基于proxy_balancer的Apache负载平衡

Question

我在配置Apache2.4使用它的proxy_balancer模块时遇到了困难。我的用例相当直接。请求正在到达apache节点，这个节点应该是负载平衡的集群。这是我的config

<VirtualHost *:80>

    ProxyRequests off

    ServerName localhost

    <Proxy balancer://geocode>

            BalancerMember "http://192.168.2.11:8080/ors/status"
            BalancerMember "http://192.168.2.35:8080/ors/status"

            Require all granted

            ProxySet lbmethod=byrequests

    </Proxy>

    <Location /balancer-manager>

            SetHandler balancer-manager

            Require all granted

    </Location>

    ProxyPass /balancer-manager !
    ProxyPass "/geocodelb" "balancer://geocode"
    ProxyPass "/geocode" "http://192.168.2.35:8080/ors/status"

</VirtualHost>

当导航到localhost:80/geocodelb时，我会收到404 Not Found

129.206.205.50 - - [01/Oct/2017:19:39:55 +0000] "GET /geocodelb 
HTTP/1.1" 404 164 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; 
rv:56.0) Gecko/20100101 Firefox/56.0"

但是localhost:80/geocode的工作原理是：

129.206.205.50 - - [01/Oct/2017:19:40:07 +0000] "GET /geocode HTTP/1.1" 
200 757 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:56.0) 
Gecko/20100101 Firefox/56.0"

( ../status指向tomcat实例并返回一个json对象)

如果我将BalancerMembers的url替换为一些任意的东西--比如google.com --它就能工作。

我也可以联系localhost:80/balancer-manager的平衡器经理并获得正确的信息.如果我没有弄错的话，那就是告诉我一切看起来都很好(见截图)。我在这里错过了什么？

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Answer 1

此操作不起作用的原因是，平衡器成员必须是服务器的url，没有路径。路径将被添加到ProxyPass指令中，如下面的balancer://orsbackend/ors/geocode。在这里，工作配置：

<VirtualHost *:80>

        ProxyRequests off

        ServerName localhost

        <Proxy balancer://orsbackend>
                BalancerMember "http://192.168.2.11:8080"
                BalancerMember "http://192.168.2.35:8080"
                ProxySet lbmethod=byrequests
        </Proxy>

        <Location /balancer-manager>
                SetHandler balancer-manager

                Require all granted
        </Location>

        ProxyPass /balancer-manager !

        ProxyPass "/geocode" "balancer://orsbackend/ors/geocode"

</VirtualHost>