OpenStack Bobcat : How to use Heat2023/10/25 |
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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-bobcat,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 | +--------------------------------------+----------------+--------+ | bcbaa323-2438-4f5e-9473-49f633bb8f9b | CentOS-Stream9 | active | +--------------------------------------+----------------+--------+[root@dlp ~(keystone)]# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 1245127b-0e5c-49c1-8638-de9d51c34949 | private | 88416326-c3b5-4e6f-bf53-71a77c213721 | | 44e70c99-2e15-429b-9dcc-cccaac557c0c | public | fac5715e-35f6-4007-9e8f-edffb2629eeb | +--------------------------------------+---------+--------------------------------------+[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 | 77785ddd-6bdd-4118-87d5-46b7278d2ebd | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2023-10-25T04:19:12Z | | 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 | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ | 77785ddd-6bdd-4118-87d5-46b7278d2ebd | Sample-Stack | d9d13fdc603c42f69a0ea034b64a3cdb | CREATE_COMPLETE | 2023-10-25T04:19:12Z | None | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template [root@dlp ~(keystone)]# openstack server list +--------------------------------------+----------------------+--------+------------------------+----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+--------+------------------------+----------------+----------+ | 1df448f8-ca58-4e8f-b7da-e0f39ae70bc5 | Heat_Deployed_Server | ACTIVE | private=192.168.100.36 | 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 | +----------------------------------+------------------+ | 47337a4ce8bc428a8b39bb8e32ad6a22 | reader | | 6a0da2e6047d4fabb752ef05e628c19d | manager | | 6ae93bec02354a19a18d0cae975034fe | member | | b4b84af37fc34fc78efa5ab4b8595abe | service | | b4ba3b0aa39e4789b3e5ac1100dbbcda | heat_stack_user | | cacd2a524a2b47e1b8c4e4d6906ed2fd | admin | | f24c7e0ee421455895f15f726cd7ca77 | heat_stack_owner | +----------------------------------+------------------+[root@dlp ~(keystone)]# openstack project list +----------------------------------+-----------+ | ID | Name | +----------------------------------+-----------+ | 5d97881520b34e6bbf1f15e778c82fe4 | service | | d9d13fdc603c42f69a0ea034b64a3cdb | admin | | f4598dfd3b8a47149234b6892d18d5a4 | hiroshima | +----------------------------------+-----------+[root@dlp ~(keystone)]# openstack user list +----------------------------------+-------------------+ | ID | Name | +----------------------------------+-------------------+ | f551447b6e4a4593ba4172942385b4d8 | admin | | c5b1b17555cb4865b57936019cc63b1f | glance | | 44499d297d7e4449bbdb63ef6c6013dd | nova | | a4786e29c5f14ccc94a50adc133249bb | placement | | 6800bf9762fd4a5b823dbedf60ec6181 | neutron | | d70a5f7908de4cd9aa8e189b725244a9 | serverworld | | 41a29789f66e4f5787acba22bd4c5490 | cinder | | 77a3c465363a4026857fb7e3895c51d4 | heat | | febc43063411454fb9c2c4e77f82b220 | 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 | +--------------------------------------+--------------+-----------------+----------------------+--------------+ | 7451c26c-1517-4343-b274-1fd883b29a68 | Sample-Stack | CREATE_COMPLETE | 2023-10-25T04:23:22Z | None | +--------------------------------------+--------------+-----------------+----------------------+--------------+[cent@dlp ~(keystone)]$ openstack server list +--------------------------------------+----------------------+---------+------------------------------------+----------------+-----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+---------+------------------------------------+----------------+-----------+ | b655b78b-935f-4891-b72b-5287ab7daebf | Heat_Deployed_Server | ACTIVE | private=192.168.100.60 | CentOS-Stream9 | m1.small | | 78b8c394-be14-4312-84e8-06eeebbd74f3 | CentOS-St9 | SHUTOFF | private=10.0.0.208, 192.168.100.63 | CentOS-Stream9 | m1.medium | +--------------------------------------+----------------------+---------+------------------------------------+----------------+-----------+ |
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