Ubuntu 14.04
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OpenStack Liberty : How to use Heat
2015/12/28
 
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: 2015-10-15

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       |
+--------------------------------------+------------+
| f29a589b-595a-4f0c-bbce-f6f3537f2a7c | Ubuntu1404 |
+--------------------------------------+------------+
root@dlp ~(keystone)#
neutron net-list 

+--------------------------------------+---------+-------------------------------------------------------+
| id                                   | name    | subnets                                               |
+--------------------------------------+---------+-------------------------------------------------------+
| f1c05750-2dbe-4e9e-9b56-ca4107f54160 | ext_net | 30dee5b0-0504-4575-be0e-455ac25a68d4 10.0.0.0/24      |
| c352c783-37d5-40c4-8e50-0d0d6e44fa21 | int_net | 7e3e5878-b69b-427c-b24d-ac9cbdf284ce 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=Ubuntu1404;NetID=$Int_Net_ID" Sample-Stack 

+--------------------------------------+--------------+--------------------+---------------------+--------------+
| id                                   | stack_name   | stack_status       | creation_time       | updated_time |
+--------------------------------------+--------------+--------------------+---------------------+--------------+
| 4f2e06f2-428c-4c62-96da-a43cfbf030dc | Sample-Stack | CREATE_IN_PROGRESS | 2016-01-03T12:07:46 | 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 |
+--------------------------------------+--------------+-----------------+---------------------+--------------+
| 4f2e06f2-428c-4c62-96da-a43cfbf030dc | Sample-Stack | CREATE_COMPLETE | 2016-01-03T12:07:46 | 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                          |
+-----------+----------------------+---------+------------+-------------+-----------------------------------+
| 3ae2b32c- | Heat_Deployed_Server | ACTIVE  | -          | Running     | int_net=192.168.100.4             |
| a25ba5e7- | Ubuntu_1404          | SHUTOFF | -          | Shutdown    | int_net=192.168.100.3, 10.0.0.201 |
+-----------+----------------------+---------+------------+-------------+-----------------------------------+
# delete the instance like follows if you don't need

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

+--------------------------------------+--------------+-----------------+---------------------+--------------+
| id                                   | stack_name   | stack_status    | creation_time       | updated_time |
+--------------------------------------+--------------+-----------------+---------------------+--------------+
| 4f2e06f2-428c-4c62-96da-a43cfbf030dc | Sample-Stack | CREATE_COMPLETE | 2016-01-03T12:07:46 | 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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