OpenStack Pike : How to use Heat
2017/09/18 |
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: 2017-09-01 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 | +--------------------------------------+------------+--------+ | 1f46b995-47e3-4858-b0b0-9221867462cc | Ubuntu1604 | active | +--------------------------------------+------------+--------+root@dlp ~(keystone)# openstack network list +--------------------------------------+---------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------+ | 5adc2598-4ebe-4110-b6bf-47d9e2b5c48e | ext_net | 6572863d-f10a-456e-932c-2581d39a3349 | | fcfcf86c-40a6-4c79-9431-feb74dc5a6bc | int_net | 65e69dd1-0b8c-43d7-9c44-b8099a2e0f82 | +--------------------------------------+---------+--------------------------------------+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 | f704dddd-7f9e-498f-a4fc-99997f350faa | | stack_name | Sample-Stack | | description | Heat Sample Template | | creation_time | 2017-09-20T04:09:59Z | | 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 | Project | Stack Status | Creation Time | Updated Time | +-----------+--------------+----------------+-----------------+----------------------+--------------+ | f704dddd- | Sample-Stack | 1ca37b956ae... | CREATE_COMPLETE | 2017-09-20T04:09:59Z | None | +-----------+--------------+----------------+-----------------+----------------------+--------------+ # the instance is running which is created from the Heat template root@dlp ~(keystone)# openstack server list +-----------+----------------------+---------+------------------------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +-----------+----------------------+---------+------------------------------------+------------+----------+ | 99c7a965- | Heat_Deployed_Server | ACTIVE | int_net=192.168.100.6 | Ubuntu1604 | m1.small | | f5ae3046- | Ubuntu_1604 | SHUTOFF | int_net=192.168.100.10, 10.0.0.210 | 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 +----+------------+--------------+---------------+ | 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 |