HEAT Provisioning

HEAT Provisioning example

In the first part of the lab you have learned:

  • how to design a Service Dialog
  • how to create a Service Catalog
  • put everything together with a Service Catalog Item
  • order from the Service Catalog

In the second part of the lab, we want to use HEAT to create a new instance and to provision an application inside the instance. We are using the probably most popular example: Wordpress. The HEAT template we use, can be found in the OpenStack Git Repository.

In the previous lab, we had to create a Service Dialog manually. With HEAT, CloudFormations and Microsoft ARM Templates, CloudForms can automatically create a Service Dialog for us. We can still edit this automatically created Service Dialog, to adjust it to our needs.

Prepare the HEAT Template

Before we can import the template into CloudForms, we need to download it or have it open in a separate browser window.

Please used the forked version of the HEAT Template, which has an additional field “Network” defined. Without this field, running the HEAT Template will fail with an error indicating that mulitple networks are available and hence a network has to be specified.

  1. Go to the template on the Github project page.

    https://github.com/cbolz/partner-conference-2017-labs/blob/master/cloudforms-service-catalog-lab/HEAT/WordPress_Native.yaml

  2. Make sure to open the file in “RAW” mode or use this link:

    https://raw.githubusercontent.com/cbolz/partner-conference-2017-labs/master/cloudforms-service-catalog-lab/HEAT/WordPress_Native.yaml

  3. Download the HEAT Template or open it in a separate browser window so you can copy and paste it into the CloudForms Web UI

Import the HEAT Template

The following procedure will import a HEAT template, create a service dialog and tie everything together in a service catalog item.

  1. Navigate to Services -> Catalogs

    navigate to services catalogs

  2. Click on Orchestration Templates in the accordion on the left

    orchestration templates

    You should see one existing templates which is provided by CloudForms out of the box. It’s a special predefined template to provision virtual machines on Microsoft Azure.

  3. Create a new Orchestration template by clicking on Configuration -> Create new Orchestration Template

  4. Give the template a name and description:

    Name: Wordpress HEAT Template

    Description: This template can be used to deploy a Wordpress instance on OpenStack

    Template Type: OpenStack Heat

    Copy and paste the HEAT Template you downloaded before into the large text area below those fields. Make sure you copy the entire HEAT template by opening the RAW page of the file on Github.

    wordpress template

The screenshot is truncated! Make sure you copy the entire HEAT Template! The first line should be:

    heat_template_version: 2013-05-23

And the last line should be:

    host: { get_attr: [wordpress_instance, first_address] }
  1. Click Add to save the orchestration template

    orchestration template saves

Create a Service Dialog from a HEAT template

Earlier in this lab you learned how to manually create a Service Dialog. Now we will see that CloudForms can do this work for us, if we use an orchestration template.

  1. Navigate to the orchestration template you just created

  2. Click on Configuration -> Create Service Dialog from Orchestration Template

    create service dialog from wordpress heat template

  3. Enter a name for the new Service Dialog

    Service Dialog Name: Wordpress HEAT Template

    create service dialog from orchestration template

  4. Click on Save to create the Service Dialog

    service dialog from orchestration template created

Verify the Service Dialog

The Service Dialog was automatically created. We want to verify it was created properly and has all the expected fields.

  1. Navigate to Automation -> Automate -> Customization

    navigate to Automation, Automate, Customization

  2. Navigate to Service Dialogs in the accordion on the left.

    navigate to service dialogs

  3. Click on the new Service Dialog “Wordpress HEAT Template”

  4. A preview will show how the Service Dialog will look like, when it’s used in a Service Catalog Item.

    service dialog preview

  5. The preview shows us that the Service Dialog is using a default image called “fedora-20.x86_64”. We do not have such an image and want to change the Service Dialog accordingly.

  6. Click on Configuration -> Edit this Dialog. Navigate to the element called “Image”

    edit the image name

  7. Change the value of the field “Default Value”

    Default Value: rhel7.3

    change the image name

  8. Commit the changes by clicking on Save

    after saving the changes

Build a HEAT Service Catalog

The following steps will create a service catalog.

