OpenStack Mitaka : How to use Heat
2016/06/08 |
How to use the OpenStack Orchestration Service (Heat).
This example is based on the environment like follows.
| +------------------+ | +------------------------+ | [ Control Node ] | | | [ Network Node ] | | Keystone |10.0.0.30 | 10.0.0.50| DHCP,L3,L2 Agent | | Glance |------------+------------| Metadata Agent | | Nova API |eth0 | eth0| Heat API,API-CFN | | Neutron Server | | | Heat Engine | +------------------+ | +------------------------+ eth0|10.0.0.51 +--------------------+ | [ Compute Node ] | | Nova Compute | | L2 Agent | +--------------------+ |
[1] | Deploy Instances with Heat services and templates. The example below is on the Controle Node. |
heat_template_version: 2016-04-08 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)#
glance image-list +--------------------------------------+------------+ | ID | Name | +--------------------------------------+------------+ | d7e743c4-c1f5-458b-abc5-2d9176c07a93 | Ubuntu1604 | +--------------------------------------+------------+root@dlp ~(keystone)# neutron net-list +--------------------------------------+---------+-------------------------------------------------------+ | id | name | subnets | +--------------------------------------+---------+-------------------------------------------------------+ | 770a1018-973c-43bc-8922-26238b7bcde5 | ext_net | 24bee302-ab35-43fc-b415-3930d1e01902 10.0.0.0/24 | | 4b658dd5-bc91-40d4-8268-c1fa2cfdfff0 | int_net | 3c232880-5aca-42fd-b9f9-a077cf5e6a39 192.168.100.0/24 | +--------------------------------------+---------+-------------------------------------------------------+root@dlp ~(keystone)# Int_Net_ID=`neutron net-list | grep int_net | awk '{ print $2 }'`
# create an instance from the template root@dlp ~(keystone)# heat stack-create -f sample-stack.yml -P "ImageID=Ubuntu1604;NetID=$Int_Net_ID" Sample-Stack +--------------------------------------+--------------+--------------------+---------------------+--------------+ | id | stack_name | stack_status | creation_time | updated_time | +--------------------------------------+--------------+--------------------+---------------------+--------------+ | 5040ab16-54cb-468b-ae4a-0b474a4930ac | Sample-Stack | CREATE_IN_PROGRESS | 2016-06-09T11:28:33 | None | +--------------------------------------+--------------+--------------------+---------------------+--------------+ # turn to "CREATE_COMPLETE" after few minutes later like follows root@dlp ~(keystone)# heat stack-list +--------------------------------------+--------------+-----------------+---------------------+--------------+ | id | stack_name | stack_status | creation_time | updated_time | +--------------------------------------+--------------+-----------------+---------------------+--------------+ | 5040ab16-54cb-468b-ae4a-0b474a4930ac | Sample-Stack | CREATE_COMPLETE | 2016-06-09T11:28:33 | None | +--------------------------------------+--------------+-----------------+---------------------+--------------+ # the instance is running which is created from the Heat template root@dlp ~(keystone)# nova list +----------------+----------------------+---------+------------+-------------+-----------------------------------+ | ID | Name | Status | Task State | Power State | Networks | +----------------+----------------------+---------+------------+-------------+-----------------------------------+ | c6ea1f23-d031- | Heat_Deployed_Server | ACTIVE | - | Running | int_net=192.168.100.4 | | 545457b2-517f- | Ubuntu_1604 | SHUTOFF | - | Shutdown | int_net=192.168.100.3, 10.0.0.201 | +----------------+----------------------+---------+------------+-------------+-----------------------------------+ # delete the instance likwe follows if you don't need root@dlp ~(keystone)# heat stack-delete 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)# heat 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 |