Overview A file upload initiated in an application written in Ruby, Node, or Python launched through Passenger will fail to upload. Thus far, the confirmed failure occurs in RefineryCMS with a generic undefined route message following upload. Cause It is a conflict between upload screening and Passenger, but the underlying cause is not clearly understood. Upload…
Overview .htaccess files are used to control behaviors of applications by overriding global server configuration. Any Passenger-based application, which includes Node, Python, and Ruby, will stop processing rules beyond the document root, often noted by convention as public/. Cause Passenger is managed by a separate facility that immediately takes control of the request once Apache detects that the…
Overview Applications launched through Passenger, which includes Node, Python, Ruby, and Meteor, may receive optimizations to JavaScript, CSS, and image assets which are not explicitly defined within application logic. Take for example a small external JavaScript asset that may become inlined after the first request: <head> <script src=”//test.js””></script> <!– rest of head –> becomes: <head> <script>//<![CDATA[ console.log(“Hello 212a.”);…
Overview Flask is a Python microframework for building web sites with minimal overhead. Think of it as a lightweight version of Django with fewer features, but better speed. Flask is supported on v6+ platforms using Passenger. Quickstart All steps are done from the terminal. While it may be possible to deploy a Flask application without using terminal,…
Overview When trying to redeploy a Passenger process, Passenger may refuse deployment, because you have maxed out on available process slots. Terminating the process will free a connection slot and permit Passenger to launch a new process. Symptoms Upon launching an application after restarting, the app will hang and log an error similar to: […
Overview Applications launched by Passenger on v6+ platforms may emit output on stdout or stderr channels. Any output emitted is logged to an aggregate log called passenger.log in /var/log. Important: since these logs are combined among all accounts using Passenger, never output anything confidential to stdout or stderr when launched using Passenger. Once an application is up and…
Overview All Passenger applications require a compatible filesystem layout to launch and manage a Passenger-backed application. A layout consists of 4 features: Startup file Passenger loads this file to start the application Startup file names differ by application type (Python, Ruby, Node.js, Meteor) Document root folder called public/ all static content goes here (images, JavaScript, CSS) Apache configuration…
Overview Passenger supports Python, Ruby, Node.js, Meteor as well as any application built using this technology. In creating several of the articles in this knowledgebase, we also created a very basic application to guide during writing. These applications are up and running under a sandbox domain and represent just a sliver of the applications that you…
Overview Meteor is a web framework written on top of Node.js. Meteor hooks into Passenger for seamless process launching and flexible, agile scalability. Meteor requires terminal access to use. This guide covers launching Meteor on a v6+ platform. Quickstart PREREQUISITE: follow the MongoDB tutorial to setup MongoDB. Install Meteor from the terminal: cd ~ curl https://install.meteor.com/ | sh…
Overview Ghost is a gorgeous blogging platform supported on Developer+ accounts on v6+ platforms. Ghost requires terminal access to deploy and hooks into Passenger affording simple process management. Quickstart This guide is designed to get Ghost up and running with the fewest steps. Ghost will be SQLite as a database backend, but you might…