Nginx的反向代理（三）

第一章：为什么要用反向代理,有哪些软件可以使用？

反向代理软件
硬件：F5
软件：Nginx HAproxy LVS等

第二章： Nginx反向代理参数解释

官方案例：location / {    proxy_pass       http://localhost:8000;    proxy_set_header Host      $host;    proxy_set_header X-Real-IP $remote_addr;}

解释：proxy_pass       http://172.16.1.7:8080;        #将用户的请求转发给后端的nginx服务器处理    proxy_set_header Host      $host;                #将用户访问的地址记录到自己的HOST记录上proxy_set_header X-Real-IP $remote_addr;        #将用户访问的IP记录到自己的IP地段上常用的代理配置参数：proxy_set_header Host $http_host;                    #将用户访问的地址记录到自己的HOST记录上    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;    #将用户访问IP记录到自己的X-Forwarded-For地段上proxy_connect_timeout 30;                            proxy_send_timeout 60;proxy_read_timeout 60;proxy_buffering on;proxy_buffer_size 32k;proxy_buffers 4 128k;

第三章：Nginx反向代理配置

需求：
web01 8080 web01
lb 80 跳转到web01上的8080

web服务器操作：

1.配置nginx文件

[root@web01 ~]# cat /etc/nginx/conf.d/web01.conf server {  listen 8080;  server_name www.mysun.com;  location / {     root /code;     index www.html;  }}

2.写入测试页面

echo "web01" > /code/www.html

3.检查并重启Nginx

nginx -tsystemctl restart nginx 

负载服务器操作

1.安装NGINX

yum -y install nginx  #安装官方版本

2.编写代理需要的参数配置文件

[root@lb01 ~]# cat /etc/nginx/proxy_params proxy_set_header Host $http_host;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;proxy_connect_timeout 30;proxy_send_timeout 60;proxy_read_timeout 60;proxy_buffering on;proxy_buffer_size 32k;proxy_buffers 4 128k;

3.编写代理服务配置文件

[root@lb01 ~]# cat /etc/nginx/conf.d/proxy.conf server {   listen 80;   server_name www.mysun.com;   location / {      proxy_pass  http://172.16.1.7:8080;      include proxy_params;   }}

4.检查并启动Nginx

nginx -tsystemctl start nginx 

windows操作：
绑定hosts文件
10.0.0.5 www.mysun.com

第四章：反向代理结合负载均衡配置

1.地址规划

web01    www.mysun.com  blog.mysun.com  bbs.mysun.com web02   www.mysun.com  blog.mysun.com  bbs.mysun.com 

负载lb01

www.mysun.com
blog.mysun.com
bbs.mysun.com

2.配置web服务器

cat >/etc/nginx/conf.d/www.conf <<EOFserver {  listen 80;  server_name www.mysun.com;  location / {     root /code;     index www.html;  }}EOFcat >/etc/nginx/conf.d/bbs.conf <<EOFserver {  listen 80;  server_name bbs.mysun.com;  location / {     root /code;     index bbs.html;  }}EOFcat >/etc/nginx/conf.d/blog.conf <<EOFserver {  listen 80;  server_name blog.mysun.com;  location / {     root /code;     index blog.html;  }}EOFecho "$(hostname) bbs" > /code/bbs.htmlecho "$(hostname) www" > /code/www.htmlecho "$(hostname) blog" > /code/blog.htmlnginx -t systemctl restart nginx 

3.配置lb服务器

[root@lb01 ~]# cat /etc/nginx/conf.d/proxy.conf upstream web_pools {   server 172.16.1.7;   server 172.16.1.8;}server {   listen 80;   server_name www.mysun.com bbs.mysun.com blog.mysun.com;   location / {      proxy_pass  http://web_pools;      include proxy_params;   }}nginx -t systemctl restart nginx 

4.windows操作：

10.0.0.5 www.mysun.com bbs.mysun.com blog.mysun.com