集群wso2 api管理器网关

我正在尝试使用教程将wso2 api manager 1.10网关集群到3个主机：https://docs.wso2.com/display/CLUSTER44x/Clustering+the+Gateway，但有些步骤令人困惑 . 据我所知，wso2 api经理有两个交通工具

1.）servlet transport（tomcat）位于9443（https）和9763（http）用于服务碳相关服务

2.）位于端口8243（https）和8280（http）的PTT / NIO传输（axis2）用于处理对部署工件的请求 .

我从教程中不理解的是：

1.）为什么在网关管理器组件的集群配置（位于axis2配置中）中应该有端口映射？

<parameter name="properties">
    <property name="backendServerURL" value="https://${hostName}:${httpsPort}/services/"/>
    <property name="mgtConsoleURL" value="https://${hostName}:${httpsPort}/"/>
    <property name="subDomain" value="mgt"/>
    <property name="port.mapping.80" value="9763"/>
    <property name="port.mapping.443" value="9443"/>
</parameter>

是否已在负载均衡器（nginx）配置中定义

server {
    listen 443;
    server_name mgt.am.wso2.com;
    ssl on;
    ssl_certificate /etc/nginx/ssl/mgt.crt;
    ssl_certificate_key /etc/nginx/ssl/mgt.key;

    location / {
               proxy_set_header X-Forwarded-Host $host;
               proxy_set_header X-Forwarded-Server $host;
               proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
               proxy_set_header Host $http_host;
               proxy_read_timeout 5m;
               proxy_send_timeout 5m;
               proxy_pass https://xxx.xxx.xxx.xx3:9443/;
        }
    error_log  /var/log/nginx/mgt-error.log ;
    access_log  /var/log/nginx/mgt-access.log;
}

并在tomcat配置？

<Connector  protocol="org.apache.coyote.http11.Http11NioProtocol" port="9763" proxyPort="80" ... />
<Connector  protocol="org.apache.coyote.http11.Http11NioProtocol" port="9443" proxyPort="443"/>

2.）为什么网关工作者的负载均衡器配置使用servlet端口？不应该是PTT / NIO端口吗？ （因为网关工作程序用于处理对部署工件的请求）

upstream wso2.am.com {
        sticky cookie JSESSIONID;
        server xxx.xxx.xxx.xx4:9763;
        server xxx.xxx.xxx.xx5:9763;
}

server {
        listen 80;
        server_name am.wso2.com;
        location / {
               proxy_set_header X-Forwarded-Host $host;
               proxy_set_header X-Forwarded-Server $host;
               proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
               proxy_set_header Host $http_host;
               proxy_read_timeout 5m;
               proxy_send_timeout 5m;
               proxy_pass http://wso2.am.com;
        }
}

upstream ssl.wso2.am.com {
    sticky cookie JSESSIONID;
    server xxx.xxx.xxx.xx4:9443;
    server xxx.xxx.xxx.xx5:9443;
}

server {
listen 443;
    server_name am.wso2.com;
    ssl on;
    ssl_certificate /etc/nginx/ssl/wrk.crt;
    ssl_certificate_key /etc/nginx/ssl/wrk.key;
    location / {
               proxy_set_header X-Forwarded-Host $host;
               proxy_set_header X-Forwarded-Server $host;
               proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
               proxy_set_header Host $http_host;
               proxy_read_timeout 5m;
               proxy_send_timeout 5m;
               proxy_pass https://ssl.wso2.am.com;
        }
}