Nginx反向代理和负载均衡

采用服务器80转发8080，即外部访问时访问80端口，nginx代理tomcat和转发内部的8080端口，tomat端口是8080.重点需要在 Nginx的配置文件中配置如下红色的地方。

#keepalive_timeout 0;
keepalive_timeout 65;

#gzip on;

upstream server_tomcat {
#server 10.131.156.168:8080 weight=20;
#server 10.131.156.168:9200 weight=20;
server localhost:8080 weight=20;
#server 10.131.156.169:8080 weight=80;
#server 10.131.156.170:8080 weight=100;
}

server {
listen 80;
#listen 443;
server_name server_tomcat;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_buffering off;
proxy_pass http://server_tomcat;
}