OpenStack Dalmatian : How to use Heat2024/10/11 |
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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-dalmatian,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 | +--------------------------------------+----------------+--------+ | 75e0d976-4075-4488-8f26-87d4a50aebe9 | CentOS-Stream9 | active | +--------------------------------------+----------------+--------+[root@dlp ~(keystone)]# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 7302c07e-c543-4a85-a955-d6cc8a4e4011 | public | 8fbc394a-e821-47d8-8efc-d5f7c7db0ff8 | | aa200aa9-ddb2-4d89-aa37-ce3e3a939421 | private | dfb0949d-d775-4c17-9b07-b01ac7d71aac | +--------------------------------------+---------+--------------------------------------+[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 | 5b7ac3eb-ee41-49aa-a6e2-23b8a1a5e300 | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2024-10-11T06:48:00Z | | 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 | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ | 5b7ac3eb-ee41-49aa-a6e2-23b8a1a5e300 | Sample-Stack | b19d04cd37254937a4eaebcd0f0f0a43 | CREATE_COMPLETE | 2024-10-11T06:48:00Z | None | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template [root@dlp ~(keystone)]# openstack server list +--------------------------------------+----------------------+--------+-------------------------+----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+--------+-------------------------+----------------+----------+ | 067b09be-049b-46bb-ba1f-a15e8a731de4 | Heat_Deployed_Server | ACTIVE | private=192.168.100.232 | 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 | +----------------------------------+------------------+ | 1d531758bc864a3cbb0d85e701aebbbb | heat_stack_user | | 325e5c0b45184b82a671d341b19de2aa | heat_stack_owner | | 4cbffcb8460a472e9f248e8536b6b254 | admin | | 81e7f75a8ff44892b9a7c66b1bfce8ed | service | | 842b4194a02f4ae2849a88d20c9240b1 | member | | c29749ff7b354c4eb175e6d22a99bc14 | manager | | ec7c81493ae4438fb9ef1b6f333302c7 | reader | +----------------------------------+------------------+[root@dlp ~(keystone)]# openstack project list +----------------------------------+-----------+ | ID | Name | +----------------------------------+-----------+ | 756e2b4937c44d3991028e294f92d89a | hiroshima | | aff8e7e402dc4d9e849bbe0e34fa4538 | service | | b19d04cd37254937a4eaebcd0f0f0a43 | admin | +----------------------------------+-----------+[root@dlp ~(keystone)]# openstack user list +----------------------------------+-------------------+ | ID | Name | +----------------------------------+-------------------+ | 2848dbbdd1714726b5b9a105c1382618 | admin | | acc884feccc14373a1f9fc8dda806eee | glance | | b46ff6a5849c4e90ae4eb0aa4b43e098 | nova | | f18f2b8163d44d15beaf9e491bc399f6 | placement | | bed4478c6b3446338b95d41979485ee3 | neutron | | 19c7530debb54eb0bfe6dc47aae3df32 | serverworld | | ddd4329358524a38a69e0dfe3effe87e | cinder | | 99a4af2f51c34fdab3299f660ef1be2d | heat | | 3be7a60d447b46f58769630abac753ae | 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 | +--------------------------------------+--------------+-----------------+----------------------+--------------+ | 1aed7f14-f157-467a-8062-032e1f639c56 | Sample-Stack | CREATE_COMPLETE | 2024-10-11T06:51:01Z | None | +--------------------------------------+--------------+-----------------+----------------------+--------------+[cent@dlp ~(keystone)]$ openstack server list +--------------------------------------+----------------------+---------+-------------------------------------+----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+---------+-------------------------------------+----------------+----------+ | 57e00e0f-5b81-4ca9-9e5f-59e966eeb63f | Heat_Deployed_Server | ACTIVE | private=192.168.100.146 | CentOS-Stream9 | m1.small | | 3d753408-6705-4cbf-acd8-2e09d975b973 | CentOS-St9 | SHUTOFF | private=10.0.0.206, 192.168.100.103 | CentOS-Stream9 | m1.small | +--------------------------------------+----------------------+---------+-------------------------------------+----------------+----------+ |
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