• 以下、rootで実行
  • rbenvインストール

    # cd /usr/local/
    
    # git clone https://github.com/sstephenson/rbenv.git
    Initialized empty Git repository in /usr/local/rbenv/.git/
    remote: Counting objects: 2057, done.                                                    
    remote: Total 2057 (delta 0), reused 0 (delta 0), pack-reused 2057                       
    Receiving objects: 100% (2057/2057), 344.17 KiB | 239 KiB/s, done.
    Resolving deltas: 100% (1272/1272), done.
    # mkdir rbenv/shims rbenv/versions
    # groupadd rbenv
    # chgrp -R rbenv rbenv
    # chmod -R g+rwxXs rbenv
    # git clone git://github.com/sstephenson/ruby-build.git ruby-build
    Initialized empty Git repository in /usr/local/ruby-build/.git/
    remote: Counting objects: 4548, done.                                                    
    remote: Compressing objects: 100% (12/12), done.                                         
    remote: Total 4548 (delta 6), reused 0 (delta 0), pack-reused 4536                       
    Receiving objects: 100% (4548/4548), 864.59 KiB | 683 KiB/s, done.
    Resolving deltas: 100% (2354/2354), done.
    # cd ruby-build
    # ./install.sh
    # vi /etc/profile.d/rbenv.sh
    
    export RBENV_ROOT="/usr/local/rbenv"
    export PATH="/usr/local/rbenv/bin:$PATH"
    eval "$(rbenv init -)"
    
    # source /etc/profile.d/rbenv.sh
    # which rbenv
    /usr/local/rbenv/bin/rbenv

  • インストール可能なrubyのバージョンを確認

    # rbenv install --list
    ...
      2.2.0
      2.2.1
      2.2.2
      2.3.0-dev
    ...

  • 2.2.2をインストール

    # rbenv install 2.2.2
    ...
    Installed ruby-2.2.2 to /usr/local/rbenv/versions/2.2.2
    
    # rbenv global 2.2.2
    # ruby -v
    ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]

  • RubyGemsの確認

    # gem -v
    2.4.5

  • bundlerをインストール

    # gem install bundler --no-rdoc --no-ri
    Fetching: bundler-1.9.9.gem (100%)
    Successfully installed bundler-1.9.9
    1 gem installed

• jenkinsユーザで確認
  • シェルのないユーザ（jenkins）でログイン

    # su - jenkins --shell=/bin/bash

  • rubyの確認

    -bash-4.1$ ruby -v
    ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]

  • ログオフ

    -bash-4.1$ exit
    logout

# rbenv install 2.2.2
Downloading ruby-2.2.2.tar.gz...
-> http://dqw8nmjcqpjn7.cloudfront.net/5ffc0f317e429e6b29d4a98ac521c3ce65481bfd22a8cf845fa02a7b113d9b44
Installing ruby-2.2.2...

BUILD FAILED (CentOS 6.6 using ruby-build 20150519)

Inspect or clean up the working tree at /tmp/ruby-build.20150528100419.2639
Results logged to /tmp/ruby-build.20150528100419.2639.log

Last 10 log lines:
                              rake 10.4.2
                              rdoc 4.2.0
skip installing bundle gems because of lacking zlib
installing rdoc:              /usr/local/rbenv/versions/2.2.2/share/ri/2.2.0/system
installing capi-docs:         /usr/local/rbenv/versions/2.2.2/share/doc/ruby
The Ruby openssl extension was not compiled. Missing the OpenSSL lib?
Configure options used:
  --prefix=/usr/local/rbenv/versions/2.2.2
  LDFLAGS=-L/usr/local/rbenv/versions/2.2.2/lib 
  CPPFLAGS=-I/usr/local/rbenv/versions/2.2.2/include 

openssl-develをインストールする

yum -y install openssl-devel