OpenStack Zed : How to use Heat2022/10/10 |
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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
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [ dlp.srv.world ] | | [ network.srv.world ] | | [ node01.srv.world ] |
| (Control Node) | | (Network Node) | | (Compute Node) |
| | | | | |
| MariaDB RabbitMQ | | Open vSwitch | | Libvirt |
| Memcached Nginx | | Neutron Server | | Nova Compute |
| Keystone httpd | | OVN-Northd | | Open vSwitch |
| Glance Nova API | | Nginx iSCSI Target | | OVN Metadata Agent |
| Cinder API | | Cinder Volume | | OVN-Controller |
| | | Heat API/Engine | | |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] | Deploy Instances with Heat services and templates. The example below is on the Control Node. |
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root@dlp ~(keystone)#
apt -y install python3-heatclient
heat_template_version: 2021-04-16
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 | +--------------------------------------+------------+--------+ | 126bc335-fc00-478d-b84a-a9e79eba2574 | Ubuntu2204 | active | +--------------------------------------+------------+--------+root@dlp ~(keystone)# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 394ec727-7e9a-473e-8068-45aa841a9ac2 | public | ea6cb6cb-74ed-4007-bd25-b3fb84111e84 | | 7336a271-bec9-4d33-8dc5-e9f3a9892ed7 | private | a454cf3e-fef5-46f6-8468-4a26cbd14983 | +--------------------------------------+---------+--------------------------------------+root@dlp ~(keystone)# Int_Net_ID=$(openstack network list | grep private | awk '{ print $2 }')
# create an instance from the template root@dlp ~(keystone)# openstack stack create -t sample-stack.yml --parameter "ImageID=Ubuntu2204;NetID=$Int_Net_ID" Sample-Stack +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | id | 558f4398-183a-4351-9693-95d77b0817df | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2022-10-10T03:46:57Z | | 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 | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ | 558f4398-183a-4351-9693-95d77b0817df | Sample-Stack | 231a529f51394426b07c56f2c5ec580e | CREATE_COMPLETE | 2022-10-10T03:46:57Z | None | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template root@dlp ~(keystone)# openstack server list +--------------------------------------+----------------------+--------+------------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+--------+------------------------+------------+----------+ | 95fe8a79-8698-4e36-b9f1-3ea110926a93 | Heat_Deployed_Server | ACTIVE | private=192.168.100.12 | Ubuntu2204 | 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 a common user, it needs to add the user in Heat role. |
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root@dlp ~(keystone)# openstack role list +----------------------------------+------------------+ | ID | Name | +----------------------------------+------------------+ | 1df48dad71a745849c2847a3b5ec1785 | reader | | 384ed6af259c4fa88083f811393f0567 | heat_stack_user | | 452c8bdf83534aba852b732c7a149096 | member | | 4dc68cf727eb44f0b69e905ff64f3a29 | heat_stack_owner | | 5b696b9d402f4545b4592aa3f7733c68 | CloudUser | | 5c0c4dc038b5441f9b64345ea113f3cb | admin | +----------------------------------+------------------+root@dlp ~(keystone)# openstack project list +----------------------------------+-----------+ | ID | Name | +----------------------------------+-----------+ | 231a529f51394426b07c56f2c5ec580e | admin | | 4dd1e1f6bac441ff9c77002c3ab4c58a | hiroshima | | ee51c09c765e4a4d958c2bcc4dbb5665 | service | +----------------------------------+-----------+root@dlp ~(keystone)# openstack user list +----------------------------------+-------------------+ | ID | Name | +----------------------------------+-------------------+ | 7c9dbb0cdc284113964d618b24cc722e | admin | | 0aef0c555a4f4cc885c80dd0eb4f7c72 | glance | | 4d912be26a4149d590dbfb7bc8b015fa | nova | | b3ad6ca00649400a8eae75d64a1c2181 | placement | | bcf45964c78c40fba4c125e31dee3721 | neutron | | 9345b7f4de21427abf31ad308cf952f8 | serverworld | | 3042ebda5502448097dd0bbbe3058812 | cinder | | 1bfd1646d0e04371a3c6199bc98d152f | heat | | b477de75cfbe4a5e863bc4d7ea1d2d5f | 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
# that's OK, common users can create stacks ubuntu@dlp ~(keystone)$ openstack stack list +--------------------------------------+--------------+-----------------+----------------------+--------------+ | ID | Stack Name | Stack Status | Creation Time | Updated Time | +--------------------------------------+--------------+-----------------+----------------------+--------------+ | 7788d7b8-a6ad-4de1-b4e4-a7dc514e64d7 | Sample-Stack | CREATE_COMPLETE | 2022-10-10T03:52:32Z | None | +--------------------------------------+--------------+-----------------+----------------------+--------------+ubuntu@dlp ~(keystone)$ openstack server list +--------------------------------------+----------------------+---------+-------------------------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+---------+-------------------------------------+------------+----------+ | 0882b9a1-defa-4935-bd36-ada69c1c96e6 | Heat_Deployed_Server | ACTIVE | private=192.168.100.144 | Ubuntu2204 | m1.small | | a456ee32-b105-4c5e-8eae-ddccb48f913e | Ubuntu-2204 | SHUTOFF | private=10.0.0.228, 192.168.100.187 | Ubuntu2204 | m1.small | +--------------------------------------+----------------------+---------+-------------------------------------+------------+----------+ |
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