nginx请求发送到同一服务器

我正在使用

nginx

进行负载平衡。我已经尝试了

循环

和

最少连接

。我有三台服务器在端口

3001

、

3002

和

3003

上本地运行。但所有请求总是只发送到

3001

服务器。以下是我的配置：

worker_processes 1;

events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout  65;

    upstream my_http_servers {
        least_conn;
        server 127.0.0.1:3001;
        server 127.0.0.1:3002;
        server 127.0.0.1:3003;
    }
    server {
        listen       3000;
        server_name  localhost;

        location / {
            proxy_pass         http://my_http_servers;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}

---

我不确定为什么连接总是只连接到一台服务器。

将此添加到

/etc/hosts

时：

127.0.0.1       localhost
127.0.0.2       localhost1
127.0.0.3       localhost2
127.0.0.4       localhost3

此配置可用于：

worker_processes 1;

events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout  65;

    upstream my_http_servers {
        least_conn;
        server localhost1:3001;
        server localhost2:3002;
        server localhost3:3003;
    }
    server {
        listen       3000;
        server_name  localhost;

        location / {
            proxy_pass         http://my_http_servers;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
    server {
        listen       3001;
        server_name  localhost1;
        root html/3001;

        location / {
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
    server {
        listen       3002;
        server_name  localhost2;
        root html/3002;

        location / {
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
    server {
        listen       3003;
        server_name  localhost3;
        root html/3003;

        location / {
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}

我将3个服务器名添加到了一个不同的

根
，只是为了能够看到哪个服务器进行回复

opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3003
opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3001
opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3002
opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3003
opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3001
opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3002
opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3003
opensuse1:/var/log/nginx # curl -s -q  "http://localhost:3000/"  |grep 300
                192.168.168.251 3001
opensuse1:/var/log/nginx #

你只有一个。我认为您应该将其更改为3或更高版本，或者更改为“自动”（请参阅文档）。感谢我尝试了3和
auto
这两个选项，但它仍然只连接到1台服务器