How to build task 'gems:install'

Question

I am deploying my rails app to a linux server and i have some of the rake tasks missing inlcuding rake gems:install and rake db

I am running rails 2.3.4 from GEM.

Why is this?

How do I fix this? can I update somehow?

---

they are missing from rake -T list

rake apache2                   # Build Apache 2 module
rake clean                     # Remove compiled files
rake clobber                   # Remove all generated files
rake default                   # Build everything
rake doc                       # Generate all documentation
rake doxygen                   # Generate Doxygen C++ API documentation if ...
rake doxygen:clobber           # Remove generated Doxygen C++ API documenta...
rake doxygen:force             # Force generation of Doxygen C++ API docume...
rake fakeroot                  # Create a fakeroot, useful for building nat...
rake nginx                     # Build Nginx helper server
rake package                   # Build all the packages
rake package:clean             # Remove package products
rake package:debian            # Create a Debian package
rake package:force             # Force a rebuild of the package files
rake package:gem               # Build the gem file passenger-2.2.4.gem
rake rdoc                      # Build the rdoc HTML Files
rake rdoc:clobber              # Remove rdoc products
rake rdoc:force                # Force a rebuild of the RDOC files
rake sloccount                 # Run 'sloccount' to see how much code Passe...
rake test                      # Run all unit tests and integration tests
rake test:cxx                  # Run unit tests for the Apache 2 and Nginx ...
rake test:integration          # Run all integration tests
rake test:integration:apache2  # Run Apache 2 integration tests
rake test:integration:nginx    # Run Nginx integration tests
rake test:oxt                  # Run unit tests for the OXT library
rake test:rcov                 # Run coverage tests for the Ruby libraries
rake test:restart              # Run the 'restart' integration test infinit...
rake test:ruby                 # Run unit tests for the Ruby libraries

my rake file contains this:

# Add your own tasks in files placed in lib/tasks ending in .rake,
# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.

require(File.join(File.dirname(__FILE__), 'config', 'boot'))

require 'rake'
require 'rake/testtask'
require 'rake/rdoctask'

require 'tasks/rails'

How do I add the gems and db rake tasks? and why are they missing?

Solution

Check your Capfile, if you are in fact running the gems:install from Capistrano. Apparently, the way to do this is to ensure you're in the right directory internally when running Capistrano.

namespace :gems do
  desc "Install gems"
  task :install, :roles => :app do
    run "cd #{current_path} && #{sudo} rake RAILS_ENV=production gems:install"
  end
end

You could also always specify the Rakefile to be sure using the -f [FILE] option in front of the rake command.