/lib/libmhash.la /usr/lib/libmhash.la
ln -s /usr/local/lib/libmhash.so /usr/lib/libmhash.so
ln -s /usr/local/lib/libmhash.so.2 /usr/lib/libmhash.so.2
ln -s /usr/local/lib/libmhash.so.2.0.1 /usr/lib/libmhash.so.2.0.1

tar zxvf mcrypt-2.6.7.tar.gz
cd mcrypt-2.6.7/
/sbin/ldconfig
./configure
make
make install
cd ../

?



  2、编译安装MySQL 5.1.30

/usr/sbin/groupadd mysql
/usr/sbin/useradd -g mysql mysql
tar zxvf mysql-5.1.30.tar.gz
cd mysql-5.1.30/
./configure --prefix=/usr/local/webserver/mysql/ --enable-assembler --with-extra-charsets=complex --enable-thread-safe-client --with-big-tables --with-readline --with-ssl --with-embedded-server --enable-local-infile --with-innodb
make && make install
chmod +w /usr/local/webserver/mysql
chown -R mysql:mysql /usr/local/webserver/mysql
cp support-files/my-medium.cnf /usr/local/webserver/mysql/my.cnf
cd ../

?



  附:以下为附加步骤,如果你想在这台服务器上运行MySQL数据库,则执行以下两步。如果你只是希望让PHP支持MySQL扩展库,能够连接其他服务器上的MySQL数据库,那么,以下两步无需执行。
  ①、以mysql用户帐号的身份建立数据表:

/usr/local/webserver/mysql/bin/mysql_install_db --basedir=/usr/local/webserver/mysql --datadir=/usr/local/webserver/mysql/data --user=mysql



  ②、启动MySQL(最后的&表示在后台运行)

/bin/sh /usr/local/webserver/mysql/bin/mysqld_safe --defaults-file=/usr/local/webserver/mysql/my.cnf &

?



  3、编译安装PHP(FastCGI模式)

tar zxvf php-5.2.8.tar.gz
gzip -cd php-5.2.8-fpm-0.5.10.diff.gz | patch -d php-5.2.8 -p1
cd php-5.2.8/
./configure --prefix=/usr/local/webserver/php --with-config-file-path=/usr/local/webserver/php/etc --with-mysql=/usr/local/webserver/mysql --with-mysqli=/usr/local/webserver/mysql/bin/mysql_config --with-iconv-dir=/usr/local --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-discard-path --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-fastcgi --enable-fpm --enable-force-cgi-redirect --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets
make ZEND_EXTRA_LIBS='-liconv'
make install
cp php.ini-dist /usr/local/webserver/php/etc/php.ini
cd ../

?



  4、编译安装PHP5扩展模块

tar zxvf memcache-2.2.4.tgz
cd memcache-2.2.4/
/usr/local/webserver/php/bin/phpize
./configure --with-php-config=/usr/local/webserver/php/bin/php-config
make
make install
cd ../

tar jxvf eaccelerator-0.9.5.3.tar.bz2
cd eaccelerator-0.9.5.3/
/usr/local/webserver/php/bin/phpize
./configure --enable-eaccelerator=shared --with-php-config=/usr/local/webserver/php/bin/php-config
make
make install
cd ../

tar zxvf PDO_MYSQL-1.0.2.tgz
cd PDO_MYSQL-1.0.2/
/usr/local/webserver/php/bin/phpize
./configure --with-php-config=/usr/local/webserver/php/bin/php-config --with-pdo-mysql=/usr/local/webserver/mysql
make
make install
cd ../



  5、修改php.ini文件
  手工修改:查找/usr/local/webserver/php/etc/php.ini中的extension_dir = "./"
  修改为extension_dir = "/usr/local/webserver/php/lib/php/extensions/no-debug-non-zts-20060613/"
  并在此行后增加以下几行,然后保存:
  extension = "memcache.so"
  extension = "pdo_mysql.so"

