server {
  listen 82;
  server_name localhost;
  location / {
    proxy_pass http://192.168.138.101:8080; # 反向代理配置 将请求转发到指定服务
  }
}

upstream targetserver {  # upstream 可以定义一组服务器
  server 192.168.138.100:8080;
  server 192.168.138.100:8081;
}
server {
  listen 8080;
  server_name localhost;
  location / {
    proxy_pass http://targetserver;
  }
}