Centos7.4 Nginx反向代理+负载均衡配置

Ningx是一款高性能的HTTP和反向代理服务器，配置起来也比较简单。

测试环境：

　　172.16.65.190　　Nginx-反向代理

　　172.16.65.191　　Ningx-Web

　　172.16.65.192　　Nginx-Web

在三台Server安装Nginx:

# yum install -y nginx

在172.16.65.190配置Nginx反向代理+负载均衡：

# vim /etc/nginx/nginx.conf

user nginx;
worker_processes auto;
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 {
    worker_connections 1024;
}

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.
    include /etc/nginx/conf.d/*.conf;
    
    # 后端Web服务器，默认使用轮询机制
    upstream proxy_test {
      server 172.16.65.191:80 weight=1;
      server 172.16.65.192:80 weight=1;
      ip hash;　　
    }

    server {
        listen       80;　　# 监听的端口
        server_name  www.test.com;　　# 监听的域名
        location /abc/ {　　# 监听域名的二级域名
          proxy_pass  http://proxy_test/;  # 这里的proxy_test和上面的upstream proxy_test对应
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

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

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

# nginx -s reload    # 重新加载Nginx配置文件

后端Web配置

默认页面路径 /usr/share/nginx/html/index.html

在172.16.65.191 配置默认页面内容为Server001，启动Nginx

在172.16.65.192 配置默认页面内容为Server002，启动Nginx

测试效果

在Client配置Hosts解析www.test.com

第一次访问

第二次访问