使用Capistrano部署Rails 5.1/Webpacker应用程序

Question

我有一个Ubuntu服务器来部署我的Rails项目.在我的Ubuntu服务器中,我有RVM.

现在我想用Rails 5.1和webpacker部署新项目.为了部署这个项目,我在我的Ubuntu服务器上安装了NVM,npm和yarn.

在我的Rails 5.1/Webpacker项目中,我有以下gems用于capistrano部署:

的Gemfile

group :development do
  gem 'capistrano-rails'
  gem 'capistrano-rvm'
  gem 'capistrano-passenger'
  gem 'capistrano-nvm', require: false
  gem 'capistrano-yarn'
end

在deploy.rb中,我为capistrano nvm和capistrano yarn添加了一些配置.

deploy.rb

set :nvm_type, :user # or :system, depends on your nvm setup
set :nvm_node, 'v7.10.0'
set :nvm_map_bins, %w{node npm yarn}

set :yarn_target_path, -> { release_path.join('client') } #
set :yarn_flags, '--production --silent --no-progress'    # default
set :yarn_roles, :all                                     # default
set :yarn_env_variables, {}

我还在linked_dirs中添加了node_modules.

deploy.rb

set :linked_dirs, %w{log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system node_modules client/node_modules}

当我在资产中执行cap deploy时出现问题:预编译步骤.接下来,您有错误日志.

终端日志

00:10 deploy:assets:precompile
  01 /usr/local/rvm/bin/rvm 2.4.1@project do bundle exec rake assets:precompile
  01 Yarn executable was not detected in the system.
  01 Download Yarn at https://yarnpkg.com/en/docs/install
  01 /home/deploy/rails/241/project/shared/bundle/ruby/2.4.0/bin/rake: No such file or directory - node
  01 Node.js not installed. Please download and install Node.js https://nodejs.org/en/download/
(Backtrace restricted to imported tasks)
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing on host xxx.xxx.xxx.xxx: rake exit status: 1
rake stdout: Yarn executable was not detected in the system.
Download Yarn at https://yarnpkg.com/en/docs/install
/home/deploy/rails/241/project/shared/bundle/ruby/2.4.0/bin/rake: No such file or directory - node
Node.js not installed. Please download and install Node.js 
https://nodejs.org/en/download/
rake stderr: Nothing written

SSHKit::Command::Failed: rake exit status: 1
rake stdout: Yarn executable was not detected in the system.
Download Yarn at https://yarnpkg.com/en/docs/install
/home/deploy/rails/241/project/shared/bundle/ruby/2.4.0/bin/rake: No such file or directory - node
Node.js not installed. Please download and install Node.js 
https://nodejs.org/en/download/
rake stderr: Nothing written

Tasks: TOP => deploy:assets:precompile
(See full trace by running task with --trace)
The deploy has failed with an error: Exception while executing on host xxx.xxx.xxx.xxx: rake exit status: 1
rake stdout: Yarn executable was not detected in the system.
Download Yarn at https://yarnpkg.com/en/docs/install
/home/deploy/rails/241/project/shared/bundle/ruby/2.4.0/bin/rake: No such file or directory - node
Node.js not installed. Please download and install Node.js 
https://nodejs.org/en/download/
rake stderr: Nothing written



** DEPLOY FAILED
** Refer to log/capistrano.log for details. Here are the last 20 lines:


 DEBUG [016276ab]    * spring (2.0.1)

 DEBUG [016276ab]    * spring-watcher-listen (2.0.1)

 DEBUG [016276ab]    * web-console (3.5.0)

 DEBUG [016276ab]   Install missing gems with `bundle install`

 DEBUG [016276ab] Finished in 0.677 seconds with exit status 1 (failed).

