Ubuntu 16.04
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OpenStack Mitaka : How to use Heat
2016/06/08
 
How to use the OpenStack Orchestration Service (Heat).
This example is based on the environment like follows.
                                |
+------------------+            |            +------------------------+
| [ Control Node ] |            |            |    [ Network Node ]    |
|     Keystone     |10.0.0.30   |   10.0.0.50|    DHCP,L3,L2 Agent    |
|      Glance      |------------+------------|     Metadata Agent     |
|     Nova API     |eth0        |        eth0|    Heat API,API-CFN    |
|  Neutron Server  |            |            |       Heat Engine      |
+------------------+            |            +------------------------+
                            eth0|10.0.0.51
                      +--------------------+
                      |  [ Compute Node ]  |
                      |    Nova Compute    |
                      |      L2 Agent      |
                      +--------------------+

[1] Deploy Instances with Heat services and templates. The example below is on the Controle Node.
# create a template for test

root@dlp ~(keystone)#
vi sample-stack.yml
heat_template_version: 2016-04-08

description: Heat Sample Template

parameters:
  ImageID:
    type: string
    description: Image used to boot a server
  NetID:
    type: string
    description: Network ID for the server

resources:
  server1:
    type: OS::Nova::Server
    properties:
      name: "Heat_Deployed_Server"
      image: { get_param: ImageID }
      flavor: "m1.small"
      networks:
      - network: { get_param: NetID }

outputs:
  server1_private_ip:
    description: IP address of the server in the private network
    value: { get_attr: [ server1, first_address ] }

root@dlp ~(keystone)#
glance image-list

+--------------------------------------+------------+
| ID                                   | Name       |
+--------------------------------------+------------+
| d7e743c4-c1f5-458b-abc5-2d9176c07a93 | Ubuntu1604 |
+--------------------------------------+------------+

root@dlp ~(keystone)#
neutron net-list

+--------------------------------------+---------+-------------------------------------------------------+
| id                                   | name    | subnets                                               |
+--------------------------------------+---------+-------------------------------------------------------+
| 770a1018-973c-43bc-8922-26238b7bcde5 | ext_net | 24bee302-ab35-43fc-b415-3930d1e01902 10.0.0.0/24      |
| 4b658dd5-bc91-40d4-8268-c1fa2cfdfff0 | int_net | 3c232880-5aca-42fd-b9f9-a077cf5e6a39 192.168.100.0/24 |
+--------------------------------------+---------+-------------------------------------------------------+

root@dlp ~(keystone)#
Int_Net_ID=`neutron net-list | grep int_net | awk '{ print $2 }'`
# create an instance from the template

root@dlp ~(keystone)#
heat stack-create -f sample-stack.yml -P "ImageID=Ubuntu1604;NetID=$Int_Net_ID" Sample-Stack

+--------------------------------------+--------------+--------------------+---------------------+--------------+
| id                                   | stack_name   | stack_status       | creation_time       | updated_time |
+--------------------------------------+--------------+--------------------+---------------------+--------------+
| 5040ab16-54cb-468b-ae4a-0b474a4930ac | Sample-Stack | CREATE_IN_PROGRESS | 2016-06-09T11:28:33 | None         |
+--------------------------------------+--------------+--------------------+---------------------+--------------+

# turn to "CREATE_COMPLETE" after few minutes later like follows

root@dlp ~(keystone)#
heat stack-list

+--------------------------------------+--------------+-----------------+---------------------+--------------+
| id                                   | stack_name   | stack_status    | creation_time       | updated_time |
+--------------------------------------+--------------+-----------------+---------------------+--------------+
| 5040ab16-54cb-468b-ae4a-0b474a4930ac | Sample-Stack | CREATE_COMPLETE | 2016-06-09T11:28:33 | None         |
+--------------------------------------+--------------+-----------------+---------------------+--------------+

# the instance is running which is created from the Heat template

root@dlp ~(keystone)#
nova list

+----------------+----------------------+---------+------------+-------------+-----------------------------------+
| ID             | Name                 | Status  | Task State | Power State | Networks                          |
+----------------+----------------------+---------+------------+-------------+-----------------------------------+
| c6ea1f23-d031- | Heat_Deployed_Server | ACTIVE  | -          | Running     | int_net=192.168.100.4             |
| 545457b2-517f- | Ubuntu_1604          | SHUTOFF | -          | Shutdown    | int_net=192.168.100.3, 10.0.0.201 |
+----------------+----------------------+---------+------------+-------------+-----------------------------------+

# delete the instance likwe follows if you don't need

root@dlp ~(keystone)#
heat stack-delete Sample-Stack

Are you sure you want to delete this stack(s) [y/N]?
y

+--------------------------------------+--------------+-----------------+---------------------+--------------+
| id                                   | stack_name   | stack_status    | creation_time       | updated_time |
+--------------------------------------+--------------+-----------------+---------------------+--------------+
| 5040ab16-54cb-468b-ae4a-0b474a4930ac | Sample-Stack | CREATE_COMPLETE | 2016-06-09T11:28:33 | None         |
+--------------------------------------+--------------+-----------------+---------------------+--------------+

root@dlp ~(keystone)#
heat stack-list

+----+------------+--------------+---------------+
| id | stack_name | stack_status | creation_time |
+----+------------+--------------+---------------+
+----+------------+--------------+---------------+
[2]
The guide for writing templates are opened on the official site below.
⇒ http://docs.openstack.org/developer/heat/template_guide/index.html
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