apache2.2配置

编译要求支持的组件：

LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule alias_module modules/mod_alias.so
LoadModule rewrite_module modules/mod_rewrite.so

编辑主配置文件：conf/httpd.conf，再文件结尾加入：

ProxyRequests Off
ProxyPreserveHost on

打开虚拟主机配置的Include

#Include conf/extra/httpd-vhosts.conf

修改为：

Include conf/extra/httpd-vhosts.conf

编辑虚拟主机配置文件 vi conf/extra/http-vhost.conf

1.默认虚拟主机，使用ip或任意域名访问

# default host configuration for business and rm
<VirtualHost *:80>
  ErrorLog "logs/error_default.log"
  LogLevel warn
  CustomLog "logs/access_default.log" combinedio

  ProxyPass / balancer://cluster-busi/ stickysession=jsessionid nofailover=Off
  ProxyPassReverse / balancer://cluster-busi/
  # business ab+lb, Horizontal expansion of multiple business nodes
  <Proxy balancer://cluster-busi>
    BalancerMember  http://10.10.10.181:8013 loadfactor=5 retry=10
    BalancerMember  http://10.10.10.182:8013 loadfactor=5 retry=10
    ProxySet lbmethod=bybusyness
  </Proxy>
</VirtualHost>

2.域名访问

支持: http://www.domain.com 和http://username.domain.com

对于二级域名：http://username.domain.com先使用rewrite重写为：http://username.domain.com/username/，然后再使用proxy转发到下层的tomcat集群处理

# S3 configuration for dynamic domain name.
<VirtualHost *:80>
  ServerName www.oss.com
  ServerAlias *.oss.com

  ErrorLog "logs/error_s3.log"
  LogLevel warn
  CustomLog "logs/access_s3.log" combinedio

  RewriteEngine on
  RewriteLog "/opt/apache/logs/rewrite_s3.log"
  RewriteLogLevel 3
  RewriteCond %{HTTP_HOST} ^.+\.oss\.com$
  RewriteRule /(.*) /%{HTTP_HOST}/$1
  RewriteRule /(.+)\.oss\.com/(.*)$ /$1/$2 [PT]

  ProxyPass / balancer://cluster-s3/ nofailover=Off
  ProxyPassReverse / balancer://cluster-s3/
  <Proxy balancer://cluster-s3>
    BalancerMember  http://10.10.10.181:8013/oss loadfactor=5 retry=10
    BalancerMember  http://10.10.10.182:8013/oss loadfactor=5 retry=10
    ProxySet lbmethod=byrequests
  </Proxy>
</VirtualHost>

tomcat集群配置略。