利用Nginx做前置机负载均衡
基于树状的负载在应用层解决高并发问题，nginx做代理服务器进行负载均衡，场景如下：1.本机模拟，模拟成3台
2.前置机为nginx，端口为80
3.应用服务器端口分别为8082和8083都以nginx进行模拟
4.nginx版本为：nginx-1.6.2
应用服务器1配置：
#usernobody;
worker_processes1;
events {
worker_connections1024;
}
http {
include mime.types;
default_typeapplication/octet-stream;
sendfile on;
keepalive_timeout65;
server {
listen 8083;
server_namelocalhost;
location / {
root html;
indexindex.html index.htm;
}
error_page 500 502 503 504/50x.html;
location = /50x.html {
root html;
}
}
}
应用服务器2配置：
#usernobody;
worker_processes1;
events {
worker_connections1024;
}
http {
include mime.types;
default_typeapplication/octet-stream;
sendfile on;
keepalive_timeout65;
server {
listen 8082;
server_namelocalhost;
location / {
root html;
indexindex.html index.htm;
}
error_page 500 502 503 504/50x.html;
location = /50x.html {
root html;
}
}
}
前置机配置：
#usernobody;
worker_processes1;
events {
worker_connections1024;
}
http {
include mime.types;
default_typeapplication/octet-stream;
sendfile on;
keepalive_timeout65;
upstreamlinkrmb.com {
server127.0.0.1:8083;
server127.0.0.1:8082;
}
server {
listen 80;
server_namelocalhost;
location / {
proxy_pass http://linkrmb.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;
}
error_page 500 502 503 504/50x.html;
location = /50x.html {
root html;
}
}
}
前置机的代理配置主要点：
1.设置upstream
2.设置proxy_pass
默认的转发策略为轮询
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