简单的负载均衡

client -- > reverser server --> server 129
                            --> server 130

准备

1.配置3台虚拟机，操作系统使用centos7.0+，ip如下

192.168.154.129
192.168.154.130
192.168.154.132

2 一个纯静态html文件-index.html

<html>
<head>
<title>hi nlb!</title>
</head>

<body>
hi~, this is 192.168.154.129!
</body>
</html>

3.通用配置

# 在3台上安装nginx
yum install -y nginx

# 关闭防火墙
setenforce 0

chkconfig iptables off
firewall-cmd --state

# 稍后会修改服务器目录为/nlb
mkdir /nlb
vim /nlb/index.html # 根据ip修改准备index.html

代理机配置（反向代理+负载均衡配置）

vim /etc/nginx/nginx.conf

upstream nlb {
 ip_hash;
 server 192.168.154.129:6180;
 server 192.168.154.130:6180;
}

server {
 listen 6180 default_server;
 listen [::]:6180 default_server;
 server_name www.nlb.com;
 root /nlb/;

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

 location / {
  proxy_pass http://nlb;
  proxy_set_header Host $host:server_port;
 }

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

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

启动服务

service nginx start

129服务器上的配置

vim /etc/nginx/nginx.conf

server {
 listen 6180 default_server;
 listen [::]:6180 default_server;
 server_name _;
 root /nlb;

 # 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 {
 }
}

启动服务

service nginx start

130服务器上的配置

vim /etc/nginx/nginx.conf

server {
 listen 6180 default_server;
 listen [::]:6180 default_server;
 server_name _;
 root /nlb;

 # 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 {
 }
}

启动服务

service nginx start

准备

代理机配置（反向代理+负载均衡配置）

129服务器上的配置

130服务器上的配置

浏览器上访问 http://192.168.154.132:6180/index.html

浏览器上访问 `http://192.168.154.132:6180/index.html`