Deploying Blueprints

Blueprints are descriptors or patterns which describe how Apache Brooklyn should deploy applications. Blueprints are written in YAML and many of the entities available are defined in the Brooklyn Catalog.

Launching from a Blueprint

We'll start by deploying an application with a simple YAML blueprint containing an Apache Tomcat server.

Copy the blueprint below into a text file, "myapp.yaml", in your workspace (Note, to copy the file you can hover your mouse over the right side of the text box below to get a Javascript "copy" button).

name: Tomcat
services:
- type: org.apache.brooklyn.entity.webapp.tomcat.TomcatServer
  name: tomcatServer
location: <your-location-definition-goes-here>

Locations

Before you can create an application with this configuration, you need to modify the YAML to specify a location. Locations in Apache Brooklyn are server resources which Brooklyn can use to deploy applications. These locations may be servers or cloud providers which provide access to servers.

In order to configure the location in which Apache Brooklyn launches an application, replace the location: element with values for your chosen target environment. Here are some examples of the various location types:

Hint: in the top right of this page are buttons to select a location. Choose your location to see the most appropriate instructions here.

Vagrant location

The Vagrant configuration described in Running Apache Brooklyn, on the previous page is the recommended way of running this tutorial. This configuration comes with four blank vagrant configurations called byon1 to byon4.

These can be launched by entering the following command into the terminal in the vagrant configuration directory.

 $ vagrant up byon1 byon2 byon3 byon4

The location in "myapp.yaml" can now be replaced with the following YAML to launch using these vagrant servers.

location:
  byon:
    user: vagrant
    password: vagrant
    hosts:
      - 10.10.10.101
      - 10.10.10.102
      - 10.10.10.103
      - 10.10.10.104

Note: For instructions on setting up a variety of locations or storing credentials/locations in a file on disk rather than in the blueprint, see Locations in the Operations section of the User Guide.

Deploying the Application

First, log in to brooklyn with the command line interface (CLI) tool by typing:

$ br login http://localhost:8081/

To secure the Apache Brooklyn instance, you can add a username and password to Brooklyn's properties file, as described in the User Guide here. If this is configured, the login command will require an additional parameter for the userid and will then prompt for a password.

Now you can create the application with the command below:

$ br deploy myapp.yaml 
Id:       hTPAF19s   
Name:     Tomcat   
Status:   In progress

Depending on your choice of location it may take some time for the application to start, the next page describes how you can monitor the progress of the application deployment and verify if it was successful.

Next

Having deployed an application, the next step is monitoring and managing it.

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