Preparing a sample application
Throughout the rest of this basics tutorial, we will demonstrate Passenger's basic features through a sample Meteor application. In this step we will show you how to create this sample application.
Create the app
Let us create an example Meteor app directory structure in your home directory. We use the builtin Meteor leaderboard example app. If you have already done this as part of the quickstart, feel free to skip to "Create an app package".
$ cd ~ $ meteor create --example leaderboard $ cd leaderboard
Create an app package
In the previous step, you only created a Meteor app in development mode. In this tutorial, we also need a packaged version of your Meteor sample app. A packaged Meteor app contains the Meteor runtime and various other necessary things for running a Meteor app in production. Some Passenger features are only compatible with packaged Meteor apps.
leaderboard directory, use the
meteor bundle command to create a package tarball.
$ meteor bundle package.tar.gz
Why creating a package?
Wondering why we instruct you to create a package, instead of just using the Meteor app in unpackaged form. Learn more at About Meteor support.
"meteor bundle" deprecated?
Meteor will probably tell you that
meteor bundle is deprecated in favor of
meteor build. Please ignore that message, because for the purpose of running a Meteor web application on Passenger, only `meteor bundle` does what we want.
`meteor bundle` creates a packaged web application, in the form of a Node.js web app with the Meteor runtime included. `meteor build` is a more comprehensive tool that not only does what `meteor bundle` does, but also builds iOS and Android app packages. However, Passenger is a web application server, so iOS and Android packages are not relevant to us, which is why we recommend using `meteor bundle` instead of `meteor build`.
The packaged app has now been placed in
package.tar.gz. But Passenger expects a directory, so let us extract it in
$ mkdir ../leaderboard-package $ cd ../leaderboard-package $ tar xzf ../leaderboard/package.tar.gz
The packaged app directory doesn't contain any dependencies, so we need to install them. Run:
$ cd bundle/programs/server $ npm install
Finally, return to the original
leaderboard app directory:
$ cd ../../../../leaderboard
Meteor package and MongoDB
During development, the Meteor runtime takes care of starting MongoDB for you. MongoDB is the database engine that Meteor uses.
But a packaged Meteor app does not start MongoDB for you. Instead, a packaged Meteor app expects that MongoDB is already running somewhere, and that you tell the app where that MongoDB instance is. In the Process management section we will show you how to run MongoDB separately and how to tell your app where MongoDB is.
Next, we will introduce you to the
passenger command, which starts your app in Passenger.