OpenStack Liberty : How to use Heat2015/11/19 |
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: 2014-10-16 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)]#
glance image-list +--------------------------------------+---------+ | ID | Name | +--------------------------------------+---------+ | 34beed31-2971-43f0-9c5a-d39d3df1d501 | CentOS7 | +--------------------------------------+---------+[root@dlp ~(keystone)]# neutron net-list +--------------------------------------+------------+--------------------------------------------------+ | id | name | subnets | +--------------------------------------+------------+--------------------------------------------------+ | 1ccd61ea-f82b-42a8-bc2e-03b9c38c62c7 | sharednet1 | 641dcbd3-1eb2-45ab-b8af-4fccf009c226 10.0.0.0/24 | +--------------------------------------+------------+--------------------------------------------------+[root@dlp ~(keystone)]# Int_Net_ID=`neutron net-list | grep sharednet1 | awk '{ print $2 }'`
# create an instance from the template [root@dlp ~(keystone)]# heat stack-create -f sample-stack.yml -P "ImageID=CentOS7;NetID=$Int_Net_ID" Sample-Stack +--------------------------------------+--------------+--------------------+---------------------+--------------+ | id | stack_name | stack_status | creation_time | updated_time | +--------------------------------------+--------------+--------------------+---------------------+--------------+ | 896d7443-65b9-4855-9ca9-60317fca5c9c | Sample-Stack | CREATE_IN_PROGRESS | 2015-11-19T12:21:18 | 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 | +--------------------------------------+--------------+-----------------+---------------------+--------------+ | 896d7443-65b9-4855-9ca9-60317fca5c9c | Sample-Stack | CREATE_COMPLETE | 2015-11-19T12:21:18 | 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 | +-----------+----------------------+---------+------------+-------------+-----------------------+ | 74a217fa- | CentOS_7 | SHUTOFF | - | Shutdown | sharednet1=10.0.0.202 | | 945b1446- | Heat_Deployed_Server | ACTIVE | - | Running | sharednet1=10.0.0.215 | +-----------+----------------------+---------+------------+-------------+-----------------------+ # delete the instance likwe follows if you don't need [root@dlp ~(keystone)]# heat stack-delete Sample-Stack +-----------+--------------+-----------------+---------------------+--------------+ | id | stack_name | stack_status | creation_time | updated_time | +-----------+--------------+-----------------+---------------------+--------------+ | 896d7443- | Sample-Stack | CREATE_COMPLETE | 2015-11-19T12:21:18 | 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 |
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