OpenStack Zed : How to use Heat2022/11/11 |
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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)]#
dnf --enablerepo=centos-openstack-zed,epel,crb -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 | +--------------------------------------+----------------+--------+ | 8367cc21-61f4-480b-8d03-90c057c7a7cf | CentOS-Stream9 | active | +--------------------------------------+----------------+--------+[root@dlp ~(keystone)]# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 004ca400-3d79-4c1b-b8fb-bba1e273000e | public | 80213093-ac95-469a-b4d9-8c6adc93cfe1 | | c9c79a1d-136e-4036-8fe0-eaac79f05f5d | private | 85e66c6a-66eb-490f-a4fa-e21f91678c89 | +--------------------------------------+---------+--------------------------------------+[root@dlp ~(keystone)]# Int_Net_ID=$(openstack network list | grep private | awk '{ print $2 }')
# create an instance from the template [root@dlp ~(keystone)]# openstack stack create -t sample-stack.yml --parameter "ImageID=CentOS-Stream9;NetID=$Int_Net_ID" Sample-Stack +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | id | 39417140-05b9-47b2-b92d-40876d5a1144 | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2022-11-11T00:29:01Z | | updated_time | None | | stack_status | CREATE_IN_PROGRESS | | stack_status_reason | Stack CREATE started | +---------------------+--------------------------------------+ # turn to [CREATE_COMPLETE] after few minutes later [root@dlp ~(keystone)]# openstack stack list +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ | ID | Stack Name | Project | Stack Status | Creation Time | Updated Time | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ | 39417140-05b9-47b2-b92d-40876d5a1144 | Sample-Stack | 939974d6fc8e400eb01f7dd749935ea3 | CREATE_COMPLETE | 2022-11-11T00:29:01Z | None | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template [root@dlp ~(keystone)]# openstack server list +--------------------------------------+----------------------+--------+-------------------------+----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+--------+-------------------------+----------------+----------+ | 55681685-50f6-4252-a587-dee173e91129 | Heat_Deployed_Server | ACTIVE | private=192.168.100.243 | CentOS-Stream9 | m1.small | +--------------------------------------+----------------------+--------+-------------------------+----------------+----------+ # delete the instance [root@dlp ~(keystone)]# openstack stack delete --yes Sample-Stack
[root@dlp ~(keystone)]#
[root@dlp ~(keystone)]# openstack stack list openstack server 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 | +----------------------------------+------------------+ | 16412daf1fb0451bbc38119fbe7fdd5e | heat_stack_owner | | 2ed73129635949579e071bd01563ba4f | admin | | 8c46c138d04543a19500eb30170adc5a | reader | | ad273121353f477db37e30d683deb0d4 | CloudUser | | b5fd8fd9ddf94d19911472d768ef9f2c | heat_stack_user | | e5a78e58eab343b5ad161b837cb04677 | member | +----------------------------------+------------------+[root@dlp ~(keystone)]# openstack project list +----------------------------------+-----------+ | ID | Name | +----------------------------------+-----------+ | 28b6e37c787240e4a975d3614821cc71 | hiroshima | | 62f531f4d2934e75b8d7f11cd7d53be3 | service | | 939974d6fc8e400eb01f7dd749935ea3 | admin | +----------------------------------+-----------+[root@dlp ~(keystone)]# openstack user list +----------------------------------+-------------------+ | ID | Name | +----------------------------------+-------------------+ | f00e5072d7d6488f935ea680256af89c | admin | | 78009f5643d240da9996dff0aee5cc37 | glance | | 7ed52b257a47436389a60aef689d20f0 | nova | | 2080b84b7e304486b33365a447963bc1 | placement | | 6f4af63a84f944f3a7a0c018ef64a4a1 | neutron | | 9e8824a151c949ad9105535ead452501 | serverworld | | 42de8b3de0c74f3e9f1622c89fc1a178 | cinder | | 03b59cb43c8547d4bf0a055dd9edd7a8 | heat | | e8c47aafd9324805b90b52f963dc6cad | 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, allowed common users can create stacks [cent@dlp ~(keystone)]$ openstack stack list +--------------------------------------+--------------+-----------------+----------------------+--------------+ | ID | Stack Name | Stack Status | Creation Time | Updated Time | +--------------------------------------+--------------+-----------------+----------------------+--------------+ | bdd82a73-c300-4e92-b6dc-4a33bcadd0ad | Sample-Stack | CREATE_COMPLETE | 2022-11-11T00:33:47Z | None | +--------------------------------------+--------------+-----------------+----------------------+--------------+[cent@dlp ~(keystone)]$ openstack server list +--------------------------------------+----------------------+---------+------------------------------------+----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+---------+------------------------------------+----------------+----------+ | 9198ab3c-be9d-4a67-8818-9ceb111ffa41 | Heat_Deployed_Server | ACTIVE | private=192.168.100.176 | CentOS-Stream9 | m1.small | | 158685ed-8159-4aad-a294-3227b427f7e1 | CentOS-St9 | SHUTOFF | private=10.0.0.218, 192.168.100.75 | CentOS-Stream9 | m1.small | +--------------------------------------+----------------------+---------+------------------------------------+----------------+----------+ |
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