Ubuntu : 12.04 LTS
Ruby : 1.9.3
Passenger : 4.0.45
在安裝完 apache 2.2 後，不要對 apache 設定檔進行任何修改，在安裝 Passenger 實會修改 Apache 核心及設定檔，若有自己的設定檔，請自行備份，確認不要被新的設定檔覆蓋了
$ gem install passenger
$ passenger-install-apache2-module
安裝過程會檢查所需要的套件，如果發生錯誤，請依照 Passenger 的指示，安裝其需要的套件
Checking for required software...
* Checking for C compiler...
Found: yes
Location: /usr/bin/cc
* Checking for C++ compiler...
Found: yes
Location: /usr/bin/c++
* Checking for Curl development headers with SSL support...
Found: no
Error: Cannot find the `curl-config` command.
* Checking for OpenSSL development headers...
Found: yes
Location: true
* Checking for Zlib development headers...
Found: yes
Location: true
* Checking for Apache 2...
Found: yes
Location of httpd: /usr/sbin/apache2
Apache version: 2.2.22
* Checking for Apache 2 development headers...
Found: no
* Checking for Rake (associated with /usr/local/rvm/gems/ruby-1.9.3-p547/wrappers/ruby)...
Found: yes
Location: /usr/local/rvm/gems/ruby-1.9.3-p547/wrappers/rake
* Checking for OpenSSL support for Ruby...
Found: yes
* Checking for RubyGems...
Found: yes
* Checking for Ruby development headers...
Found: yes
Location: /usr/local/rvm/rubies/ruby-1.9.3-p547/include/ruby-1.9.1/ruby.h
* Checking for rack...
Found: yes
* Checking for Apache Portable Runtime (APR) development headers...
Found: no
* Checking for Apache Portable Runtime Utility (APU) development headers...
Found: no
Some required software is not installed.
But don't worry, this installer will tell you how to install them.
Press Enter to continue, or Ctrl-C to abort.
--------------------------------------------
Installation instructions for required software
* To install Curl development headers with SSL support:
Please run apt-get install libcurl4-openssl-dev or libcurl4-gnutls-dev, whichever you prefer.
* To install Apache 2 development headers:
Please install it with apt-get install apache2-threaded-dev
* To install Apache Portable Runtime (APR) development headers:
Please install it with apt-get install libapr1-dev
* To install Apache Portable Runtime Utility (APU) development headers:
Please install it with apt-get install libaprutil1-dev
我這邊欠缺的套件為下列套件，所以需要再重新安裝
$ sudo apt-get install libcurl4-openssl-dev apache2-threaded-dev libapr1-dev libaprutil1-dev
重新安裝完套件後，再次執行passenger-install-apache2-module安裝 Apache Passenger 套件即可
安裝過程會需要編譯 apache 套件，所以需要一點時間
這𥚃要特別注意，因為passenger會一直更新版本，以下的設定千萬不要直接拿去貼上，否則會出現錯誤。請直接複製在apache-passenger後在螢幕上顯示的文字。
LoadModule passenger_module /usr/local/rvm/gems/ruby-1.9.3-p547/gems/passenger-4.0.45/buildout/apache2/mod_passenger.so
<IfModule mod_passenger.c>
PassengerRoot /usr/local/rvm/gems/ruby-1.9.3-p547/gems/passenger-4.0.45
PassengerDefaultRuby /usr/local/rvm/gems/ruby-1.9.3-p547/wrappers/ruby
</IfModule>
建立新的設定檔passenger.conf
$ sudo vim /etc/apache2/conf.d/passenger.conf
貼上上面 Passenger 產生的設定檔
LoadModule passenger_module /usr/local/rvm/gems/ruby-1.9.3-p547/gems/passenger-4.0.45/buildout/apache2/mod_passenger.so
<IfModule mod_passenger.c>
PassengerRoot /usr/local/rvm/gems/ruby-1.9.3-p547/gems/passenger-4.0.45
PassengerDefaultRuby /usr/local/rvm/gems/ruby-1.9.3-p547/wrappers/ruby
</IfModule>
接下來會安裝 Redmine 當作測試程式，所以以下以redmine做設定範例
建立虛擬主機設定檔redmine
sudo vim /etc/apache2/sites-available/redmine
虛擬主機設定
<VirtualHost *:80>
ServerName dev.redmine
# !!! Be sure to point DocumentRoot to 'public'!
DocumentRoot /usr/share/redmine/public
<Directory /usr/share/redmine/public>
# This relaxes Apache security settings.
AllowOverride all
# MultiViews must be turned off.
Options -MultiViews
# Uncomment this if you're on Apache >= 2.4:
#Require all granted
</Directory>
</VirtualHost>
$ sudo a2ensite redmine
Enabling site redmine.
To activate the new configuration, you need to run:
service apache2 reload
$ sudo service apache2 reload