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OpenStack Wallaby : How to use Heat2021/04/20

 
How to use the OpenStack Orchestration Service (Heat).
This example is based on the environment like follows.
------------+---------------------------+---------------------------+------------
            |                           |                           |
        eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
+-----------+-----------+   +-----------+-----------+   +-----------+-----------+
|    [ Control Node ]   |   |    [ Storage Node ]   |   |    [ Compute Node ]   |
|                       |   |                       |   |                       |
|  MariaDB    RabbitMQ  |   |      Open vSwitch     |   |        Libvirt        |
|  Memcached  httpd     |   |     Neutron Server    |   |     Nova Compute      |
|  Keystone   Glance    |   |       OVN-Northd      |   |      Open vSwitch     |
|  Nova API             |   |     Cinder Volume     |   |   OVN Metadata Agent  |
|  Cinder API           |   |     iSCSI Target      |   |     OVN-Controller    |
|                       |   |    Heat API/Engine    |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[1] Deploy Instances with Heat services and templates. The example below is on the Controle Node.
root@dlp ~(keystone)#
apt -y install python3-heatclient
# create a template for tests

root@dlp ~(keystone)#
vi sample-stack.yml
heat_template_version: 2018-08-31

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)#
openstack image list

+--------------------------------------+------------+--------+
| ID                                   | Name       | Status |
+--------------------------------------+------------+--------+
| 8df08a02-7c19-465e-8862-53eb2319918d | Ubuntu2004 | active |
+--------------------------------------+------------+--------+

root@dlp ~(keystone)#
openstack network list

+--------------------------------------+---------+--------------------------------------+
| ID                                   | Name    | Subnets                              |
+--------------------------------------+---------+--------------------------------------+
| 04e8b9fa-9798-4595-a840-b0f6338e83e8 | public  | 0b3c70ba-60d8-46c5-af21-910548abfbf9 |
| 42c5be25-c9f0-467f-99bf-743a420abf03 | private | a39a9811-f7a4-49c1-80f1-f753bf27a11c |
+--------------------------------------+---------+--------------------------------------+

root@dlp ~(keystone)#
Int_Net_ID=$(openstack network list | grep private | awk '{ print $2 }')
# create an instance from the template

root@dlp ~(keystone)#
openstack stack create -t sample-stack.yml --parameter "ImageID=Ubuntu2004;NetID=$Int_Net_ID" Sample-Stack

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| id                  | 909eb55d-da96-4905-9b9f-48c643ec3d98 |
| stack_name          | Sample-Stack                         |
| description         | Heat Sample Template                 |
| creation_time       | 2021-04-19T08:34:16Z                 |
| updated_time        | None                                 |
| stack_status        | CREATE_IN_PROGRESS                   |
| stack_status_reason | Stack CREATE started                 |
+---------------------+--------------------------------------+

# turn to [CREATE_COMPLETE] after few minutes later like follows

root@dlp ~(keystone)#
openstack stack list

+--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+
| ID                                   | Stack Name   | Project                          | Stack Status    | Creation Time        | Updated Time |
+--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+
| 909eb55d-da96-4905-9b9f-48c643ec3d98 | Sample-Stack | da2214d30eaa4b7aaae25c8cbba0483e | CREATE_COMPLETE | 2021-04-19T08:34:16Z | None         |
+--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+

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

root@dlp ~(keystone)#
openstack server list

+--------------------------------------+----------------------+--------+-------------------------+------------+----------+
| ID                                   | Name                 | Status | Networks                | Image      | Flavor   |
+--------------------------------------+----------------------+--------+-------------------------+------------+----------+
| 762c9a4d-3a16-4e62-afe4-fb9b54191038 | Heat_Deployed_Server | ACTIVE | private=192.168.100.123 | Ubuntu2004 | m1.small |
+--------------------------------------+----------------------+--------+-------------------------+------------+----------+

