CentOS6.5 Nginx优化编译配置

说到Nginx，它真的算是我在运维工作中的好朋友，它优异的性能和极高的工作效率实在是让人大爱，来自internet的报告称其epoll模型能够支持高达50000个并发连接数。

Epoll[维基百科]:

epoll是Linux下
多路复用IO接口select/poll的增强版本，它能显著提高程序在大量并发连接中只有少量活跃的情况下的系统CPU利用率，因为它会复用文件描述符
集合来传递结果而不用迫使开发者每次等待事件之前都必须重新准备要被侦听的文件描述符集合，另一点原因就是获取事件的时候，它无须遍历整个被侦听的描述符
集，只要遍历那些被内核IO事件异步唤醒而加入Ready队列的描述符集合就行了。epoll除了提供select/poll那种IO事件的电平触发 （Level
Triggered）外，还提供了边沿触发（Edge
Triggered），这就使得用户空间程序有可能缓存IO状态，减少epoll_wait/epoll_pwait的调用，提高应用程序效率。

安装Nginx，这里我略过使用包管理器而使用编译的方式让Nginx运行起来：

1、安装Zlib函数库

####Gcc编译环境是必须条件#####[[email protected]-it ~]# yum install gcc-c++ make autoconf aotomake

[[email protected]-it ~]# tar zxf zlib-1.2.8.tar.gz

[[email protected]-it ~]# cd zlib-1.2.8[[email protected]-it zlib-1.2.8]#./configure --prefix=/software/zlib

[[email protected]-it zlib-1.2.8]# make && make install

2、添加对rewrite的支持，编译参数中启用了对utf8字符的支持，以便nginx支持中文的正则表达式

[[email protected]-it ~]# tar zxf pcre-8.35.tar.gz

[[email protected]-it ~]# cd pcre-8.35[[email protected]-it pcre-8.35]#./configure --prefix=/software/pcre --enable-utf8 --enable-unicode-properties

[[email protected]-it pcre-8.35]# make && make install

3、添加对https 的支持

[[email protected]-it ~]# tar zxf openssl-1.0.1h.tar.gz

[[email protected]-it ~]# cd openssl-1.0.1h[[email protected]-it openssl-1.0.1h]#./config --prefix=/software/openssl

[[email protected]-it openssl-1.0.1h]# make && make install

编 译TCMalloc，它是由Google公司发开的一款开源工具，goole-perftools中的一成员，TCMalloc在内存的分配效率和速度要
比标准的glibc库好得多，它不但可以用来优化高并发下的Mysql，从而降低系统的负载，还可以用于Nginx实现同样的功能，因此，对于高并发的
Nginx来说无疑是如虎添翼。

4、安装libunwind库

[[email protected]-it ~]# tar zxf libunwind-1.1.tar.gz

[[email protected]-it ~]# cd libunwind-1.1[[email protected]-it libunwind-1.1]# CFLAGS=-fPIC ./configure --prefix=/software/google-libunwind

[[email protected]-it libunwind-1.1]# make CFLAGS=-fPIC && make CFLAGS=-fPIC install

5、安装google-perftools

[[email protected]-it ~]# tar zxf gperftools-2.2.tar.gz

[[email protected]-it ~]# cd gperftools-2.2[[email protected]-it gperftools-2.2]# LDFLAGS="-L/software/google-libunwind/lib" CPPFLAGS="-I/software/google-libunwind/include"./configure --prefix=/software/google-perftools

[[email protected]-it gperftools-2.2]# make && make install

6、添加共享库路径

[[email protected]-it ~]# echo "/software/google-libunwind/lib/">>/etc/ld.so.conf

[[email protected]-it ~]# echo "/software/google-perftools/lib/">>/etc/ld.so.conf

[[email protected]-it ~]# echo "/software/zlib/lib/">>/etc/ld.so.conf

[[email protected]-it ~]# echo "/software/pcre/lib/">>/etc/ld.so.conf

[[email protected]-it ~]# ldconfig -v

7、编译Nginx

[[email protected]-it ~]# groupadd -g 1500 nginx

[[email protected]-it ~]# useradd -M -u 1500-g nginx -s /sbin/nologin nginx

[[email protected]-it ~]# mkdir /var/tmp/nginx

[[email protected]-it ~]# chown nginx:nginx /var/tmp/nginx/[[email protected]-it ~]# tar zxf nginx-1.7.1.tar.gz

[[email protected]-it ~]# cd nginx-1.7.1

#############注释该文件的174行取消debug模式##############

[[email protected]-it nginx-1.7.1]# vi auto/cc/gcc

    173# debug174# CFLAGS="$CFLAGS -g"

######因为google-perftools库的安装路径并非默认，所以这里又要修改一次源码####

[[email protected]-it nginx-1.7.1]# sed -i "s#/usr/local#/software/google-perftools#"auto/lib/google-perftools/conf

