nginx负载均衡配置

缺乏、安全感 2022-07-13 05:15 199阅读 0赞

## nginx负载均衡 ##

#### 一、nginx安装 ####

详见：[http://blog.csdn.net/zhengyong15984285623/article/details/53871752][http_blog.csdn.net_zhengyong15984285623_article_details_53871752]

#### 二、负载均衡机制 ####

least\_conn、ip\_hash;

在nginx中支持以下负载均衡机制：

1.  轮询 - 向应用服务器的请求以循环方式分布，
2.  最小连接 - 下一个请求分配给具有最少活动连接数的服务器，
3.  ip-hash - 散列函数用于确定应为下一个请求选择什么服务器（基于客户端的IP地址）。

#### 三、负载均衡示例 ####

轮询方式（默认）：

http {
        upstream myapp1 {
            server srv1.example.com  max_fails=3  fail_timeout=30s;
            server srv2.example.com;
            server srv3.example.com;
        }
    
        server {
            listen       80;
            server_name  localhost;
    
            location / {
                proxy_pass http://myapp1;
            }
        }
    }

最小连接：

upstream myapp1 {
        least_conn
        server srv1.example.com; 
        server srv2.example.com;
        server srv3.example.com;
    }

hash方式：

upstream myapp1 {
        ip_hash;
        server srv1.example.com;
        server srv2.example.com;
        server srv3.example.com;
    }

权重方式：

upstream myapp1 {
        server srv1.example.com weight=3;
        server srv2.example.com;
        server srv3.example.com;
    }

#### 四、参考文档 ####

参考文档地址：[http://nginx.org/en/docs/http/load\_balancing.html\#nginx\_load\_balancing\_configuration][http_nginx.org_en_docs_http_load_balancing.html_nginx_load_balancing_configuration]

[http_blog.csdn.net_zhengyong15984285623_article_details_53871752]: http://blog.csdn.net/zhengyong15984285623/article/details/53871752
[http_nginx.org_en_docs_http_load_balancing.html_nginx_load_balancing_configuration]: http://nginx.org/en/docs/http/load_balancing.html#nginx_load_balancing_configuration