1. 安装ruby
wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.2-p180.tar.gz
tar xzvf ruby-1.9.2-p180.tar.gz
cd ruby-1.9.2-p180
./configure –prefix=/usr/local/ruby
#prefix选项可以自选
make&&make install
echo “export PATH=/usr/local/ruby/bin:\$PATH” >> /etc/profile
exit
#退出后，让ruby的环境变量其效果
2.安装gem ,用gem来安装ruby需要的各种组件，很强大
wget http://rubyforge.org/frs/download.php/74806/rubygems-1.8.0.tgz
tar xzvf rubygems-1.8.0.tgz
cd rubygems-1.8.0
ruby setup.rb
3.安装rails
gem install rails
gem install mysql2 -v 0.2.6
mysql2的新版本和rails结合有问题
4.安装apache的rails支持，用passenger
export APXS2=/usr/local/apache/bin/apxs
#此为可选项，如果你的apache是用rpm方式安装的，不用这行语句，如果你的apache安装在别处，后面的参数指向你安装的apache的apxs
passenger-install-apache2-module
根据上条命令的提示，将类似下面的语句放入到httpd.conf中
LoadModule passenger_module /usr/local/ruby/lib/ruby/gems/1.9.1/gems/passenger-3.0.7/ext/apache2/mod_passenger.so
PassengerRoot /usr/local/ruby/lib/ruby/gems/1.9.1/gems/passenger-3.0.7
PassengerRuby /usr/local/ruby/bin/ruby
配置虚拟目录，如下
<VirtualHost *:80>
ServerName shallwe.net
ServerAlias www.shallwe.net
DocumentRoot /usr/local/web/shallwe.net/public
RailsEnv development
<Directory /usr/local/web/shallwe.net/public>
Allow from all
Options -MultiViews
</Directory>
ErrorLog “logs/shallwe-error_log”
CustomLog “logs/shallwe-access_log” common
</VirtualHost>