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 [网站架构]安装Nginx（负载均衡器）
软件技术
lhwork 发表于 2007/1/18 12:45:38 |
| 一、) 安装Nginx1.) 安装Nginx发音为[engine x]，是由俄罗斯人Igor Sysoev建立的项目,基于BSD许可。据说他当初是F5的成员之一，英文主页：http://nginx.net。俄罗斯的一些大网站已经使用它超过两年多了，一直表现不凡。Nginx的编译参数如下：[root@localhost]#./configure --prefix=/usr/local/server/nginx --with-openssl=/usr/include \
--with-pcre=/usr/include/pcre/ --with-http_stub_status_module --without-http_memcached_module \
--without-http_fastcgi_module --without-http_rewrite_module --without-http_map_module \
--without-http_geo_module --without-http_autoindex_module
在这里，需要说明一下，由于Nginx的配置文件中我想用到正则，所以需要 pcre 模块的支持。我已经安装了 pcre 及 pcre-devel 的rpm包，但是 Ngxin 并不能正确找到 .h/.so/.a/.la 文件，因此我稍微变通了一下：[root@localhost]#mkdir /usr/include/pcre/.libs/
[root@localhost]#cp /usr/lib/libpcre.a /usr/include/pcre/.libs/libpcre.a
[root@localhost]#cp /usr/lib/libpcre.a /usr/include/pcre/.libs/libpcre.la
然后，修改 objs/Makefile 大概在908行的位置上，注释掉以下内容：./configure --disable-shared
接下来，就可以正常执行 make 及 make install 了。
2.) 修改配置文件 /usr/local/server/nginx/conf/nginx.conf以下是我的 nginx.conf 内容，仅供参考：#运行用户
user nobody nobody;
#启动进程
worker_processes 2;
#全局错误日志及PID文件
error_log logs/error.log notice;
pid logs/nginx.pid;
#工作模式及连接数上限
events {
use epoll;
worker_connections 1024;
}
#设定http服务器，利用它的反向代理功能提供负载均衡支持
http {
#设定mime类型
include conf/mime.types;
default_type application/octet-stream;
#设定日志格式
log_format main '$remote_addr - $remote_user [$time_local] '
'"$request" $status $bytes_sent '
'"$http_referer" "$http_user_agent" '
'"$gzip_ratio"';
log_format download '$remote_addr - $remote_user [$time_local] '
'"$request" $status $bytes_sent '
'"$http_referer" "$http_user_agent" '
'"$http_range" "$sent_http_content_range"';
#设定请求缓冲
client_header_buffer_size 1k;
large_client_header_buffers 4 4k;
#开启gzip模块
gzip on;
gzip_min_length 1100;
gzip_buffers 4 8k;
gzip_types text/plain;
output_buffers 1 32k;
postpone_output 1460;
#设定access log
access_log logs/access.log main;
client_header_timeout 3m;
client_body_timeout 3m;
send_timeout 3m;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
#设定负载均衡的服务器列表
upstream mysvr {
#weigth参数表示权值，权值越高被分配到的几率越大
#本机上的Squid开启3128端口
server 192.168.8.1:3128 weight=5;
server 192.168.8.2:80 weight=1;
server 192.168.8.3:80 weight=6;
}
#设定虚拟主机
server {
listen 80;
server_name 192.168.8.1 www.yejr.com;
charset gb2312;
#设定本虚拟主机的访问日志
access_log logs/www.yejr.com.access.log main;
#如果访问 /img/*, /js/*, /css/* 资源，则直接取本地文件，不通过squid
#如果这些文件较多，不推荐这种方式，因为通过squid的缓存效果更好
location ~ ^/(img|js|css)/ {
root /data3/Html;
expires 24h;
}
#对 "/" 启用负载均衡
location / {
proxy_pass http://mysvr;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
}
#设定查看Nginx状态的地址
location /NginxStatus {
stub_status on;
access_log on;
auth_basic "NginxStatus";
auth_basic_user_file conf/htpasswd;
}
}
}
运行以下命令检测配置文件是否无误： 如果没有报错，那么就可以开始运行Nginx了，执行以下命令即可：
备注：conf/htpasswd 文件的内容用 apache 提供的 htpasswd 工具来产生即可，内容大致如下：
3.) 查看 Nginx 运行状态
输入地址 http://192.168.8.1/NginxStatus/，输入验证帐号密码，即可看到类似如下内容：
Active connections: 328
server accepts handled requests
9309 8982 28890
Reading: 1 Writing: 3 Waiting: 324
第一行表示目前活跃的连接数
第三行的第三个数字表示Nginx运行到当前时间接受到的总请求数，如果快达到了上限，就需要加大上限值了。
第四行看不懂 :(
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回复:安装Nginx（负载均衡器）
软件技术
情趣内衣(游客)发表评论于2010/9/17 21:53:17 |
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回复:安装Nginx（负载均衡器）
软件技术
情趣内衣(游客)发表评论于2010/9/16 17:48:01 |
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回复:安装Nginx（负载均衡器）
软件技术
情趣内衣(游客)发表评论于2010/9/14 20:05:36 |
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回复:安装Nginx（负载均衡器）
软件技术
ugg boots(游客)发表评论于2010/7/28 17:11:24 |
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