[[email protected]-it nginx-1.7.1]#./configure --prefix=/software/nginx --user=nginx --group=nginx --with-http_stub_status_module --with-http_ssl_module --with-http_realip_module --with-http_gzip_static_module --with-debug --http-client-body-temp-path=/var/tmp/nginx/client --http-proxy-temp-path=/var/tmp/nginx/proxy --http-fastcgi-temp-path=/var/tmp/nginx/fastcgi --http-uwsgi-temp-path=/var/tmp/nginx/uwsgi --http-scgi-temp-path=/var/tmp/nginx/scgi --with-pcre=/root/pcre-8.35--with-openssl=/root/openssl-1.0.1h--with-zlib=/root/zlib-1.2.8[[email protected]-it nginx-1.7.1]# make && make install

8、先添加一个启动脚本，让Nginx run起来

[[email protected]-it ~]# vi /etc/init.d/nginx

#!/bin/bash# nginx Startup script for the Nginx HTTP Server
# it is v.0.0.2 version.# chkconfig: - 85 15
# description: Nginx is a high-performance web and proxy server.
# It has a lot of features, but it‘s not for everyone.
# processname: nginx# pidfile: /software/nginx/logs/nginx.pid
# config: /software/nginx/conf/nginx.conf

nginxd=/software/nginx/sbin/nginx

nginx_config=/software/nginx/conf/nginx.conf

nginx_pid=/software/nginx/logs/nginx.pid

RETVAL=0

prog="nginx"# Source function library../etc/rc.d/init.d/functions

# Source networking configuration../etc/sysconfig/network

# Check that networking is up.[ ${NETWORKING}="no"]&&exit0[-x $nginxd ]||exit0
# Start nginx daemons functions.

start(){if[-e $nginx_pid ];then

echo "nginx already running...."exit1fi

echo -n $"Starting $prog: "

daemon $nginxd -c ${nginx_config}

RETVAL=$?

echo

[ $RETVAL =0]&& touch /var/lock/subsys/nginx

return $RETVAL

}
# Stop nginx daemons functions.

stop(){

echo -n $"Stopping $prog: "

killproc $nginxd

RETVAL=$?

echo

[ $RETVAL =0]&& rm -f /var/lock/subsys/nginx /usr/local/nginx/logs/nginx.pid

}

reload(){

echo -n $"Reloading $prog: "
#kill -HUP `cat ${nginx_pid}`

killproc $nginxd -HUP

RETVAL=$?

echo

}
# See how we were called.case"$1"in

start)

start

;;

stop)

stop

;;

reload)

reload

;;

restart)

stop

start

;;

status)

status $prog

RETVAL=$?;;*)

echo $"Usage: $prog {start|stop|restart|reload|status|help}"
exit1esacexit $RETVAL

#########赋权让其run起来#########[[email protected]-it ~]# chmod 755/etc/init.d/nginx && chkconfig nginx on

[[email protected]-it ~]# service nginx start

Starting nginx:[  OK  ][[email protected]-it ~]# netstat -pant | grep 80

tcp        000.0.0.0:800.0.0.0:*                   LISTEN      37831/nginx      

9、Nginx run起来了，配置前面的google-perftools库

#####创建线程目录#####

[[email protected]-it ~]# mkdir /tmp/tcmalloc

[[email protected]-it ~]# chmod 0777/tmp/tcmalloc/

####修改Nginx配置文件#####

[[email protected]-it ~]# vi /software/nginx/conf/nginx.conf

pid        logs/nginx.pid;

google_perftools_profiles /tmp/tcmalloc;

###查看google-perftools是否加载###

[[email protected]-it ~]# service nginx restart

Stopping nginx:[  OK  ]Starting nginx:[  OK  ][[email protected]-it ~]#  lsof -n | grep tcmalloc

nginx     37882   nginx    9w      REG              253,001179654/tmp/tcmalloc.37882

nginx     37883   nginx   11w      REG              253,001179655/tmp/tcmalloc.37883

####每一行输出的数据表示Nginx主配置文件中worker_processes的值，其每个线程文件后面的数值为Nginx启动的PID####

[[email protected]-it ~]# ps aux | grep nginx

root     378800.00.230200892?Ss00:270:00 nginx: master process /software/nginx/sbin/nginx -c /software/nginx/conf/nginx.conf

nginx    378820.01.1348043844?        S    00:270:00 nginx: worker process

nginx    378830.01.1348043772?        S    00:270:00 nginx: worker process

####iptables 开80端口####[[email protected]-it ~]# iptables -I INPUT -p tcp --dport 80-j ACCEPT

访问Nginx，还有些细节处理本来想一并写在本文中，但是不想一篇文章太长篇了，所以决定分成上下….

CentOS6.5 Nginx优化编译配置,布布扣,bubuko.com