  再查找output_buffering = Off
  修改为output_buffering = On

  自动修改:若嫌手工修改麻烦,可执行以下shell命令,自动完成对php.ini文件的修改:

sed -i 's#extension_dir = "./"#extension_dir = "/usr/local/webserver/php/lib/php/extensions/no-debug-non-zts-20060613/"\nextension = "memcache.so"\nextension = "pdo_mysql.so"\n#' /usr/local/webserver/php/etc/php.ini
sed -i 's#output_buffering = Off#output_buffering = On#' /usr/local/webserver/php/etc/php.ini



  6、配置eAccelerator加速PHP:

mkdir -p /usr/local/webserver/eaccelerator_cache
vi /usr/local/webserver/php/etc/php.ini


  按shift+g键跳到配置文件的最末尾,加上以下配置信息:

引用
[eaccelerator]
zend_extension="/usr/local/webserver/php/lib/php/extensions/no-debug-non-zts-20060613/eaccelerator.so"
eaccelerator.shm_size="128"
eaccelerator.cache_dir="/usr/local/webserver/eaccelerator_cache"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="300"
eaccelerator.shm_prune_period="120"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"



  修改配置文件:

vi /etc/sysctl.conf


  输入以下内容:

引用
kernel.shmmax = 134217728


  然后执行以下命令使配置生效:

/sbin/sysctl -p

?



  7、创建www用户和组,以及供blog.s135.com和www.s135.com两个虚拟主机使用的目录:

/usr/sbin/groupadd www
/usr/sbin/useradd -g www www
mkdir -p /data0/htdocs/blog
chmod +w /data0/htdocs/blog
chown -R www:www /data0/htdocs/blog
mkdir -p /data0/htdocs/www
chmod +w /data0/htdocs/www
chown -R www:www /data0/htdocs/www



  8、创建php-fpm配置文件(php-fpm是为PHP打的一个FastCGI管理补丁,可以平滑变更php.ini配置而无需重启php-cgi):
  在/usr/local/webserver/php/etc/目录中创建php-fpm.conf文件:

rm -f /usr/local/webserver/php/etc/php-fpm.conf
vi /usr/local/webserver/php/etc/php-fpm.conf


  输入以下内容(如果您安装 Nginx + PHP 用于程序调试,请将以下的<value name="display_errors">0</value>改为<value name="display_errors">1</value>,以便显示PHP错误信息,否则,Nginx 会报状态为500的空白错误页):

