基于nginx的负载均衡

1.场景

nginx3连接广域网其他服务器在内网

nginx 1 ---------------------

/ \ \ \

server 1 server 2 server3 nginx3 <--

\ / / /

nginx 2 -----------------------

2.思路

nginx3为入口反向代理、负载均衡到 nginx1、2

nginx 1、2 反向代理并负载均衡 servier1、2、3

3.配置文件

nginx3配置：

upstream lb.tin.com {
server 10.221.148.167:80; #nginx1
server 10.251.216.232:80; #nginx2
}

upstream pro1.tin.com {

server 10.221.148.167:80;
}

upstream pro2.tin.com {
server 10.251.216.232:80;
}

server {
listen 80;
server_name loalhost;
location /pro1 {
proxy_pass http:// pro1.tin.com;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location /pro2 {
proxy_pass http:// pro2.tin.com;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

}

nginx1、2配置：

nginx1例：

upstream pro1.tin.com {
server 10.221.148.160:8080; #server1
server 10.251.216.230:8080; #server2

server 10.251.216.231:8080; #server3

}

upstream server1.tin.com {

server 10.221.148.160:8080;
}

upstream server2.tin.com {
server 10.251.216.230:8080;
}

upstream server3.tin.com {
server 10.251.216.231:8080;
}

server {
listen 8080;
server_name loalhost;
location /server1 {
proxy_pass http:// server1.tin.com;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location /server2 {
proxy_pass http://server2.tin.com; proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

location /server3 {
proxy_pass http://server3.tin.com; proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

}