OpenStack Queens : How to use Heat2018/03/15 |
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How to use the OpenStack Orchestration Service (Heat).
This example is based on the emvironment 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 | | L2 Agent | | Libvirt |
| Memcached httpd | | L3 Agent | | Nova Compute |
| Keystone Glance | | Metadata Agent | | L2 Agent |
| Nova API | | Cinder-Volume | | |
| Neutron Server | | Heat API | | |
| Metadata Agent | | Heat Engine | | |
| Cinder API | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
|
| [1] | Deploy Instances with Heat services and templates. The example below is on the Controle Node. |
heat_template_version: 2018-03-02
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 | +--------------------------------------+------------+--------+ | 217a694d-e526-4921-a018-6b1e6874ef44 | Ubuntu1604 | active | +--------------------------------------+------------+--------+root@dlp ~(keystone)# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 13a8c6d1-bb29-4aa1-b698-31630852cb87 | ext_net | 655fa742-2e84-4539-8d15-c008f1e4331e | | 40e03738-cd4b-49b4-9e64-fabcaac64dd5 | int_net | 9fdf51fe-31a9-4f89-8e33-6e3c00a37002 | +--------------------------------------+---------+--------------------------------------+root@dlp ~(keystone)# Int_Net_ID=$(openstack network list | grep int_net | awk '{ print $2 }')
# create an instance from the template root@dlp ~(keystone)# openstack stack create -t sample-stack.yml --parameter "ImageID=Ubuntu1604;NetID=$Int_Net_ID" Sample-Stack +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | id | 60464a2b-1a9b-41fe-9543-ebab2e89782c | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2018-03-15T14:26:37Z | | 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 | +-----------+--------------+--------------+-----------------+----------------------+--------------+ | 60464a... | Sample-Stack | 1ab4e37f2... | CREATE_COMPLETE | 2018-03-15T14:26:37Z | None | +-----------+--------------+--------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template root@dlp ~(keystone)# openstack server list +-----------+----------------------+--------+-----------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +-----------+----------------------+--------+-----------------------+------------+----------+ | 2c4c9d52- | Heat_Deployed_Server | ACTIVE | int_net=192.168.100.5 | Ubuntu1604 | m1.small | +-----------+----------------------+--------+-----------------------+------------+----------+ # delete the instance likwe follows if you don't need 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.
⇒ http://docs.openstack.org/developer/heat/template_guide/index.html |
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