Capistrano 由于资产而部署缓慢 - .sprockets-manifest*

Question

在部署我们的 API（根本不使用资产）时，它在这一行挂了大约 5 分钟：

DEBUG [985661f8]    cannot access /var/www/api.staging/releases/20160208111413/public/assets/.sprockets-manifest*
DEBUG [985661f8]    : No such file or directory

我们已经在 config/application.rb 中禁用了资产：

config.assets.enabled = false

还需要做什么？我们正在使用这些版本：

• capistrano (3.4.0)
• capistrano 捆绑器 (1.1.4)
• capistrano-rails (1.1.3)
• capistrano-rails-collection (0.0.3)

Capistrano 日志：

INFO [42c93c96] Running /usr/local/rvm/bin/rvm 2.1.0@appyapi.staging do bundle exec rake assets:precompile as deploy@139.162.4.97
DEBUG [42c93c96] Command: cd /var/www/appyapi.staging/releases/20160223041856 && ( RAILS_ENV=staging /usr/local/rvm/bin/rvm 2.1.0@appyapi.staging do bundle exec rake assets:precompile )
INFO [42c93c96] Finished in 279.004 seconds with exit status 0 (successful).
DEBUG [f2410fde] Running /usr/bin/env if test ! -d /var/www/appyapi.staging/releases/20160223041856; then echo "Directory does not exist '/var/www/appyapi.staging/releases/20160223041856'" 1>&2; false; fi as deploy@139.162.4.97
DEBUG [f2410fde] Command: if test ! -d /var/www/appyapi.staging/releases/20160223041856; then echo "Directory does not exist '/var/www/appyapi.staging/releases/20160223041856'" 1>&2; false; fi
DEBUG [f2410fde] Finished in 0.081 seconds with exit status 0 (successful).
INFO [fd9b639a] Running /usr/bin/env mkdir -p /var/www/appyapi.staging/releases/20160223041856/assets_manifest_backup as deploy@139.162.4.97
DEBUG [fd9b639a] Command: cd /var/www/appyapi.staging/releases/20160223041856 && /usr/bin/env mkdir -p /var/www/appyapi.staging/releases/20160223041856/assets_manifest_backup
INFO [fd9b639a] Finished in 0.078 seconds with exit status 0 (successful).
DEBUG [462a5734] Running /usr/bin/env ls /var/www/appyapi.staging/releases/20160223041856/public/assets/.sprockets-manifest* as deploy@139.162.4.97
DEBUG [462a5734] Command: cd /var/www/appyapi.staging/releases/20160223041856 && /usr/bin/env ls /var/www/appyapi.staging/releases/20160223041856/public/assets/.sprockets-manifest*
DEBUG [462a5734]    ls: cannot access /var/www/appyapi.staging/releases/20160223041856/public/assets/.sprockets-manifest*
DEBUG [462a5734]    : No such file or directory
DEBUG [462a5734] Finished in 0.079 seconds with exit status 2 (failed).

Answer 1

好的，首先重要的是要知道“没有这样的文件或目录”错误是良性的。 Capistrano 执行某些命令作为测试，并根据结果采用不同的代码路径，其中一些测试导致失败是完全正常的。除非 Capistrano 引发异常，否则您可以放心地忽略这些“错误”。

其次，rake assets:precompile 似乎正在运行，即使您没有使用资产管道，因此也没有使用它。如果您没有任何资产，我很惊讶这一步可能需要这么长时间，但让我们再讨论一下吧。

快速解决方案是不包括 capistrano-rails 插件的资产管道步骤。正如README 中所述，您可以通过仅包含您需要的步骤来完成此操作。

所以：

# Put these in your Capfile
require "capistrano/bundler"
require "capistrano/rails/migrations"

# REMOVE these lines so that asset pipeline steps are excluded
# require "capistrano/rails"
# require "capistrano/rails/assets"