搭建nginx反向代理用做内网域名转发，搭建nginx

搭建nginx反向代理用做内网域名转发

一、安装nginx

$ sudo yum install nginx

二、修改配置文件

1 先备份配置文件

$ sudo cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak

2 将配置文件/etc/nginx/nginx.conf修改成如下形式：

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;
# Add by vin
worker_processes 1;

error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    # Add by vin
    worker_connections 65535;
}

http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;

    # Add by vin
    gzip on;
    client_max_body_size 50m;
    client_body_buffer_size 256k;
    client_header_timeout 3m;
    client_body_timeout 3m;
    send_timeout 3m;
    # nginx跟后端服务器连接超时时间(代理连接超时)
    proxy_connect_timeout 300s;
    # 连接成功后，后端服务器响应超时时间(代理接收超时)
    proxy_read_timeout 300s;
    # 连接成功后，nginx发往后端服务器超时时间(代理发送超时)
    proxy_send_timeout 300s;
    # 设置本代理服务器（nginx）保存用户头信息的缓冲区大小
    proxy_buffer_size 64k;
    # proxy_buffers缓冲区，网页平均在32k以下的话，这样设置
    proxy_buffers 4 32k; 
    # 高负荷下缓冲大小（proxy_buffers*2）
    proxy_busy_buffers_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_temp_file_write_size 64k;
    # 不允许本代理主动关闭连接
    proxy_ignore_client_abort on;

    server {
        listen       80 default_server;
        listen       [::]:80 default_server;
        server_name  _;
        root         /usr/share/nginx/html;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
        }

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }

# Settings for a TLS enabled server.
#
#    server {
#        listen       443 ssl http2 default_server;
#        listen       [::]:443 ssl http2 default_server;
#        server_name  _;
#        root         /usr/share/nginx/html;
#
#        ssl_certificate "/etc/pki/nginx/server.crt";
#        ssl_certificate_key "/etc/pki/nginx/private/server.key";
#        ssl_session_cache shared:SSL:1m;
#        ssl_session_timeout  10m;
#        ssl_ciphers HIGH:!aNULL:!MD5;
#        ssl_prefer_server_ciphers on;
#
#        # Load configuration files for the default server block.
#        include /etc/nginx/default.d/*.conf;
#
#        location / {
#        }
#
#        error_page 404 /404.html;
#            location = /40x.html {
#        }
#
#        error_page 500 502 503 504 /50x.html;
#            location = /50x.html {
#        }
#    }

}

3 新建反向代理配置文件

$ sudo touch /etc/nginx/conf.d/reverse-proxy.conf

4 编辑反向代理配置文件成如下形式：

server
{
    listen 80;
    server_name test.vqin.xin;
    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://10.39.27.125;
    }
    access_log /var/log/nginx/test.vqin.xin_access.log;
}

server
{
    listen 80;
    server_name ac.vqin.xin;
    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://10.39.27.125;
    }
    access_log /var/log/nginx/ac.vqin.xin_access.log;

}

server
{
    listen 80;
    server_name math.vqin.xin;
    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://10.39.27.203:8080;
    }
    access_log /var/log/nginx/math.vqin.xin_access.log;

}

5 如果想对后端机器做负载均衡，像下面这配置就可以把对math.vqin.xin的请求分发给内网的202和203这两台机器做负载均衡了。

sudo vim /etc/nginx/conf.d/reverse-proxy.conf

upstream monitor_server {
    server 10.39.27.202:8080;
    server 10.39.27.203:8080;
}

server
{
    listen 80;
    server_name math.vqin.xin;
    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  /var/log/nginx/math.vqin.xin_access.log;
}

三、重启nginx让配置生效

测试

现在我们可以直接通过不同的域名访问内网中的不同机器了。

访问http://test.vqin.xin 等价于访问http://10.39.27.125

访问http://math.vqin.xin等价于访问http://10.39.27.203:8080