![]() If you are using cf CLI v7 or later, be aware that the -no-route flag no longer unbinds all existing routes associated with the app. Use the -no-route flag with the cf push command, or no-route: true in the app manifest, to suppress route creation. Most worker tasks do not serve external requests. It also describes how to scale the resources available to the worker app. Learn how to create and deploy an example Rails app that uses a worker library to defer a task that a separate app runs. Instance_index = JSON.parse(ENV) rescue nilĪdd the task to the manifest.yml file, referencing the idempotent command rake db:migrate with the command attribute: -Ĭommand: bundle exec rake cf:on_first_instance db:migrate & bundle exec rails s -p $PORT -e $RAILS_ENV In your Rakefile, add a Rake task to limit an idempotent command to the first instance of a deployed app: namespace :cf doĭesc "Only run on the first application instance" If a Rakefile does not exist, create one and add it to your app directory. To migrate a database schema using a Rake task: See the following example of migrating a database schema using a Rake task.įor more information about migrating database schemas, see the Migrate a Database Schema section of the Services Overview topic. Example: Invoking a Rake database migration task at App startup If you need to run a Rake task that must be performed in the Cloud Foundry environment, rather than locally before deploying or redeploying, you can configure the command that Cloud Foundry uses to start the app to invoke the Rake task.Īn app start command is configured in the app manifest file, manifest.yml, using the command attribute.įor more information about app manifests and supported attributes, see Deploying with App Manifests. compile = trueĬloud Foundry does not provide a mechanism for running a Rake task on a deployed app. ![]() You can force live compilation by adding the following line to application.rb. In this mode, assets are compiled when they are loaded for the first time. If the assets:precompile task fails, Cloud Foundry uses live compilation mode, the alternative to asset precompilation. To prevent re-initialization during pre-compilation, add the following line to application.rb: _on_precompile = false This could pose a problem if initialization requires service connections or environment checks that are unavailable during staging. The Rake precompile task re-initializes the Rails app. To precompile assets before deployment, run: rake assets:precompile Precompiling before deploying reduces the time it takes to stage an app. If you do not precompile assets before deploying your app, Cloud Foundry precompiles them when staging the app. For example: require './hello_world'Ĭloud Foundry supports the Rails asset pipeline. Rack config fileįor Rack and Sinatra, you must have a file. These files must be in your app before you push to Cloud Foundry. You must run Bundler to create a Gemfile and a Gemfile.lock. You can deploy Rack, Rails, or Sinatra apps with Cloud Foundry. User Account and Authentication (UAA) Server.Understanding Container-to-Container Networking.Service-Specific Instructions for Streaming Application Logs.Streaming Application Logs to Log Management Services.Configuring Play Framework Service Connections.Manage Application Requests with Route Services.Managing Service Instances with the CLI.Delivering Service Credentials to an Application.Integrating Service Instances with Applications.Packaging Dependencies for Offline Buildpacks.Environment Variables Defined by the Ruby Buildpack.Configure Service Connections for Node.js. ![]() Environment Variables Defined by the Node Buildpack.Pushing an Application with Multiple Buildpacks.Identifying your Cloud Foundry API Endpoint and Version. ![]() ![]()
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