No apache MPM package installed

安装完svn+apache2之后

/etc/init.d/apache2 start

提示：
No apache MPM package installed

需要安装一个apache的mpm模块:

sudo apt-get install apache2-mpm-*

可供安装的模块有四种：
  apache2-mpm-event: Conflicts: apache2-mpm
  apache2-mpm-itk: Conflicts: apache2-mpm
  apache2-mpm-prefork: Conflicts: apache2-mpm
  apache2-mpm-worker: Conflicts: apache2-mpm

就安装mpm-worker：

sudo apt-get install apache2-mpm-worker