nginx的一些配置

user www www;
worker_processes 1;
error_log logs/error.log;
pid logs/nginx.pid;
worker_rlimit_nofile 65535;
events {
    use epoll;
    worker_connections 65535;
}
http {
    include mime.types;
    default_type application/octet-stream;
    include /usr/local/nginx/conf/reverse-proxy.conf;
    sendfile on;
    keepalive_timeout 65;
    gzip on;
    client_max_body_size 50m; #缓冲区代理缓冲用户端请求的最大字节数,可以理解为保存到本地再传给用户
    client_body_buffer_size 256k;
    client_header_timeout 3m;
    client_body_timeout 3m;
    send_timeout 3m;
    proxy_connect_timeout 300s; #nginx跟后端服务器连接超时时间(代理连接超时)
    proxy_read_timeout 300s; #连接成功后，后端服务器响应时间(代理接收超时)
    proxy_send_timeout 300s;
    proxy_buffer_size 64k; #设置代理服务器（nginx）保存用户头信息的缓冲区大小
    proxy_buffers 4 32k; #proxy_buffers缓冲区，网页平均在32k以下的话，这样设置
    proxy_busy_buffers_size 64k; #高负荷下缓冲大小（proxy_buffers*2）
    proxy_temp_file_write_size 64k; #设定缓存文件夹大小，大于这个值，将从upstream服务器传递请求，而不缓冲到磁盘
    proxy_ignore_client_abort on; #不允许代理端主动关闭连接
    server {
        listen 80;
        server_name localhost;
        location / {
            root html;
            index index.html index.htm;
        }
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
            root html;
        }
    }
}

如果想对后端机器做负载均衡，像下面这配置就可以把对nagios.xxx123.tk的请求分发给内网的131和132这两台机器做负载均衡了。

upstream monitor_server {
    server 192.168.0.131:80;
    server 192.168.0.132:80;
}
 
server
{
    listen 80;
    server_name nagios.xxx123.tk;
    location / {
        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; 
        proxy_pass http://monitor_server;
    }
    access_log logs/nagios.xxx123.tk_access.log;
}