apache [error] (OS 10061)解决方案
使用apache+mongrel_cluster发布redmine大，是apache的error.log文件过一段时间就汇报一个10061错误：ap_proxy_connect_backend disabling worker for (localhost)
(OS 10061)由于目标机器积极拒绝，无法连接。: proxy: HTTP: attempt to connect to 127.0.0.1:3003 (localhost) failed
ap_proxy_connect_backend disabling worker for (localhost)
(OS 10061)由于目标机器积极拒绝，无法连接。: proxy: HTTP: attempt to connect to 127.0.0.1:3003 (localhost) failed
ap_proxy_connect_backend disabling worker for (localhost)
(OS 10061)由于目标机器积极拒绝，无法连接。: proxy: HTTP: attempt to connect to 127.0.0.1:3003 (localhost) failed
ap_proxy_connect_backend disabling worker for (localhost)
(OS 10061)由于目标机器积极拒绝，无法连接。: proxy: HTTP: attempt to connect to 127.0.0.1:3003 (localhost) failed
ap_proxy_connect_backend disabling worker for (localhost)
(OS 10061)由于目标机器积极拒绝，无法连接。: proxy: HTTP: attempt to connect to 127.0.0.1:3003 (localhost) failed
ap_proxy_connect_backend disabling worker for (localhost)
(OS 10061)由于目标机器积极拒绝，无法连接。: proxy: HTTP: attempt to connect to 127.0.0.1:3003 (localhost) failed
比较郁闷了，查了一下资料，需要修改apache的配置文件，不采用loopback方式，具体修改如下：
第一步、修改mongrel_cluster.yml文件，将address修改为IP地址，如下图：
---
address: 192.168.3.239 //原先未127.0.0.1或localhost
log_file: D:/redmine-1.1.3/log/mongrel.log
port: "3000"
cwd: D:/redmine-1.1.3
environment: production
pid_file: D:/redmine-1.1.3/tmp/pids/mongrel.pid
servers: 4
第二步、修改apache的conf文件，将其中的balance
ProxyRequests Off
<Proxy balancer://myCluster>
BalancerMember http://192.168.3.239:3000 //原先未http://localhost:3000
BalancerMember http://192.168.3.239:3001 //原先未http://localhost:3001
BalancerMember http://192.168.3.239:3002 //原先未http://localhost:3002
BalancerMember http://192.168.3.239:3003 //原先未http://localhost:3003
</Proxy>
SetEnvIfNoCase Request_URI "BitTorrent" BT
<VirtualHost *:80>
ServerName localhost
DocumentRoot "d:/redmine-1.1.3/public/"
ProxyPass /images !
ProxyPass /javascripts !
ProxyPass /stylesheets !
ProxyPass /server-status !
ProxyPass / balancer://myCluster/
ProxyPreserveHost on
</VirtualHost>
第三步、重启mongrel_cluster
第四步、重启apache，上午10点修改，观察到下午2:50吗，问题一直没有出现，应该解决了
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