  INFO [86e74b01] Running /usr/local/rvm/bin/rvm 2.4.1@project do bundle install --path /home/deploy/rails/241/project/shared/bundle --without development test --deployment --quiet on xxx.xxx.xxx.xxx

 DEBUG [86e74b01] Command: cd /home/deploy/rails/241/project/releases/20170511083021 && ( export NODE_VERSION="v7.10.0" ; /usr/local/rvm/bin/rvm 2.4.1@project do bundle install --path /home/deploy/rails/241/project/shared/bundle --without development test --deployment --quiet )

 DEBUG [86e74b01]   Warning, new version of rvm available '1.29.1', you are using older version '1.26.11'.

You can disable this warning with:    echo rvm_autoupdate_flag=0 >> ~/.rvmrc

You can enable  auto-update  with:    echo rvm_autoupdate_flag=2 >> ~/.rvmrc

  INFO [86e74b01] Finished in 3.209 seconds with exit status 0 (successful).

 DEBUG [4a428031] Running if test ! -d /home/deploy/rails/241/project/releases/20170511083021; then echo "Directory does not exist '/home/deploy/rails/241/project/releases/20170511083021'" 1>&2; false; fi on xxx.xxx.xxx.xxx

 DEBUG [4a428031] Command: if test ! -d /home/deploy/rails/241/project/releases/20170511083021; then echo "Directory does not exist '/home/deploy/rails/241/project/releases/20170511083021'" 1>&2; false; fi

 DEBUG [4a428031] Finished in 0.066 seconds with exit status 0 (successful).

  INFO [d225a8b5] Running /usr/local/rvm/bin/rvm 2.4.1@project do bundle exec rake assets:precompile on xxx.xxx.xxx.xxx

 DEBUG [d225a8b5] Command: cd /home/deploy/rails/241/project/releases/20170511083021 && ( export NODE_VERSION="v7.10.0" RAILS_ENV="production" ; /usr/local/rvm/bin/rvm 2.4.1@project do bundle exec rake assets:precompile )

 DEBUG [d225a8b5]   Yarn executable was not detected in the system.

Download Yarn at https://yarnpkg.com/en/docs/install

 DEBUG [d225a8b5]   /home/deploy/rails/241/project/shared/bundle/ruby/2.4.0/bin/rake: No such file or directory - node

 DEBUG [d225a8b5]   Node.js not installed. Please download and install Node.js https://nodejs.org/en/download/

提前致谢!

Answer 1

我更喜欢在本地编译资产,然后使用rsync复制到生产服务器:

# lib/capistrano/tasks/precompile.rake
namespace :assets do
  desc 'Precompile assets locally and then rsync to web servers'
  task :precompile do
    run_locally do
      with rails_env: stage_of_env do
        execute :bundle, 'exec rake assets:precompile'
      end
    end

    on roles(:web), in: :parallel do |server|
      run_locally do
        execute :rsync,
          "-a --delete ./public/packs/ #{fetch(:user)}@#{server.hostname}:#{shared_path}/public/packs/"
        execute :rsync,
          "-a --delete ./public/assets/ #{fetch(:user)}@#{server.hostname}:#{shared_path}/public/assets/"
      end
    end

    run_locally do
      execute :rm, '-rf public/assets'
      execute :rm, '-rf public/packs'
    end
  end
end

# config/deploy.rb
after 'deploy:updated', 'assets:precompile'

在您的Capfile中,您需要包含所有capistrano任务:

# Load custom tasks from `lib/capistrano/tasks` if you have any defined
Dir.glob('lib/capistrano/tasks/**/*.rake').each { |r| import r }

这消除了在生产服务器上安装节点和纱线的需要.

当然,您需要在本地安装节点和纱线

Answer 2

该错误几乎告诉您出了什么问题。在服务器上找不到 Yarn 或 Node。您的安装可能不正确。

按照此处的说明安装两者：

https://nodejs.org/en/download/package-manager/#debian-and-ubuntu-based-linux-distributions

和这里：

https://yarnpkg.com/lang/en/docs/install/#linux-tab

然后确保您可以致电：

yarn
node

在服务器上。如果没有，您可能需要将可执行文件的路径添加到 PATH 变量中