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OpenStack Ocata : How to use Heat
2017/03/18 |
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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 | | Open vSwitch | | Libvirt |
| Memcached httpd | | L2,L3,Metadata Agent | | Nova Compute |
| Keystone Glance | | Heat API API-CFN | | L2 Agent |
| Nova API | | Heat Engine | | |
| Neutron Server | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
|
| [1] | Deploy Instances with Heat services and templates. The example below is on the Controle Node. |
heat_template_version: 2017-02-24
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 | +--------------------------------------+--------------+--------+ | 94b334bf-178f-46b2-ac6f-4e49de6442a1 | Ubuntu1604 | active | +--------------------------------------+--------------+--------+root@dlp ~(keystone)# openstack network list +---------------------------------+---------+----------------------------------+ | ID | Name | Subnets | +---------------------------------+---------+----------------------------------+ | 6897f95e-eb43-4041-a22a- | int_net | 2cff7f3d-6e5c-49be- | | 6b2f417d3bc5 | | ba88-e930c8090864 | | add5e0b3-f838-41ec-a14c- | ext_net | 161a0667-f2ae-4962-b969-2c391729 | | 184f0442d6b3 | | 004f | +---------------------------------+---------+----------------------------------+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 | 61b932ac-4865-486f-9d3f-7270e912a0cf | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2017-03-20T01:50:59Z | | 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 | Stack Status | Creation Time | Updated Time | +---------------+--------------+---------------+----------------+--------------+ | 61b932ac-4865 | Sample-Stack | CREATE_COMPLE | 2017-03-20T01: | None | | -486f-9d3f- | | TE | 50:59Z | | | 7270e912a0cf | | | | | +---------------+--------------+---------------+----------------+--------------+ # the instance is running which is created from the Heat template root@dlp ~(keystone)# openstack server list +-----------------+-----------------+---------+-------------------+------------+ | ID | Name | Status | Networks | Image Name | +-----------------+-----------------+---------+-------------------+------------+ | e68f5fd4-958e-4 | Heat_Deployed_S | ACTIVE | int_net=192.168.1 | Ubuntu1604 | | 348-8b25-bbad6a | erver | | 00.4 | | | 30a077 | | | | | | 9b506f0f-4c3b-4 | Ubuntu_1604 | SHUTOFF | int_net=192.168.1 | Ubuntu1604 | | 58b-9213-17de1c | | | 00.6, 10.0.0.203 | | | 4da03c | | | | | +-----------------+-----------------+---------+-------------------+------------+ # delete the instance likwe follows if you don't need root@dlp ~(keystone)# openstack stack delete --yes Sample-Stack Are you sure you want to delete this stack(s) [y/N]? y +--------------------------------------+--------------+-----------------+---------------------+--------------+ | id | stack_name | stack_status | creation_time | updated_time | +--------------------------------------+--------------+-----------------+---------------------+--------------+ | 5040ab16-54cb-468b-ae4a-0b474a4930ac | Sample-Stack | CREATE_COMPLETE | 2016-06-09T11:28:33 | None | +--------------------------------------+--------------+-----------------+---------------------+--------------+root@dlp ~(keystone)# openstack stack list +----+------------+--------------+---------------+ | id | stack_name | stack_status | creation_time | +----+------------+--------------+---------------+ +----+------------+--------------+---------------+ |
| [2] |
The guide for writing templates are opened on the official site below.
⇒ http://docs.openstack.org/developer/heat/template_guide/index.html |