deploy.rb

  namespace :deploy do
  
    # Restart passenger on deploy
    desc "Restarting mod_rails with restart.txt"
    task :restart, :roles => :app, :except => { :no_release => true } do
      run "touch #{current_path}/tmp/restart.txt"
      solr.server.restart
    end

  end

solr.rb

# lib/recipes/solr.rb 

require 'yaml'

  
namespace :solr do
  namespace :index do
    desc <<-DESC
    An after_update_code task to symlink release/index to shared/index \
    useful for maintaining a constant SOLR index between deployments
    DESC
    task :symlink, :role => :app do
      solr.index.create
      run <<-CMD
        rm -rf #{release_path}/index &&
        ln -nfs #{shared_path}/index #{release_path}/index
      CMD
    end

    desc "Creates the shared/index directory for persistent SOLR indexes"
    task :create, :role => :app do
      run "if [ ! -d #{shared_path}/index ]; then mkdir -p #{shared_path}/index ; fi"
    end
    
    desc "Removes the contents of the shared/index directory"
    task :purge, :role => :app do
      run "if [ -d #{shared_path}/index ]; then rm -rf #{shared_path}/index/* ; fi"
    end
  end

  namespace :server do

    desc "Start SOLR server"
    task :start, :role => :app do
      run "cd #{current_path} && nohup rake solr:start RAILS_ENV=#{rails_env} > log/solr.log 2> log/solr.err.log"
    end

    desc "Stop ferret server"
    task :stop, :role => :app do
      run "cd #{current_path} && RAILS_ENV=#{rails_env} rake solr:stop"
    end

    desc "Reindex"
    task :reindex, :role => :app do
      run "cd #{current_path} && RAILS_ENV=#{rails_env} rake solr:reindex"
    end

    desc "Restart SOLR server"
    task :restart, :role => :app do
      solr.server.stop
      puts "Waiting a few seconds before starting SOLR..."
      sleep(7)
      solr.server.start
    end
  end
end