[root@localhost ruby]# gem install passenger --pre

ERROR: Error installing passenger:

passenger requires fastthread (>= 1.0.1, runtime)

[root@localhost ruby]# gem install passenger --pre

ERROR: Error installing passenger:

passenger requires daemon_controller (>= 0.2.5, runtime)

[root@localhost ruby]# gem install passenger --pre

ERROR: Error installing passenger:

passenger requires file-tail (>= 0, runtime)

[root@localhost ruby]# passenger-install-apache2-module

Welcome to the Phusion Passenger Apache 2 module installer, v3.0.0.pre2.


This installer will guide you through the entire installation process. It

shouldn't take more than 3 minutes in total.


Here's what you can expect from the installation process:


1. The Apache 2 module will be installed for you.

2. You'll learn how to configure Apache.

3. You'll learn how to deploy a Ruby on Rails application.


Don't worry if anything goes wrong. This installer will advise you on how to

solve any problems.


Press Enter to continue, or Ctrl-C to abort.



--------------------------------------------


Checking for required software...


* GNU C++ compiler... found at /usr/bin/g++

* Curl development headers with SSL support... not found

* OpenSSL development headers... found

* Zlib development headers... found

* Ruby development headers... found

* OpenSSL support for Ruby... found

* RubyGems... found

* Rake... found at /usr/local/ruby/bin/rake

* rack... found

* Apache 2... not found

* Apache 2 development headers... not found

* Apache Portable Runtime (APR) development headers... not found

* Apache Portable Runtime Utility (APU) development headers... not found


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 yum install curl-devel as root.


* To install Apache 2:

Please run yum install httpd as root.


* To install Apache 2 development headers:

Please run yum install httpd-devel as root.


* To install Apache Portable Runtime (APR) development headers:

Please run yum install apr-devel as root.


* To install Apache Portable Runtime Utility (APU) development headers:

Please download it from http://httpd.apache.org/

(APR Utility is an integrated part of Apache.)


If the aforementioned instructions didn't solve your problem, then please take

a look at the Users Guide:


/usr/local/ruby/lib/ruby/gems/1.8/gems/passenger-3.0.0.pre2/doc/Users guide Apache.html