apacheの設定

 apt-get install libapache-mod-ruby

     # Mod_ruby use:
     #
     <IfModule mod_ruby.c>
         RubyRequire apache/ruby-run
         # /ruby use ruby script
         <Location /ruby>
             SetHandler ruby-object
             RubyHandler Apache::RubyRun.instance
         </Location>
         # *.rbx is run Ruby Script
         <Files *.rbx>
             SetHandler ruby-object
             RubyHandler Apache::RubyRun.instance
         </Files>
         RubyRequire apache/eruby-run
         # /eruby use eRuby file
         <Location /eruby>
             SetHandler ruby-object
             RubyHandler Apache::ERubyRun.instance
         </Location>
         # *.rhtml is eruby file
         <Files *.rhtml>
             SetHandler ruby-object
             RubyHandler Apache::ERubyRun.instance
         </Files>
     </IfModule>

もしくは

    # Addtype for Ruby
    #AddType application/x-httpd-eruby .rhtml
    #Action application/x-httpd-eruby /cgi-bin/eruby
    LoadModule ruby_module /usr/lib/apache/1.3/mod_ruby.so
    <IfModule mod_ruby.c>
        RubyRequire apache/ruby-run
        RubyRequire apache/eruby-run
        <Files *.rbx>
            SetHandler ruby-object
            RubyHandler Apache::RubyRun.instance
        </Files>
        <Files *.rhtml>
            SetHandler ruby-object
            RubyHandler Apache::ERubyRun.instance
        </Files>
    </IfModule>

safeレベルを0にするときの設定

 <IfModule mod_ruby.c>
   RubyRequire apache/ruby-run
   RubyRequire cgi
   RubySetEnv LANG "ja_JP.eucJP"
   RubySafeLevel 0
   RubyKanjiCode euc
   <Location /ruby>
   SetHandler ruby-object
   RubyHandler Apache::RubyRun.instance
   </Location>
   <Files *.rbx>
   SetHandler ruby-object
   RubyHandler Apache::RubyRun.instance
   RubySafeLevel 0
   </Files>
   RubyRequire apache/eruby-run
   <Location /eruby>
   SetHandler ruby-object
   RubyHandler Apache::ERubyRun.instance
   </Location>
   <Files *.rhtml>
   SetHandler ruby-object
   RubyHandler Apache::ERubyRun.instance
   RubySafeLevel 0
   </Files>
 </IfModule>