  1. The next step is to create a service catalog. First we have to navigate to Services -> Catalogs.

    navigate to services, catalog

  2. On this screen click on Catalogs on the left

    service catalogs

  3. Click on Configuration and Add a New Catalog

  4. Fill out name and description:

    Name: HEAT Templates

    Description: Deploy HEAT Templates from the Catalog

    add a new catalog

  5. Click Add to save the Service Catalog

Build a HEAT Service Catalog Item

To put everything together we create a Service Catalog Item similar to before.

  1. Navigate to Services -> Catalogs

    navigate to services, catalog

  2. Click on Catalog items in the accordion on the left.

    You should already see three Service Catalogs:

    Unassigned: Catalog Items which are not published yet, will be listed here

    Virtual Machines: the Service Catalog we created in the first part of the lab

    HEAT Templates: the Service Catalog you just created

    navigate to catalog items

  3. In the Configuration Menu, click on Add a New Catalog Item

  4. Chose the Catalog Item Type. For this example we want to use HEAT on OpenStack which is an Orchestration provider, so click on Orchestration

    select catalog item type

  5. The next dialog will ask for the details for the new Catalog Item

    The name of the Catalog Item shown in the UI:

    Name: Wordpress

    A more descriptive text about the Catalog Item:

    Description: Wordpress from HEAT

    Check the “Display in Catalog” box. If not selected, the Catalog Item will not be visible to users. This can be used for Items which are either still in draft mode, or should only be ordered as a part of a bundle.

    Display in Catalog: check this box

    Select the previously created Service Catalog:

    Catalog: HEAT Templates

    Select the previously created Service Dialog:

    Dialog: Wordpress HEAT Template

    The template to execute:

    Orchestration Template: Wordpress HEAT Template

    Select on which provider the HEAT Template should be executed:

    Provider: OpenStack

    All other fields on this tab can remain unchanged.

    service catalog item details

    Entry Points are the hooks into CloudForms’ powerful Automation Framework. It allows administrators to define provisioning, reconfiguration and retirement workflows which are different from the out of the box behavior. For example we could add integration into an IP Address Management Tool, a ticketing system or a CMDB Service. For this lab, we want to stick with the out of the box experience and leave those fields unchanged.

  6. OPTIONAL: Click on the Details tab. You can provide some more descriptive explanation about the Service Catalog Item. We can even use basic HTML formatting in this box.

  7. Finally click on Add to save the Service Catalog Item

    catalog item saved

Order the HEAT Wordpress Catalog Item

For sure you want to test the Catalog Item you just created!

  1. Navigate to Services -> Catalogs and then click on Service Catalogs in the accordion on the left.

    navigate to services, catalog

  2. You should see the Service Catalog Item we just created:

    all services

  3. Click on the Service Catalog Item to see more details.

    service item details

  4. Click on Order

  5. Fill out the form:

    Select the tenant into which you want to deploy. There is only one tenant in OpenStack called “admin”

    Tenant: Admin

    Specify a stack name for your deployment:

    Stack Name: wordpress001

    For all other fields the provided default values can be accepted. Note that the image name is “rhel7.2” as you specified in your dialog.

    order HEAT template

    Click on Submit to start the deployment.

  6. You will be redirected to the request queue where you can see CloudForms working on your request.

Since we are using nested virtualization to run these labs, performs will be slow and it can take several minutes to complete the request (20-30 minutes).

![after ordering heat service catalog item](/img/pconf17-after-ordering-heat.png)

Verify provisioning in OpenStack

Let’s log into OpenStack to see what’s happening there.

  1. Log into OpenStack:

    https://osp-lu<number>.labs.rhepds.com

Make sure you use the HTTPS URL!

***username:*** admin

***Password:*** r3dh4t1!

![dashboard after login](/img/pconf17-osp-after-login.png)
  1. Navigate to Project in the menu bar on the top

    navigate to project

  2. Navigate to Orchestration -> Stacks

    navigate to orchestration stacks

  3. You should see your stack. It might already be completed or still in progress.If you can’t see it yet, wait a minute and reload the page.

    stack completed

  4. Click on the stack to get the details

    stack details

This concludes this lab.