Ubuntu Apache加載proxy模塊

Apache配置一個反向代理
reload配置後顯示報錯，配置文件中代理模塊未configure。
沒法識別參數：
ProxyPass
ProxyPa***everse

查看/var/log/apache/error.log

日誌警告：
[warn] proxy: No protocol handler was valid for the URL /. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.

處理方法：
a2enmod proxy proxy_ajp proxy_balancer proxy_connect proxy_ftp proxy_http