由于服务器apache抗不住目前的并发.加上前端squid配置后,问题依然无法解决.而页面程序大部分是动态.无法使用fastcgi来处理.因此想 使用nginx做为反向代理apache.整个配置安装过程很简单.在考虑高并发的情况下,在安装前就做了些优化.目前配置能抗住3000以上并发.好像 不是特别大哦?呵~~ 但足以~~ 只是还有少量499问题..期待有人跟我讨论解决；
第1部分:安装
1 建立用户及组
/usr/sbin/groupadd www
/usr/sbin/useradd -g www www
2 安装pcre 让nginx支持rewrite 方便以后所需
wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-7.8.tar.gz
tar zxvf pcre-7.8.tar.gz
cd pcre-7.8/
./configure
make && make install
3 安装nginx
wget http://sysoev.ru/nginx/nginx-0.7.58.tar.gz
tar zxvf nginx-0.7.58.tar.gz
cd nginx-0.7.58/
./configure --user=www --group=www --prefix=/usr/local/webserver/nginx --with-http_stub_status_module --with-http_ssl_module --with-cc-opt='-O2' --with-cpu-opt=opteron
make && make install
#
注意上文中的--with-cc-opt='-O2' --with-cpu-opt=opteron 这是编译器优化,目前最常用的是-02
而不是3.后面对应CPU的型号,可参照:http://wiki.gentoo.tw/index.php/HOWTO_CFLAG
第2部分:配置及优化配置文件
1 nginx.conf 配置文件:
user www www;
worker_processes 4;
# [ debug | info | notice | warn | error | crit ]
error_log /usr/local/webserver/nginx/logs/nginx_error.log crit;
pid /usr/local/webserver/nginx/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 51200;
events
{
use epoll;
worker_connections 51200;
}
http
{
include mime.types;
default_type application/octet-stream;
source_charset GB2312;
server_names_hash_bucket_size 256;
client_header_buffer_size 256k;
large_client_header_buffers 4 256k;
#size limits
client_max_body_size 50m;
client_body_buffer_size 256k;
client_header_timeout 3m;
client_body_timeout 3m;
send_timeout 3m;
#参数都有所调整.目的是解决代理过程中出现的一些502 499错误
sendfile on;
tcp_nopush on;
keepalive_timeout 120; #参数加大,以解决做代理时502错误
tcp_nodelay on;
include vhosts/upstream.conf;
include vhosts/bbs.linuxtone.conf;
}
2 upstream.conf 配置文件(这也是做负载的配置方法)
upstream.conf
upstream bbs.linuxtone.com {
server 192.168.1.4:8099;
}
3 站点配置文件
bbs.linuxtone.conf
server
{
listen 80;
server_name bbs.linuxtone.conf;
charset GB2312;
index index.html index.htm;
root /date/wwwroot/linuxtone/;
location ~ ^/NginxStatus/ {
stub_status on;
access_log off;
}
location / {
root /date/wwwroot/linuxtone/;
proxy_redirect off ;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header REMOTE-HOST $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size 50m;
client_body_buffer_size 256k;
proxy_connect_timeout 30;
proxy_send_timeout 30;
proxy_read_timeout 60;
proxy_buffer_size 256k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;
proxy_temp_file_write_size 256k;
proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
proxy_max_temp_file_size 128m;
proxy_pass http://bbs.linuxtone.com;
}
#参数都有所调整.目的是解决代理过程中出现的一些502 499错误
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