nginx 负载均衡

nginx配置:

worker_processes  1;

events {
  worker_connections  1024;
}

http {

  server {
    listen 8081;
    location / {
      root /data/xc1;
    }
  }

  server {
    listen 8082;
    location / {
      root /data/xc2;
    }
  }

  server {
    listen 8083;
    location / {
      root /data/xc3;
    }
  }

  upstream myproject {
    server 172.31.221.178:8081;
    server 172.31.221.178:8082;
    server 172.31.221.178:8083;
  }

  server {
    listen 80;
    location / {
      proxy_pass http://myproject;
    }
  }
}

• 默认为循环调度
• least_conn 最小连接
• ip_hash 会话选择特定的服务器
• weight 加权负载均衡

  upstream myproject {
    least_conn;
    server 172.31.221.178:8081;
    server 172.31.221.178:8082;
    server 172.31.221.178:8083;
  }

  upstream myproject {
    ip_hash;
    server 172.31.221.178:8081;
    server 172.31.221.178:8082;
    server 172.31.221.178:8083;
  }

  upstream myproject {
    server 172.31.221.178:8081 weight=3;
    server 172.31.221.178:8082;
    server 172.31.221.178:8083;
  }

重新载入配置文件:　

/usr/local/nginx/sbin/nginx -s reload            # 重新载入配置文件

访问:

http://loc168/