rake db:setup 显示 rake aborted: KeyError: key not found: “URL_HOST” error

Question

我有轨道应用程序 ubuntu 18.04。 bundle install 运行成功但是当我运行 rake db:setup 时它显示

rake 中止：KeyError：找不到密钥。 "URL_HOST" /var/www/myapp/code/config/environments/production:rb:71:in fetch' /var/www/myapp/code/config/environments/production.rb:71:in block in ' /home /myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/railtie.rb:210:in instance_eval' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/railtie.rb:210:in configure' /var/www/myapp/code/config/environments/production.rb:3:in <top (required)>' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in需要'/home/myappuser/.rvm/gems/ruby-2.5。 0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in block in require' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:240:in load_dependency' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in require' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/engine.rb:598:in bloc k（2 个级别）在“/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/engine.rb:597:in each' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/engine.rb:597:in block in ' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/ railties-4.2.11.1/lib/rails/initializable.rb:30:in instance_exec' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:30:in run' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:55:in block in run_initializers' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:44:in each' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/ railties-4.2.11.1/lib/rails/initializable.rb:44:in tsort_each_child' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/initializable.rb:54:in run_initializers' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/application.rb:352:in initialize.' /var/www/myapp/code/config/environment:rb:5:in initialize.' /var/www/myapp/code/config/environment:rb:5:in ' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb :274:in require' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in要求'/home/myappuser/ .rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:240:in load_dependency' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/activesupport-4.2.11.1/lib/active_support/dependencies.rb:274:in要求'/home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/application.rb ：328：在require_environment.' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/application:rb:457:in require_environment.' /home/myappuser/.rvm/gems/ruby-2.5.0/gems/railties-4.2.11.1/lib/rails/application:rb:457:in block in run_tasks_blocks' /home/myappuser/.rvm/gems/ruby -2.5.0/gems/rake-13.0.0/exe/rake:27:in <top (required)>' /home/myappuser/.rvm/gems/ruby-2.5.0/bin/ruby_executable_hooks:24:in eval' /home/myappuser/.rvm/gems/ruby-2.5.0/bin/ruby_executable_hooks:24:in `' 任务：TOP => db:setup => db:schema:load_if_ruby => environment（查看完整跟踪使用 --trace 运行任务）

需要帮忙

Answer 1

似乎缺少 URL_HOST 的一些配置设置。