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Rails 4, Capistrano 3 crashes while executing the rake assets: precompile package and returns rake stdout: Nothing

Deployment with disabling Capistrano during rake assets: precompile:

/usr/local/rvm/bin/rvm ruby-2.0.0-p353 do bundle exec rake assets:precompile

Request Answer this error:

 INFO [b438501f] Running /usr/local/rvm/bin/rvm ruby-2.0.0-p353 do bundle exec rake assets:precompile on 123.123.123.123 cap aborted! rake stdout: Nothing written rake stderr: Nothing written /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/command.rb:94:in `exit_status=' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:142:in `block (4 levels) in _execute' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:551:in `call' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:551:in `do_request' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:561:in `channel_request' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:221:in `preprocess' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:205:in `process' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `block in loop' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:269:in `wait' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:164:in `block (2 levels) in _execute' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:514:in `call' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:514:in `do_open_confirmation' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:545:in `channel_open_confirmation' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:221:in `preprocess' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:205:in `process' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `block in loop' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:166:in `block in _execute' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `tap' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `_execute' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:66:in `execute' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/capistrano-rails-1.1.1/lib/capistrano/tasks/assets.rake:59:in `block (6 levels) in <top (required)>' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/abstract.rb:89:in `with' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/capistrano-rails-1.1.1/lib/capistrano/tasks/assets.rake:58:in `block (5 levels) in <top (required)>' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/abstract.rb:81:in `within' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/capistrano-rails-1.1.1/lib/capistrano/tasks/assets.rake:57:in `block (4 levels) in <top (required)>' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `instance_exec' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `run' /Users/osiris/.rvm/gems/ruby-2.0.0-p353/gems/sshkit-1.3.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute' Tasks: TOP => deploy:assets:precompile (See full trace by running task with --trace) The deploy has failed with an error: #<SSHKit::Command::Failed: rake stdout: Nothing written rake stderr: Nothing written >

Here is my debloy.rb

 # config valid only for Capistrano 3.1 lock '3.1.0' set :application, 'Myapp' set :repo_url, ' git@github.com :randomuser/myapp.git' set :deploy_to, '/var/www/myapp' set :rvm_ruby_version, 'ruby-2.0.0-p353' set :log_level, :info set :linked_files, %w{config/database.yml} set :keep_releases, 20 # SSHKit.config.output_verbosity = :debug SSHKit.config.output = $stdout SSHKit.config.output_verbosity = Logger::DEBUG SSHKit.config.command_map[:rake] = "bundle exec rake" SSHKit.config.command_map[:rails] = "bundle exec rails" set :normalize_asset_timestamps, %{public/images public/javascripts public/stylesheets} namespace :deploy do desc 'Restart application' task :restart do on roles(:app), in: :sequence, wait: 5 do # Your restart mechanism here, for example: execute :touch, release_path.join('tmp/restart.txt') end end after :publishing, :restart after :restart, :clear_cache do on roles(:web), in: :groups, limit: 3, wait: 10 do # Here we can do anything such as: within release_path do execute :rake, 'cache:clear' end end end after :finishing, "deploy:cleanup" end

You can find more detailed information about this problem in this Gist: https://gist.github.com/richardsondx/10092890 I noticed that the environment is not mentioned in the rake task, although I mentioned it in production.rb. This could help rewrite the command prefix with RAILS_ENV = production

I tried to overwrite the task:

 namespace :deploy do namespace :assets do task :precompile do on roles(fetch(:assets_roles)) do within release_path do with rails_env: fetch(:rails_env) do execute :rake, "assets:precompile RAILS_ENV=production" end end end end end end

But he did not rewrite it.

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1 answer

I was dealing with the same problem in my DigitalOcean VPN, and I had to create swap memory. My VPS killed the asset precompilation process.

Before creating swap memory, you can check if your server uses any swap memory using htop . My server was not ...

Try the following:

  • Create 1GB swap memory sudo dd if=/dev/zero of=/usr/mem.swap bs=1M count=512

  • Use the swap memory created in the first step sudo mkswap /usr/mem.swap sudo swapon /usr/mem.swap

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