  1. <?xml?version="1.0"??>??
  2. <configuration>??
  3. ??
  4. ??All?relative?paths?in?this?config?are?relative?to?php's?install?prefix ??
  5. ??
  6. ??<section?name="global_options">??
  7. ??
  8. ????Pid?file ??
  9. ????<value?name="pid_file">/usr/local/webserver/php/logs/php-fpm.pid</value>??
  10. ??
  11. ????Error?log?file ??
  12. ????<value?name="error_log">/usr/local/webserver/php/logs/php-fpm.log</value>??
  13. ??
  14. ????Log?level ??
  15. ????<value?name="log_level">notice</value>??
  16. ??
  17. ????When?this?amount?of?php?processes?exited?with?SIGSEGV?or?SIGBUS?... ??
  18. ????<value?name="emergency_restart_threshold">10</value>??
  19. ??
  20. ????...?in?a?less?than?this?interval?of?time,?a?graceful?restart?will?be?initiated. ??
  21. ????Useful?to?work?around?accidental?curruptions?in?accelerator's?shared?memory. ??
  22. ????<value?name="emergency_restart_interval">1m</value>??
  23. ??
  24. ????Time?limit?on?waiting?child's?reaction?on?signals?from?master ??
  25. ????<value?name="process_control_timeout">5s</value>??
  26. ??
  27. ????Set?to?'no'?to?debug?fpm ??
  28. ????<value?name="daemonize">yes</value>??
  29. ??
  30. ??</section>??
  31. ??
  32. ??<workers>??
  33. ??
  34. ????<section?name="pool">??
  35. ??
  36. ??????Name?of?pool.?Used?in?logs?and?stats. ??
  37. ??????<value?name="name">default</value>??
  38. ??
  39. ??????Address?to?accept?fastcgi?requests?on. ??
  40. ??????Valid?syntax?is?'ip.ad.re.ss:port'?or?just?'port'?or?'/path/to/unix/socket' ??
  41. ??????<value?name="listen_address">127.0.0.1:9000</value>??
  42. ??
  43. ??????<value?name="listen_options">??
  44. ??
  45. ????????Set?listen(2)?backlog ??
  46. ????????<value?name="backlog">-1</value>??
  47. ??
  48. ????????Set?permissions?for?unix?socket,?if?one?used. ??
  49. ????????In?Linux?read/write?permissions?must?be?set?in?order?to?allow?connections?from?web?server. ??
  50. ????????Many?BSD-derrived?systems?allow?connections?regardless?of?permissions. ??
  51. ????????<value?name="owner"></value>??
  52. ????????<value?name="group"></value>??
  53. ????????<value?name="mode">0666</value>??
  54. ??????</value>??
  55. ??
  56. ??????Additional?php.ini?defines,?specific?to?this?pool?of?workers. ??
  57. ??????<value?name="php_defines">??
  58. ????????<value?name="sendmail_path">/usr/sbin/sendmail?-t?-i</value>??
  59. ????????<value?name="display_errors">1</value>??
  60. ??????</value>??
  61. ??
  62. ??????Unix?user?of?processes ??
  63. ????????<value?name="user">www</value>??
  64. ??
  65. ??????Unix?group?of?processes ??
  66. ????????<value?name="group">www</value>??
  67. ??
  68. ??????Process?manager?settings ??
  69. ??????<value?name="pm">??
  70. ??
  71. ????????Sets?style?of?controling?worker?process?count. ??
  72. ????????Valid?values?are?'static'?and?'apache-like' ??
  73. ????????<value?name="style">static</value>??
  74. ??
  75. ????????Sets?the?limit?on?the?number?of?simultaneous?requests?that?will?be?served. ??
  76. ????????Equivalent?to?Apache?MaxClients?directive. ??
  77. ????????Equivalent?to?PHP_FCGI_CHILDREN?environment?in?original?php.fcgi ??
  78. ????????Used?with?any?pm_style. ??
  79. ????????<value?name="max_children">128</value>??
  80. ??
  81. ????????Settings?group?for?'apache-like'?pm?style ??
  82. ????????<value?name="apache_like">??
  83. ??
  84. ??????????Sets?the?number?of?server?processes?created?on?startup. ??
  85. ??????????Used?only?when?'apache-like'?pm_style?is?selected ??
  86. ??????????<value?name="StartServers">20</value>??
  87. ??
  88. ??????????Sets?the?desired?minimum?number?of?idle?server?processes. ??
  89. ??????????Used?only?when?'apache-like'?pm_style?is?selected ??
  90. ??????????<value?name="MinSpareServers">5</value>??
  91. ??
  92. ??????????Sets?the?desired?maximum?number?of?idle?server?processes. ??
  93. ??????????Used?only?when?'apache-like'?pm_style?is?selected ??
  94. ??????????<value?name="MaxSpareServers">35</value>??
  95. ??
  96. ????????</value>??
  97. ??
  98. ??????</value>??
  99. ??
  100. ??????The?timeout?(in?seconds)?for?serving?a?single?request?after?which?the?worker?process?will?be?terminated ??
  101. ??????Should?be?used?when?'max_execution_time'?ini?option?does?not?stop?script?execution?for?some?reason ??
  102. ??????'0s'?means?'off' ??
  103. ??????<value?name="request_terminate_timeout">0s</value>??
  104. ??
  105. ??????The?timeout?(in?seconds)?for?serving?of?single?request?after?which?a?php?backtrace?will?be?dumped?to?slow.log?file ??
  106. ??????'0s'?means?'off' ??
  107. ??????<value?name="request_slowlog_timeout">0s</value>??
  108. ??
  109. ??????The?log?file?for?slow?requests ??
  110. ??????<value?name="slowlog">logs/slow.log</value>??
  111. ??
  112. ??????Set?open?file?desc?rlimit ??
  113. ??????<value?name="rlimit_files">51200</value>??
  114. ??
  115. ??????Set?max?core?size?rlimit ??
  116. ??????<value?name="rlimit_core">0</value>??
  117. ??
  118. ??????Chroot?to?this?directory?at?the?start,?absolute?path ??
  119. ??????<value?name="chroot"></value>??
  120. ??
  121. ??????Chdir?to?this?directory?at?the?start,?absolute?path ??
  122. ??????<value?name="chdir"></value>??
  123. ??
  124. ??????Redirect?workers'?stdout?and?stderr?into?main?error?log. ??
  125. ??????If?not?set,?they?will?be?redirected?to?/dev/null,?according?to?FastCGI?specs ??
  126. ??????<value?name="catch_workers_output">yes</value>??
  127. ??
  128. ??????How?much?requests?each?process?should?execute?before?respawn. ??
  129. ??????Useful?to?work?around?memory?leaks?in?3rd?party?libraries. ??
  130. ??????For?endless?request?processing?please?specify?0 ??
  131. ??????Equivalent?to?PHP_FCGI_MAX_REQUESTS ??
  132. ??????<value?name="max_requests">500</value>??
  133. ??
  134. ??????Comma?separated?list?of?ipv4?addresses?of?FastCGI?clients?that?allowed?to?connect. ??
  135. ??????Equivalent?to?FCGI_WEB_SERVER_ADDRS?environment?in?original?php.fcgi?(5.2.2+) ??
  136. ??????Makes?sense?only?with?AF_INET?listening?socket. ??
  137. ??????<value?name="allowed_clients">127.0.0.1</value>??
  138. ??
  139. ??????Pass?environment?variables?like?LD_LIBRARY_PATH ??
  140. ??????All?$VARIABLEs?are?taken?from?current?environment ??
  141. ??????<value?name="environment">??
  142. ????????<value?name="HOSTNAME">$HOSTNAME</value>??
  143. ????????<value?name="PATH">/usr/local/bin:/usr/bin:/bin</value>??
  144. ????????<value?name="TMP">/tmp</value>??
  145. ????????<value?name="TMPDIR">/tmp</value>??
  146. ????????<value?name="TEMP">/tmp</value>??
  147. ????????<value?name="OSTYPE">$OSTYPE</value>??
  148. ????????<value?name="MACHTYPE">$MACHTYPE</value>??
  149. ????????<value?name="MALLOC_CHECK_">2</value>??
  150. ??????</value>??
  151. ??
  152. ????</section>??
  153. ??
  154. ??</workers>??
  155. ??
  156. </configuration>??

