Nginx配置详解

 

在进行Nginx配置的时候会出现很多不明白的地方,其实有些时候只要换一个思维的方式就能找多你要解决问题的方法。官方配置样例:http://wiki.nginx.org/NginxFullExample

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#运行用户   
user nobody nobody;
#启动进程
worker_processes 4;
#全局错误日志及PID文档 [ debug | info | notice | warn | error | crit ]
error_log logs/error.log notice;
pid logs/Nginx.pid;
#工作模式及连接数上限
events {
#工作模式有:# use [ kqueue | rtsig | epoll | /dev/poll | select | poll ] ;
use epoll;
worker_connections 1024;
}
#设定http服务器,利用他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; #指令激活或停用的sendfile()的用法。
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 utf8;
#设定本虚拟主机的访问日志
access_log logs/www.yejr.com.access.log main;
#假如访问 /img/*, /js/*, /css/* 资源,则直接取本地文档,不通过squid
#假如这些文档较多,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;
}
# error_page 404 /404.html;

# location /404.html {
# root /spool/www;
# charset on;
# source_charset koi8-r;
# }
# location /old_stuff/ {
# rewrite ^/old_stuff/(.*)$ /new_stuff/$1 permanent;
# }
#location /download/ {
# valid_referers none blocked server_names *.example.com;
# if ($invalid_referer) {
# #rewrite ^/ http://www.example.com/;
# return 403;
# }
# rewrite_log on;
# # rewrite /download/*/mp3/*.any_ext to /download/*/mp3/*.mp3
# rewrite ^/(download/.*)/mp3/(.*)\..*$ /$1/mp3/$2.mp3 break;
# root /spool/www;
# # autoindex on;
# access_log /var/log/nginx-download.access_log download;
# }
# location ~* ^.+\.(jpg|jpeg|gif)$ {
# root /spool/www;
# access_log off;
# expires 30d;
#}
}
}
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备注:conf/htpasswd 文档的内容用 apache 提供的 htpasswd 工具来产生即可.

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

第一行表示现在活跃的连接数,第三行的第三个数字表示Nginx运行着。