我尝试了几种使用Capistrano v3部署到我的服务器的方法,但是由于以下错误而失败。我尝试在本地进行预编译,但失败了。
DEBUG [4ec78ee3] Command: cd /var/www/html/webapp/releases/20140101221937 && bundle exec rake assets:precompile RAILS_ENV=production
DEBUG [4ec78ee3] /usr/local/bin/ruby /var/www/html/webapp/shared/bundle/ruby/1.9.1/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets
DEBUG [4ec78ee3] rake aborted!
DEBUG [4ec78ee3] undefined method `fetch' for false:FalseClass
我的部署文件如下所示;
SSHKit.config.command_map[:rake] = "bundle exec rake"
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 :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
这是详细的跟踪;
INFO [4ec78ee3] Running bundle exec rake assets:precompile RAILS_ENV=production on 208.68.39.56
DEBUG [4ec78ee3] Command: cd /var/www/html/webapp/releases/20140101221937 && bundle exec rake assets:precompile RAILS_ENV=production
DEBUG [4ec78ee3] /usr/local/bin/ruby /var/www/html/webapp/shared/bundle/ruby/1.9.1/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets
DEBUG [4ec78ee3] rake aborted!
DEBUG [4ec78ee3] undefined method `fetch' for false:FalseClass
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:35:in `resolve_string_connection'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:25:in `spec'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:130:in `establish_connection'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.13/lib/active_record/railtie.rb:82:in `block (2 levels) in <class:Railtie>'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:26:in `block in on_load'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:25:in `each'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:25:in `on_load'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.13/lib/active_record/railtie.rb:74:in `block in <class:Railtie>'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'
DEBUG [4ec78ee3] /var/www/html/webapp/releases/20140101221937/config/environment.rb:5:in `<top (required)>'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:103:in `require_environment!'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:297:in `block (2 levels) in initialize_tasks'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:93:in `block (2 levels) in <top (required)>'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:60:in `block (3 levels) in <top (required)>'
DEBUG [4ec78ee3] Tasks: TOP => environment
DEBUG [4ec78ee3] (See full trace by running task with --trace)
DEBUG [4ec78ee3] rake aborted!
DEBUG [4ec78ee3] Command failed with status (1): [/usr/local/bin/ruby /var/www/html/webapp/s...]
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:12:in `ruby_rake_task'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'
DEBUG [4ec78ee3] /var/www/html/webapp/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.13/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'
DEBUG [4ec78ee3] Tasks: TOP => assets:precompile
DEBUG [4ec78ee3] (See full trace by running task with --trace)
我跑了 cap production deploy:compile_assets
并得到了 帽流产了!
if test ! -d /var/www/html/webapp/current; then echo "Directory does not exist '/var/www/html/webapp/current'" 1>&2; false; fi stdout: Nothing written
if test ! -d /var/www/html/webapp/current; then echo "Directory does not exist '/var/www/html/webapp/current'" 1>&2; false; fi stderr: Nothing written
记住,它仍然是一个空文件。
这不是一个完整的答案,而是故障排除的第一步。
首先,转到服务器并运行Capistrano运行的完全相同的命令,以确保可以重现完全相同的错误。这使Capistrano脱颖而出,现在该错误仅与Rails及其配置有关。
这是引发错误的行:
该错误消息告诉我们这configurations
是错误的,但是代码期望它是某个响应的对象fetch
(可能是哈希)。问题在于其中的@configurations
实例变量ActiveRecord::Base::ConnectionSpecification::Resolver
被false
错误地设置。你知道为什么会这样吗?我将检查所有与数据库连接有关的配置文件,并确保它们看起来确定。
如果这样做没有帮助,则下一步是找出为什么将该变量设置为false
。好吧,如果我们在堆栈跟踪中低两行,我们可以看到如何创建和使用此Resolver对象:
该方法只是调用ActiveRecord::Base.configurations
并将其传递给Resolver对象。因此,现在的问题变成了如何ActiveRecord::Base.configurations
将其设置为false?
编辑1:
这是有关的文档和代码ActiveRecord::Base.configurations
:
https://github.com/rails/rails/blob/v3.2.13/activerecord/lib/active_record/base.rb#L341-369
听起来ActiveRecord::Base.configurations
应该来自您的database.yml文件。您应该转到服务器,仔细查看您的database.yml文件,看看它是否可能被读为false。您应该在此处发布该文件。
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我来说两句