Errors deploying Node.js app

In the tutorial's part 2, step 2.b, you need to specify your Cloudant credentials. There are several ways to get Cloudant credentials, but I'll focus on doing it within the context of Bluemix and the cf command line tool.

You will first need to create a Cloudant service instance, then create a set of service keys (credentials) and then view them.

Create a Cloudant service instance named myCloudantSvc using the Shared plan:

$> cf create-service cloudantNoSQLDB Shared myCloudantSvc

Create a set of service keys (credentials) named cred1:

$> cf create-service-key myCloudantSvc cred1

View the credentials for the service key you just created

$> cf service-key myCloudantSvc creed

With the last step above, you should see output which provides you with the username, password and host values that you'll need to place into your app.js code. It should look something like the following:

{
 "host": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx-bluemix.cloudant.com",
 "password": "longSecretPassword",
 "port": 443,
 "url": "https://xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx-bluemix:longSecretPassword@xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx-bluemix.cloudant.com",
 "username": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx-bluemix"
}

For your second question, it looks like you're performing the cf push from your $HOME directory (as mentioned in the comment by @vmovva). By default, the cf push command will send all files in the current directory to Bluemix/CloudFoundry.

Try running the command from the directory where your source code is located to reduce the files pushed to Bluemix. If your source code is intermingled in your $HOME directory, move your source into a different directory and then push from that directory.