rvm1-ansible: A Dockerfile repository from tokyowizard

What is rvm1-ansible?

It is an Ansible role to install and manage ruby versions using rvm.

Why should you use rvm?

In production it's useful because compiling a new version of ruby can easily take upwards of 10 minutes. That's 10 minutes of your CPU being pegged at 100%.

rvm has pre-compiled binaries for a lot of operating systems. That means you can install ruby in about 1 minute, even on a slow micro instance.

This role even adds the ruby binaries to your system path when doing a system wide install. This allows you to access them as if they were installed without using a version manager while still benefiting from what rvm has to offer.

Installation

$ ansible-galaxy install rvm_io.ruby

Role variables

Below is a list of default values that you can configure:

---

# Install 1 or more versions of ruby
# The last ruby listed will be set as the default ruby
rvm1_rubies:
  - 'ruby-2.3.1'

# Install the bundler gem
rvm1_bundler_install: True

# Delete a specific version of ruby (ie. ruby-2.1.0)
rvm1_delete_ruby:

# Install path for rvm (defaults to single user)
# NOTE: If you are doing a ROOT BASED INSTALL then make sure you
#       set the install path to something like '/usr/local/rvm'
rvm1_install_path: '~/.rvm'

# Add or remove any install flags
# NOTE: If you are doing a ROOT BASED INSTALL then
#       make sure you REMOVE the --user-install flag below
rvm1_install_flags: '--auto-dotfiles  --user-install'

# Add additional ruby install flags
rvm1_ruby_install_flags:

# Set the owner for the rvm directory
# NOTE: If you are doing a ROOT BASED INSTALL then
#       make sure you set rvm1_user to 'root'
rvm1_user: 'ubuntu'

# URL for the latest installer script
rvm1_rvm_latest_installer: 'https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer'

# rvm version to use
rvm1_rvm_version: 'stable'

# Check and update rvm, disabling this will force rvm to never update
rvm1_rvm_check_for_updates: True

# GPG key verification, use an empty string if you want to skip this
# Note: Unless you know what you're doing, just keep it as is
#           Identity proof: https://keybase.io/mpapis
#           PGP message: https://rvm.io/mpapis.asc
rvm1_gpg_keys: '409B6B1796C275462A1703113804BB82D39DC0E3'

# The GPG key server
rvm1_gpg_key_server: 'hkp://keys.gnupg.net'

# autolib mode, see https://rvm.io/rvm/autolibs
rvm1_autolib_mode: 3

Example playbooks

---

- name: Configure servers with ruby support for single user
  hosts: all

  roles:
    - { role: rvm_io.ruby,
        tags: ruby,
        rvm1_rubies: ['ruby-2.3.1'],
        rvm1_user: 'ubuntu'
      }

If you need to pass a list of ruby versions, pass it in an array like so.

---
- name: Configure servers with ruby support system wide
  hosts: all
  roles:
    - { role: rvm_io.ruby,
        tags: ruby,
        become: yes,

        rvm1_rubies: ['ruby-2.2.5','ruby-2.3.1'],
        rvm1_install_flags: '--auto-dotfiles',     # Remove --user-install from defaults
        rvm1_install_path: /usr/local/rvm,         # Set to system location
        rvm1_user: root                            # Need root account to access system location
      }

rvm_rubies must be specified via ruby-x.x.x so that if you want ruby 2.2.5, you will need to pass in an array rvm_rubies: ['ruby-2.2.5']

System wide installation

The above example would setup ruby system wide. It's very important that you run the play as root because it will need to write to a system location specified by rvm1_install_path

To the same user as `ansible_user`

In this case, just overwrite rvm_install_path and by default is set the --user-install flag:

rvm1_install_flags: '--auto-dotfiles --user-install'
rvm1_install_path: '/home/{{ ansible_user }}/.rvm'

To a user that is not `ansible_user`

You will need root access here because you will be writing outside the ansible user's home directory. Other than that it's the same as above, except you will supply a different user account:

rvm1_install_flags: '--auto-dotfiles --user-install'
rvm1_install_path: '/home/someuser/.rvm'

A quick note about `rvm1_user`

In some cases you may want the rvm folder and its files to be owned by a specific user instead of root. Simply set rvm1_user: 'foo' and when ruby gets installed it will ensure that foo owns the rvm directory.

Upgrading and removing old versions of ruby

A common work flow for upgrading your ruby version would be:

Install the new version
Run your application role so that bundle install re-installs your gems
Delete the previous version of ruby

Leverage ansible's `--extra-vars`

Just add --extra-vars 'rvm1_delete_ruby=ruby-2.1.0' to the end of your play book command and that version will be removed.

Requirements

Tested on ubuntu 12.04 LTS but it should work on other versions that are similar.
Tested on RHEL6.5 and CentOS [6.5, 6.6, 6.7]

Ansible galaxy

You can find it on the official ansible galaxy if you want to rate it.

License

MIT

tokyowizard/rvm1-ansible