Capistrano killing assets:precompile

Question

I\'m trying to deploy my application and I keep getting

*** [err :: xxx.xxx.xx.xxx] bash: line 1:  9953 Killed                  bundle exec rake RAILS_ENV=produc         


        

Answer 1

So I think our problem was that bootstrap-sass was part of the asset precompilation. So it was blowing up all the css, and then compiling it all down. When this is combined with lots of sass/css, the process uses tons of memory, and the OS kills it. After much research, I came across a pretty decent solution. Compile locally, compress it, upload it, decompress it on the server, symlink it on the server, and then delete all the extra files that were created (local assets/compressed files).

Here's the script

namespace :deploy do
  namespace :assets do

    task :precompile, :roles => :web do
      from = source.next_revision(current_revision)
      if capture("cd #{latest_release} && #{source.local.log(from)} vendor/assets/ lib/assets/ app/assets/ | wc -l").to_i > 0
        run_locally("RAILS_ENV=#{rails_env} rake assets:clean && RAILS_ENV=#{rails_env} rake assets:precompile")
        run_locally "cd public && tar -jcf assets.tar.bz2 assets"
        top.upload "public/assets.tar.bz2", "#{shared_path}", :via => :scp
        run "cd #{shared_path} && tar -jxf assets.tar.bz2 && rm assets.tar.bz2"
        run_locally "rm public/assets.tar.bz2"
        run_locally("rake assets:clean")
      else
        logger.info "Skipping asset precompilation because there were no asset changes"
      end
    end

    task :symlink, roles: :web do
      run ("rm -rf #{latest_release}/public/assets &&
            mkdir -p #{latest_release}/public &&
            mkdir -p #{shared_path}/assets &&
            ln -s #{shared_path}/assets #{latest_release}/public/assets")
    end
  end

  # other stuff...

end

Here's where I found the script. It provides a better explanation

Edit:

There was an issue with newer rails deployments. I'm not sure the exact version, but it seemed to affect rails 4. The assets need to specify what environment they are being compiled for, otherwise the production/staging environments won't find them.