<textarea class="xml" style="display: none;" cols="100" rows="15" name="code"><?xml version="1.0" ?> <configuration> ?All relative paths in this config are relative to php's install prefix ?<section name="global_options"> ? ?Pid file ? ?<value name="pid_file">/usr/local/webserver/php/logs/php-fpm.pid</value> ? ?Error log file ? ?<value name="error_log">/usr/local/webserver/php/logs/php-fpm.log</value> ? ?Log level ? ?<value name="log_level">notice</value> ? ?When this amount of php processes exited with SIGSEGV or SIGBUS ... ? ?<value name="emergency_restart_threshold">10</value> ? ?... in a less than this interval of time, a graceful restart will be initiated. ? ?Useful to work around accidental curruptions in accelerator's shared memory. ? ?<value name="emergency_restart_interval">1m</value> ? ?Time limit on waiting child's reaction on signals from master ? ?<value name="process_control_timeout">5s</value> ? ?Set to 'no' to debug fpm ? ?<value name="daemonize">yes</value> ?</section> ?<workers> ? ?<section name="pool"> ? ? ?Name of pool. Used in logs and stats. ? ? ?<value name="name">default</value> ? ? ?Address to accept fastcgi requests on. ? ? ?Valid syntax is 'ip.ad.re.ss:port' or just 'port' or '/path/to/unix/socket' ? ? ?<value name="listen_address">127.0.0.1:9000</value> ? ? ?<value name="listen_options"> ? ? ? ?Set listen(2) backlog ? ? ? ?<value name="backlog">-1</value> ? ? ? ?Set permissions for unix socket, if one used. ? ? ? ?In Linux read/write permissions must be set in order to allow connections from web server. ? ? ? ?Many BSD-derrived systems allow connections regardless of permissions. ? ? ? ?<value name="owner"></value> ? ? ? ?<value name="gro

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