* 1运行Nginx的Web服务器
* 2个运行独角兽的应用服务器
* 1 db服务器运行 postgresql
我的服务器配置了Puppet,我正在用cAPIstrano推送应用程序.
我的Capfile
load 'deploy'# Uncomment if you are using Rails' asset pipelineload 'deploy/assets'load 'config/deploy' # remove this line to skip loading any of the default tasks
deploy.rb文件非常简单
# Execute "bundle install" after deploy,but only when really neededrequire "bundler/cAPIstrano"# name of the application in scm (GIT)set :application,"devops-test-app"set :repository,"https://github.com/geoffroymontel/devops-test-app.git"set :scm,:gitset :deploy_to,"/var/www/#{application}"# server there the web server is running (Nginx)role :web,"172.16.0.2"# server there the db is running# This is where Rails migrations will runrole :db,"172.16.0.3",:primary => true# servers there the app servers are running (unicorn)role :app,"172.16.0.4","172.16.0.5"set :rails_env,:production# user on the serverset :user,"deployer"set :use_sudo,falsenamespace :deploy do task :start,:roles => :app,:except => { :no_release => true } do run "service unicorn_#{application} start" end task :stop,:except => { :no_release => true } do run "service unicorn_#{application} stop" end task :restart,:except => { :no_release => true } do run "service unicorn_#{application} restart" end task :copy_in_database_yml do run "cp #{shared_path}/config/database.yml #{latest_release}/config/" end # Precompile assets # I have to precompile the assets on the app servers too,and I don't really kNow why... # namespace :assets do # task :precompile,:roles => [:web,:app],:except => { :no_release => true } do # run %Q{cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} #{asset_env} assets:precompile} # end # endendbefore "deploy:assets:precompile","deploy:copy_in_database_yml" $cap RolES="app" COMMAND="cat /var/www/devops-test-app/current/log/production.log" invoke * 2013-05-01 21:43:10 executing `invoke' * executing "cat /var/www/devops-test-app/current/log/production.log" servers: ["172.16.0.4","172.16.0.5"] [172.16.0.5] executing command ** [out :: 172.16.0.5] Connecting to database specifIEd by database.yml ** [out :: 172.16.0.5] Connecting to database specifIEd by database.yml ** [out :: 172.16.0.5] Started GET "/posts" for 172.16.0.2 at 2013-05-01 19:42:10 +0000 ** [out :: 172.16.0.5] Processing by postsController#index as HTML ** [out :: 172.16.0.5] Rendered posts/index.HTML.erb within layouts/application (25.7ms) ** [out :: 172.16.0.5] Completed 500 Internal Server Error in 122ms ** [out :: 172.16.0.5] ** [out :: 172.16.0.5] ActionVIEw::Template::Error (application.CSS isn't @R_310_3013@): ** [out :: 172.16.0.5] 2: <HTML> ** [out :: 172.16.0.5] 3: <head> ** [out :: 172.16.0.5] 4: <Title>DevopsTestApp</Title> ** [out :: 172.16.0.5] 5: <%= stylesheet_link_tag "application",:media => "all" %> ** [out :: 172.16.0.5] 6: <%= JavaScript_include_tag "application" %> ** [out :: 172.16.0.5] 7: <%= csrf_Meta_Tags %> ** [out :: 172.16.0.5] 8: </head> ** [out :: 172.16.0.5] app/vIEws/layouts/application.HTML.erb:5:in `_app_vIEws_layouts_application_HTML_erb__677166568443748084_17536100' ** [out :: 172.16.0.5] app/controllers/posts_controller.rb:7:in `index'
如果我取消注释deploy.rb中的注释行,一切都很好.
但为什么 ？？
我认为您只需要在Web服务器上编译资产,而不是在应用服务器上编译资产.
请帮我理解为什么:)
谢谢,最好的问候
若弗鲁瓦
解决方法 因为,除其他外,Rails会生成预编译资产的清单,包括文件名中文件的哈希值,然后在页面中包含资源时使用这些名称.当你说image_url(‘foo.jpg’)时,Rails最终会在源代码中生成foo-b48cf0140bea12734db05ebcdb012f1d265bed84.jpg.Rails需要知道要为这些资产使用的编译名称,因此它必须具有清单,因此预编译需要在应用服务器上完成.
看一下public / assets / manifest.yml – 这是Rails需要的文件,以便正确地提供预编译资产.
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