OpenStack Xena : How to use Heat2021/11/24 |
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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 | | Open vSwitch | | Libvirt |
| Memcached httpd | | Neutron Server | | Nova Compute |
| Keystone Glance | | OVN-Northd | | Open vSwitch |
| Nova API | | Cinder Volume | | OVN Metadata Agent |
| Cinder API | | iSCSI Target | | OVN-Controller |
| | | Heat API/Engine | | |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] | Deploy Instances with Heat services and templates. The example below is on the Controle Node. |
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[root@dlp ~(keystone)]#
dnf --enablerepo=centos-openstack-xena,powertools,epel -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 | +--------------------------------------+-----------------+--------+ | cfce605e-151b-43dd-b743-2c7988d69e96 | CentOS-Stream-8 | active | +--------------------------------------+-----------------+--------+[root@dlp ~(keystone)]# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 3adf0a70-6446-4095-916d-17d9f753bbe6 | private | 9724f8a3-4c59-4d7d-9838-82bc682a551c | | ac8911e7-afd7-4913-997e-2f0412f1271b | public | 61bf3654-bef1-4ddd-8d23-f2fd41166f4e | +--------------------------------------+---------+--------------------------------------+[root@dlp ~(keystone)]# Int_Net_ID=$(openstack network list | grep private | awk '{ print $2 }')
# create an instance from the template [root@dlp ~(keystone)]# openstack stack create -t sample-stack.yml --parameter "ImageID=CentOS-Stream-8;NetID=$Int_Net_ID" Sample-Stack +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | id | 79d1f2bc-d154-4819-85ce-6a56e7df7105 | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2021-11-24T04:23:03Z | | 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 | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ | 79d1f2bc-d154-4819-85ce-6a56e7df7105 | Sample-Stack | b12f95625664420ca31949963b75b74f | CREATE_COMPLETE | 2021-11-24T04:23:03Z | None | +--------------------------------------+--------------+----------------------------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template [root@dlp ~(keystone)]# openstack server list +--------------------------------------+----------------------+--------+-------------------------+-----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+--------+-------------------------+-----------------+----------+ | 4f2cc892-1289-4692-b0d0-4571fc80aa0e | Heat_Deployed_Server | ACTIVE | private=192.168.100.179 | CentOS-Stream-8 | 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 common users, it needs to change some settings. |
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[root@dlp ~(keystone)]# openstack role list +----------------------------------+------------------+ | ID | Name | +----------------------------------+------------------+ | 18965750e793496289f2adaae0c32dfe | heat_stack_owner | | 2485ff2e98724284a466103b722de47c | reader | | 337ff970af864d6e9eafe2afca9b57b0 | CloudUser | | 7445e68099c44fc98d7569fec6730c2c | admin | | 813db945b1f843b69f06f3a0db335f09 | member | | df5f831d57bf4b3cb40922aa4a64713e | heat_stack_user | +----------------------------------+------------------+[root@dlp ~(keystone)]# openstack project list +----------------------------------+-----------+ | ID | Name | +----------------------------------+-----------+ | 2decda8bcd724687a1cf05064ab21fdf | hiroshima | | 7e53ef14eb894f379ea1929f5defc949 | service | | b12f95625664420ca31949963b75b74f | admin | +----------------------------------+-----------+[root@dlp ~(keystone)]# openstack user list +----------------------------------+-------------------+ | ID | Name | +----------------------------------+-------------------+ | ca311dd55c7f4494bf3fa651ed0737ee | admin | | a6aba3ec75ff4c12ac4813f3324642c4 | glance | | fc1c665468b047b2b23426401c8ee604 | nova | | 2a4ab705034f47c5bfb2c762f3a696d3 | placement | | c6b1d6a496da49ca868d3e13541a42ed | neutron | | 6a517543654044e8b4ea9e0eea0adaa4 | serverworld | | c408ef15d8c3431dbbffd3099199f4d0 | cinder | | 211165f4c3b3488b87047219303997ae | heat | | e1aafd9236684afab49beed259f2d337 | 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
# on th Node Neutron Server is running, change settings for Neutron [root@network ~]# vi /etc/neutron/policy.json # create new # overwrite some settings
{
"create_port:fixed_ips:subnet_id": "",
"create_port:allowed_address_pairs": "",
"create_port:allowed_address_pairs:ip_address": "",
}
[root@network ~]# systemctl restart neutron-server
# that's OK, allowed common users can create stacks [cent@dlp ~(keystone)]$ openstack stack list +--------------------------------------+--------------+-----------------+----------------------+--------------+ | ID | Stack Name | Stack Status | Creation Time | Updated Time | +--------------------------------------+--------------+-----------------+----------------------+--------------+ | 43845e3e-42c9-41f2-9e67-02313212ca32 | Sample-Stack | CREATE_COMPLETE | 2021-11-24T04:27:22Z | None | +--------------------------------------+--------------+-----------------+----------------------+--------------+[cent@dlp ~(keystone)]$ openstack server list +--------------------------------------+----------------------+---------+-------------------------------------+-----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------------------+---------+-------------------------------------+-----------------+----------+ | 626ed011-2914-43c5-b6bf-e49ff5eacd4c | Heat_Deployed_Server | ACTIVE | private=192.168.100.53 | CentOS-Stream-8 | m1.small | | a6180855-77cf-476f-9f26-4fc79baa38c2 | CentOS-St-8 | SHUTOFF | private=10.0.0.250, 192.168.100.108 | CentOS-Stream-8 | m1.small | +--------------------------------------+----------------------+---------+-------------------------------------+-----------------+----------+ |
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