Orchestration

Template creation

Template example:

$ cat demo-template.yml
heat_template_version: 2015-10-15
description: Launch a basic instance with CentOS image

parameters:
  NetID:
    type: string
    description: Network ID to use for the instance.

resources:
  server:
    type: OS::Nova::Server
    properties:
      image: CentOS
      flavor: bsc.t
      key_name: key-user
      networks:
      - network: { get_param: NetID }

outputs:
  instance_name:
    description: Name of the instance.
    value: { get_attr: [ server, name ] }
  instance_ip:
    description: IP address of the instance.
    value: { get_attr: [ server, first_address ] }

Stack Creation

$ openstack stack create -t demo-template.yml --parameter "NetID=e53ae870-8fd6-4c26-ab65-1161788b26d0" demo-stack
+---------------------+-----------------------------------------------------------------------------------------------------------------+
| Field               | Value                                                                                                           |
+---------------------+-----------------------------------------------------------------------------------------------------------------+
| stack_name          | demo-stack                                                                                                      |
| description         | Launch a basic instance with CentOS image using the ``bsc.t`` flavor, ``key-user`` key,  and net-bsc99 network. |
| creation_time       | 2021-10-29T13:21:15Z                                                                                            |
| updated_time        | None                                                                                                            |
| stack_status        | CREATE_IN_PROGRESS                                                                                              |
| stack_status_reason | Stack CREATE started                                                                                            |
+---------------------+-----------------------------------------------------------------------------------------------------------------+

$ openstack stack list
+--------------------------------------+------------+-----------------+----------------------+--------------+
| ID                                   | Stack Name | Stack Status    | Creation Time        | Updated Time |
+--------------------------------------+------------+-----------------+----------------------+--------------+
| 488f7d41-f538-45bb-b849-e17bd9feaccb | demo-stack | CREATE_COMPLETE | 2021-10-29T13:21:15Z | None         |
+--------------------------------------+------------+-----------------+----------------------+--------------+

$ openstack server list
+--------------------------------------+------------------------------------------+---------+---------------------------+--------+---------+
| ID                                   | Name                                     | Status  | Networks                  | Image  | Flavor  |
+--------------------------------------+------------------------------------------+---------+---------------------------+--------+---------+
| e2e7c4e1-b7bc-4e1a-b2a4-b44110d114a7 | demo-stack-server-z3fh3d4rmz4x           | ACTIVE  | net-bsc99=192.168.20.115  | CentOS | bsc.t   |
+--------------------------------------+------------------------------------------+---------+---------------------------+--------+---------+