nginx性能优化

作者：Mike.Xu 发表于: December 28, 2009 9:09 PM
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链接：http://www.dbasky.net/archives/2009/12/nginx.html
操作系统：CentOS 5.3
 
nginx的安装就不详细介绍了,请大家移步到我以前写的二篇文章.

Ngin＋php 搭建高性能web服务器

搭建nginx + python + django +memcached+ mysql +fastcgi 环境

1.编译安装

./configure --with-poll_module --with-http_ssl_module --with-http_gzip_static_module --with-http_perl_module --with-md5=/usr/include --with-md5-asm --with-sha1=/usr/include --with-sha1-asm
make
make install

2.制作SSL证书
生成CA证书

openssl req -days 3650 -nodes -new -x509 -keyout ca.key -out ca.pem -config OpenSSL.cnf

生成自签名ssl证书

openssl req -days 3650 -nodes -new -keyout cert.key -out cert.pem -config OpenSSL.cnf

对证书进行签名

openssl ca -days 3650 -out cert.pem -in cert.pem -extensions server -config OpenSSL.cnf

3.配置优化
       修改nginx.conf, 工作进程10个，使用epoll事件模型，并发连接使用默认的1024个，启用gzip动态和静态压缩。

worker_processes 10;

events {
  use epoll;
  worker_connections 1024;
}

http {
    gzip  on;
    gzip_static on;
 
    gzip_comp_level     9;
    gzip_min_length     1k;
    gzip_proxied        any;
    gzip_types          text/plain text/xml application/xml application/xml+rss;
    #gzip_disable        "MSIE [1-6] \.";
    #gzip_vary           on;
}

复制cert.key和cert.pem到conf目录，去掉HTTPS server下面的注释，启用SSL。

4.启用php
下载安装spawn-fcgi，建立/tmp/php-fcgi.sock的连接，并添加nginx配置。

location ~ \.php$ {
    root           html;
    fastcgi_pass   unix:/tmp/php-fcgi.sock;
    fastcgi_index  index.php;
    fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    fastcgi_param  PATH_INFO        $fastcgi_path_info;
    fastcgi_param  PATH_TRANSLATED  $document_root$fastcgi_path_info;
    include        fastcgi_params;
}

下载安装APC、eAccelerator为php加速。

建立缓存目录

mkdir /var/tmp/eaccelerator

eAccelerator配置

[eAccelerator]
zend_extension_ts = "/usr/lib/php5/ext/eAccelerator.so"
eaccelerator.shm_size = "16"
eaccelerator.cache_dir = "/var/tmp/eaccelerator"
eaccelerator.enable = "1"
eaccelerator.optimizer = "1"
eaccelerator.check_mtime = "1"
eaccelerator.debug = "0"
eaccelerator.filter = ""
eaccelerator.shm_max = "0"
eaccelerator.shm_ttl = "0"
eaccelerator.shm_prune_period = "0"
eaccelerator.shm_only = "0"
eaccelerator.compress = "1"
eaccelerator.compress_level = "9"

5.启动nginx
运行命令

sudo spawn-fcgi -f /usr/bin/php-cgi -s /tmp/php-fcgi.sock -F 2 -u nobody
sudo /usr/local/nginx/sbin/nginx

为了方便管理，使用如下脚本，保存为nginx，放到/etc/init.d目录

#! /bin/sh
#
# nginx daemon script
#

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/local/nginx/sbin/nginx
NAME=nginx
PIDFILE=/usr/local/nginx/logs/$NAME.pid
PHPSOCKET=/tmp/php-fcgi.sock
PHPPIDFILE=/tmp/run/php-fcgi.pid
PHPSPAWN="spawn-fcgi -f /usr/bin/php-cgi -s $PHPSOCKET -P $PHPPIDFILE -F 2 -u nobody"

test -x $DAEMON || exit 0

set -e

case "$1" in
  start)
echo "Starting $NAME."
$DAEMON
$PHPSPAWN
;;

  stop)
echo "Stopping $NAME."
$DAEMON -s stop
kill `cat $PHPPIDFILE`
rm -f $PHPSOCKET $PHPPIDFILE
;;

  restart)
echo "Restarting $NAME."
$DAEMON -s reopen
kill `cat $PHPPIDFILE`
rm -f $PHPSOCKET $PHPPIDFILE
$PHPSPAWN
;;

  reload)
    if [ ! -f $PIDFILE ]; then
      echo "nginx not started."
      exit 1
    fi
    echo "Reloading $NAME."
    $DAEMON -s reload
    ;;

  test)
    $DAEMON -t
    ;;

  *)
N=/etc/init.d/$NAME
echo "Usage: $N start|stop|restart|reload|test" >&2
exit 1
;;
esac

exit 0