Questions[gem](server)

I recently ran puppet module generate, and ended up with a whole lot of crap that looked unnecessary for a simple module. I mean, a lot of minimal modules amount to templating a configuration file or two and letting an open source Puppet module do the heavy lifting.

Puppet's documentation explained most of puppet module generate here:

https://docs.puppet.com/puppet/4.9/modules_fundamentals.html

However, I didn't see anything in there about the Gemfile.

Of what use is the Gemfile generated by puppet module generate?

$ puppet module generate nathan-myapp_consul
$ cd myapp_consul/
$ ls
Gemfile     README.md   Rakefile    examples    manifests   metadata.json   spec

Here are the contents of this file:

source ENV['GEM_SOURCE'] || 'https://rubygems.org'

puppetversion = ENV.key?('PUPPET_VERSION') ? ENV['PUPPET_VERSION'] : ['>= 3.3']
gem 'metadata-json-lint'
gem 'puppet', puppetversion
gem 'puppetlabs_spec_helper', '>= 1.0.0'
gem 'puppet-lint', '>= 1.0.0'
gem 'facter', '>= 1.7.0'
gem 'rspec-puppet'

# rspec must be v2 for ruby 1.8.7
if RUBY_VERSION >= '1.8.7' && RUBY_VERSION < '1.9'
  gem 'rspec', '~> 2.0'
  gem 'rake', '~> 10.0'
else
  # rubocop requires ruby >= 1.9
  gem 'rubocop'
end

Gemfile produced by puppet module generate, what is the point of you?

The ruby included with RedHat/CentOS-6 is of version 1.8.7, which is too old for many applications. Though simply updating it with a custom-built RPM is possible, my colleagues shy away from the idea and wish to use the rh-ruby22 packages available from the SCL-repo.

That installs ruby-2.2, which is great, but under /opt/rh/rh-ruby22. I now need to install several gems and would like to, obviously, use Puppet:

package {'example':
  ensure   => '0.25',
  provider => 'gem'
}

Unfortunately, the gem-provider invokes /usr/bin/gem instead of /opt/rh/rh-ruby22/root/usr/bin/gem that needs to be invoked. Is there any other way? Thanks!

I need to, from a bash script, check to see if certain Ruby gems are installed .

I thought I could do something like

if ! gem list <name>; then do_stuff; fi

but testing on the command line using echo $? shows that gem list <name> returns 0 regardless of if name is actually found.

Does this mean I have to use grep to filter the output of gem list, or is there a better way I can check to see if a gem is installed?

I have a pretty simply passenger installation on my production server. It seems that every night the passenger process quits due to inactivity.

When I hit the site in the morning, passenger starts up again and will give me a fairly straightforward error that the 'sinatra' rubygem could not be loaded. When I refresh the page, the problem goes away and passenger works fine for the rest of the day.

Sinatra is a readily available gem, and I load it in after I require 'rubygems.' Any idea why passenger would fail to launch on the first try?

in a system wide RVM .... heres my /etc/gemrc

---
gem:--no-ri --no-rdoc

heres the system gem env

 GEM PATHS:
     - /usr/lib/ruby/gems/1.9.1
     - /home/${USER}/.gem/ruby/1.9.1
    GEM CONFIGURATION:
         - :update_sources => true
         - :verbose => true
         - :benchmark => false
         - :backtrace => false
         - :bulk_threshold => 1000
         - "gem" => "--no-ri --no-rdoc"

and heres the one in rvm

GEM PATHS:
 - /usr/local/rvm/gems/ruby-1.9.2-p180
 - /usr/local/rvm/gems/ruby-1.9.2-p180@global
GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000

and rvm @global

    GEM PATHS:
     - /usr/local/rvm/gems/ruby-1.9.2-p180
     - /usr/local/rvm/gems/ruby-1.9.2-p180@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000

why is it not picking up the gemrc file?