CentOS 6.7配置Nginx 1.8负载均衡

本教程使用Vultr的VPS搭建，准备三台VPS，一主两从

master - 45.32.90.100

slave1  - 45.32.92.47

slave2  - 45.32.89.205

1、编译安装Nginx 1.8

三台全装，并启动Nginx

/usr/local/nginx/sbin/nginx

2、修改master配置文件

在http段增加：

    upstream backend {

        server 45.32.92.47;

        server 45.32.89.205;

        }

在server的location段中加入：

            proxy_pass http://backend;

3、完整nginx.conf如下：

#user  nobody;

worker_processes  ;

#error_log  logs/error.log;

#error_log  logs/error.log  notice;

#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {

    worker_connections  ;

}

http {

    include       mime.types;

    default_type  application/octet-stream;

    #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  logs/access.log  main;

    sendfile        on;

    #tcp_nopush     on;

    #keepalive_timeout  ;

    keepalive_timeout  ;

    #gzip  on;

    upstream backend {

        server 45.32.92.47 weight=;

        server 45.32.89.205;

        }

    server {

        listen       ;

        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {

            root   html;

            index  index.html index.htm;

            proxy_pass http://backend;

        }

        #error_page                /.html;

        # redirect server error pages to the static page /50x.html

        #

        error_page        /50x.html;

        location = /50x.html {

            root   html;

        }

    }

}

4、重启master上的nginx

/usr/local/nginx/sbin/nginx -s reload

5、验证

在slave1中修改网页文件

echo "slave1" > /usr/local/nginx/html/index.html

在slave2中修改网页文件

echo "slave2" > /usr/local/nginx/html/index.html

在浏览器中输入master的ip，刷新查看，可以看到交替出现slave1和slave2

此外，还可以设置权重

    upstream backend {

        server 45.32.92.47 weight=;

        server 45.32.89.205 weight=;

        }

CentOS 6.7配置Nginx 1.8负载均衡的相关教程结束。