# delete the instance

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

root@dlp ~(keystone)#
openstack stack list


[2]
The guide for writing templates are opened on the official site below.
⇒ https://docs.openstack.org/heat/latest/template_guide/index.html
[3] If you'd like to use Heat with common users, it needs to change some settings.
root@dlp ~(keystone)#
openstack role list

+----------------------------------+------------------+
| ID                               | Name             |
+----------------------------------+------------------+
| 2d94fe600782461091f60a4d8a32b489 | reader           |
| 327e923f25754401a0b1fc1b8a16bf28 | heat_stack_owner |
| 936654cab29047459ba7080aea91beff | member           |
| d257716c488e41dabaf3e4985bb6707b | CloudUser        |
| dd621362b3da49b68d4ad5cff8af764f | heat_stack_user  |
| edd5e08d3efb4ee9ada8713dc9b8ba83 | admin            |
+----------------------------------+------------------+

root@dlp ~(keystone)#
openstack project list

+----------------------------------+-----------+
| ID                               | Name      |
+----------------------------------+-----------+
| b1f2e1bdf6fb4e03bb30ef3b90764d3b | service   |
| da2214d30eaa4b7aaae25c8cbba0483e | admin     |
| e256a7323fda468fb02e8f1975fce488 | hiroshima |
+----------------------------------+-----------+

root@dlp ~(keystone)#
openstack user list

+----------------------------------+-------------------+
| ID                               | Name              |
+----------------------------------+-------------------+
| dd9136aeab894d66bc6aff94ceba90a2 | admin             |
| 7b78d22f820441e89143555a34a88604 | glance            |
| 61abb3442b46467f848d653798763a6f | nova              |
| c2a87e720b1e4561824070fa1a2f8931 | placement         |
| 2383f0594a7a4e4bab995eaf96f6af9a | neutron           |
| 3ebb8ec1b4fc467da96379caef902df7 | serverworld       |
| 0eb6e22ca46b4746a03da8a9d472492f | cinder            |
| bd806f7ce39e4262ae0b7fc7ef439192 | heat              |
| 47443b84dc1f4e2287aeea6c4992c9db | heat_domain_admin |
+----------------------------------+-------------------+

# for example, add [serverworld] user in [hiroshima] project to [heat_stack_owner] role

root@dlp ~(keystone)#
openstack role add --project hiroshima --user serverworld heat_stack_owner
# on the Node Neutron Server is running, change settings

root@network:~#
vi /etc/neutron/policy.json
# create new

# overwrite some settings

{
  "create_port:fixed_ips:subnet_id": "",
  "create_port:allowed_address_pairs": "",
  "create_port:allowed_address_pairs:ip_address": "",
}

root@network:~#
systemctl restart neutron-server

# that's OK, common users can create stacks

ubuntu@dlp ~(keystone)$
openstack stack list

+--------------------------------------+--------------+-----------------+----------------------+--------------+
| ID                                   | Stack Name   | Stack Status    | Creation Time        | Updated Time |
+--------------------------------------+--------------+-----------------+----------------------+--------------+
| 8cae8ae4-4600-46bd-b5dc-eaf638773e12 | Sample-Stack | CREATE_COMPLETE | 2021-04-19T08:37:14Z | None         |
+--------------------------------------+--------------+-----------------+----------------------+--------------+

ubuntu@dlp ~(keystone)$
openstack server list

+--------------------------------------+----------------------+---------+-------------------------------------+------------+----------+
| ID                                   | Name                 | Status  | Networks                            | Image      | Flavor   |
+--------------------------------------+----------------------+---------+-------------------------------------+------------+----------+
| a2c614b3-fdf4-43c8-ab0d-b5d80c276934 | Heat_Deployed_Server | ACTIVE  | private=192.168.100.237             | Ubuntu2004 | m1.small |
| 675fa368-4534-4d38-bc14-319a90f09470 | Ubuntu-2004          | SHUTOFF | private=10.0.0.207, 192.168.100.169 | Ubuntu2004 | m1.small |
+--------------------------------------+----------------------+---------+-------------------------------------+------------+----------+
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