OpenStack Ussuri : How to use Heat2020/06/18 |
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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 ] | | [ Network Node ] | | [ Compute Node ] |
| | | | | |
| MariaDB RabbitMQ | | L2 Agent | | Libvirt |
| Memcached httpd | | L3 Agent | | Nova Compute |
| Keystone Glance | | Metadata Agent | | L2 Agent |
| Nova API | | Cinder Volume | | |
| Neutron Server | | Heat API | | |
| Metadata Agent | | Heat Engine | | |
| Cinder API | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] | Deploy Instances with Heat services and templates. The example below is on the Controle Node. |
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 | +--------------------------------------+------------+--------+ | de51f2d9-aa58-4a34-87d6-857451599d9a | Ubuntu2004 | active | +--------------------------------------+------------+--------+root@dlp ~(keystone)# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 1f3f1f9b-4822-4312-b5a5-51a529cd6e8a | ext_net | ddfcdd10-7ecb-4239-b3d7-46fdd15a006d | | b351e1b9-bd7c-4e3c-b5eb-848d211f4392 | int_net | e2a461fc-9d50-4bab-913f-14067b175ea6 | +--------------------------------------+---------+--------------------------------------+root@dlp ~(keystone)# Int_Net_ID=$(openstack network list | grep int_net | 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 | 0c419d97-adac-4407-a30c-e07e8171c059 | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2020-06-18T01:14:52Z | | 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 | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ | 0c419d97-adac-4407-a30c-e07e8171c059 | Sample-Stack | 3227cdd34d5c4d9c97eeb8f0dfdf5d0e | CREATE_COMPLETE | 2020-06-18T01:14:52Z | None | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template root@dlp ~(keystone)# openstack server list +--------------------------------------+----------------------+--------+-------------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+--------+-------------------------+------------+----------+ | 605f8ef4-9ecb-4da9-859e-28c351c30977 | Heat_Deployed_Server | ACTIVE | int_net=192.168.100.253 | 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 |
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