software installation - Unable to install foreman in ubuntu 12.04

I am trying to install foreman in ubuntu 12.04, After adding apt source and executing foreman-installer command giving me the below error.

/usr/lib/ruby/vendor_ruby/kafo/puppet_module_parser.rb:21:in `initialize': uninitialized constant Puppet::Parser::Parser (NameError)

Couldn't find much in google....

How to solve it??

I followed this tutorial for installing puppet master and puppet agent

https://coderwall.com/p/w6oxug/puppet-installation-on-ubuntu-12-04lts

Everything was working fine until I uninstall ruby, rvm, gem, bundler etc and made a fresh install of rvm, ruby update to 2.3.0.

I updated ruby to 2.3.0, updated gem, bundlet... But If I type puppet -V, I am getting the below error

sudo service puppet start

• Starting puppet agent /usr/bin/puppet:3:in `require': no such file to load -- puppet/util/command_line (LoadError)
  from /usr/bin/puppet:3

Gem Environment:

RubyGems Environment:
  - RUBYGEMS VERSION: 2.5.1
  - RUBY VERSION: 2.3.0 (2015-12-25 patchlevel 0) [x86_64-linux]
  - INSTALLATION DIRECTORY: /usr/share/rvm/gems/ruby-2.3.0
  - USER INSTALLATION DIRECTORY: /home/user/.gem/ruby/2.3.0
  - RUBY EXECUTABLE: /usr/share/rvm/rubies/ruby-2.3.0/bin/ruby
  - EXECUTABLE DIRECTORY: /usr/share/rvm/gems/ruby-2.3.0/bin

  - SPEC CACHE DIRECTORY: /home/user/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /usr/share/rvm/gems/ruby-2.3.0
     - /usr/share/rvm/gems/ruby-2.3.0@global
  - GEM CONFIGURATION:
     - :update_sources => true

     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /usr/share/rvm/gems/ruby-2.3.0/bin
     - /usr/share/rvm/gems/ruby-2.3.0@global/bin
     - /usr/share/rvm/rubies/ruby-2.3.0/bin
     - /usr/local/sbin

     - /usr/local/bin
     - /usr/sbin
     - /usr/bin
     - /sbin
     - /bin
     - /usr/games
     - /usr/lib/jvm/jdk1.7/bin
     - /home/glassfish/bin
     - /usr/share/rvm/bin
     - /home/user/.rvm/bin

     - /home/user/.rvm/bin

UPDATE 2:

rvm -v
rvm 1.27.0 (latest) by Wayne E. Seguin , Michal Papis [https://rvm.io/]

ruby -v
ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]

rails -v
Rails 5.0.0.1

gem -v
2.6.6

which ruby

/home/user/.rvm/rubies/ruby-2.3.0/bin/ruby

which rails

/home/user/.rvm/gems/ruby-2.3.0/bin/rails

which gem

/home/user/.rvm/rubies/ruby-2.3.0/bin/gem

UPDATE 3:

foreman-installer

File /var/log/foreman-installer/foreman-installer.log not writeable,
won't log anything to file!
/home/user/.rvm/gems/ruby-2.3.0/gems/kafo-0.9.4/lib/kafo/puppet_module.rb:69:in
`parse': No Puppet module parser is installed and no cache of the file
/usr/share/foreman-installer/modules/foreman/manifests/init.pp is
available. Please check debug logs and install optional dependencies

for the parser. (Kafo::ParserError)

UPDATE 4:

Almost close to finishing installation:

I was using puppet 4 gem and that was causing UPDATE 3 errors. I downgraded puppet to version 3.7 and reinstalled highline and kafo gems

gem install puppet -v 3.7

gem install highline

gem install kafo

Then tried

foreman-installer

Preparing installation Done

Something went wrong! Check the log for ERROR-level output The full
log is at /var/log/foreman-installer/foreman-installer.log

In log, I can see these errors,

[ERROR 2016-08-30T08:13:17 main] Errors encountered during run:
[ERROR 2016-08-30T08:13:17 main]  Could not autoload puppet/parser/functions/add_progress: cannot load such file -- kafo/modules/kafo_configure/lib/kafo/puppet/report$
[ERROR 2016-08-30T08:13:17 main]  Could not autoload puppet/parser/functions/add_progress: cannot load such file -- kafo/modules/kafo_configure/lib/kafo/puppet/report$
[ERROR 2016-08-30T08:13:17 main]  Could not autoload puppet/parser/functions/add_progress: cannot load such file -- kafo/modules/kafo_configure/lib/kafo/puppet/report$

Could not autoload puppet/parser/functions/add_progress: cannot load such file -- kafo/modules/kafo_configure/lib/kafo/puppet/report_wrapper

Current System Config

rails -v
Rails 4.2.2

ruby -v
ruby 2.0.0p648 (2015-12-16 revision 53162) [x86_64-linux]

gem -v
2.4.8

bundler -v

Bundler version 1.12.5

puppet -V
3.7.0

The above errors are for foreman-installer 1.4 and 1.7,

when I try 1.3 installer,

'uninitialized constant Kafo::KafoConfigure (NameError) '

UPDATE 5:
I can conclude one thing now....

It's all about finding the 
right puppet version, 
right kafo version, 
right foreman-installer, 

right ruby version and 
right gem version for ubuntu 12.04

IF anyone succeeded in installing foreman-installer 1.4 in ubuntu 12.04, please give me the version no for all above mentioned 

As I mentioned in my original question, In Ubuntu 12.04, Its all about meeting the right configuration for forman-installer, ruby, puppet, kafo, kafo_parsers, rails and gem.

This is the configuration that finally worked for me.

• foreman-installer 1.7


• ruby -v 2.1.1


• rails -v 4.2.2


• puppet -V 3.8.7


• kafo -v 0.9.4


• kafo_parsers -v 0.1.2


• gem -v 2.6.6

When you are changing ruby version, make sure to update gems, install puppet gem and other required gems ( highline ) again

gem update --system
gem install highline
gem install puppet -v 3.8.7

Also, make sure you have the following foreman stuff updated. If you already have foreman old installer, You have to remove it first

sudo apt-get remove foreman-installer

Run this command "sudo nano /etc/apt/sources.list.d/foreman.list" and update the file with this entry deb http://deb.theforeman.org/ precise 1.7
then run the below commands,

sudo apt-get update
sudo apt-get install foreman-installer
foreman-installer

This is the final configuration which finally worked for me.
Now I am struggling to change foreman port :)