作者：Maxwell Li
日期：2016/12/20
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In environments that include the Orchestration service, you can create a stack that launches an instance.
Create a template
The Orchestration service uses templates to describe stacks. To learn about the template language, see the Template Guide in the Heat developer documentation.
Create the admin-template.yml file with the following content.
heat_template_version: 2015-10-15
description: Launch a basic instance with CirrOS image using the
``m1.tiny`` flavor, ``heat_key`` key, and one network.
parameters:
NetID:
type: string
description: Network ID to use for the instance.
resources:
server:
type: OS::Nova::Server
properties:
image: cirros
flavor: m1.tiny
key_name: heat_key
networks:
- network: { get_param: NetID }
outputs:
instance_name:
description: Name of the instance.
value: { get_attr: [ server, name ] }
instance_ip:
description: IP address of the instance.
value: { get_attr: [ server, first_address ] }
Preparing to create a stack
1. Source the admin credentials.
$ source /opt/admin-openrc.sh
2. Download the source image.
$ wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img
3. Upload the image to the Image service using the QCOW2 disk format, bare container format, and public visibility so all projects can access it.
$ glance image-create --name "cirros" \
--file cirros-0.3.4-x86_64-disk.img \
--disk-format qcow2 --container-format bare
4. Confirm upload of the image and validate attributes
$ openstack image list
+--------------------------------------+--------+
| ID | Name |
+--------------------------------------+--------+
| 2b69f73b-000c-493d-bcb9-ab18b32fdc8d | cirros |
+--------------------------------------+--------+
5. Create the different flavors.
$ openstack flavor create --id 0 --vcpus 1 --ram 64 --disk 1 m1.nano
$ openstack flavor create --id 1 --vcpus 1 --ram 512 --disk 1 m1.tiny
$ openstack flavor create --id 2 --vcpus 1 --ram 2048 --disk 20 m1.small
$ openstack flavor create --id 3 --vcpus 2 --ram 4096 --disk 40 m1.medium
$ openstack flavor create --id 4 --vcpus 4 --ram 8192 --disk 80 m1.large
$ openstack flavor create --id 5 --vcpus 8 --ram 16384 --disk 160 m1.xlarge
6. Your cloud will have different flavors and images available for launching instances, you can discover what is available by running.
$ openstack flavor list
+----+-----------+-------+------+-----------+-------+-----------+
| ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public |
+----+-----------+-------+------+-----------+-------+-----------+
| 0 | m1.nano | 64 | 1 | 0 | 1 | True |
| 1 | m1.tiny | 512 | 1 | 0 | 1 | True |
| 2 | m1.small | 2048 | 20 | 0 | 1 | True |
| 3 | m1.medium | 4096 | 40 | 0 | 2 | True |
| 4 | m1.large | 8192 | 80 | 0 | 4 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | 8 | True |
+----+-----------+-------+------+-----------+-------+-----------+
7. To allow you to SSH into instances launched by Heat, a keypair will be generated:
$ openstack keypair create heat_key > heat_key.priv
$ chmod 600 heat_key.priv
Create a stack
Create a stack using the admin-template.yml template.
1. Determine available networks.
$ openstack network list
+--------------------------------------+---------+--------------------------------------+
| ID | Name | Subnets |
+--------------------------------------+---------+--------------------------------------+
| 5314b101-d2cd-4082-a798-f70610d43d96 | ext-net | 6b9dc3eb-7989-46b9-aa66-7c28d3bcf606 |
+--------------------------------------+---------+--------------------------------------+
2. Set the NET_ID environment variable to reflect the ID of a network. For example, using the provider network.
$ export NET_ID=$(openstack network list | awk '/ ext-net / { print $2 }')
3. Create a stack of one CirrOS instance on the ext-net network.
$ openstack stack create -t admin-template.yml --parameter "NetID=$NET_ID" stack
+---------------------+----------------------------------------------------------------------------+
| Field | Value |
+---------------------+----------------------------------------------------------------------------+
| id | d19fe979-675b-4197-83f5-e24919e7f011 |
| stack_name | stack |
| description | Launch a basic instance with CirrOS image using the ``m1.tiny`` flavor, |
| | ``heat_key`` key, and one network. |
| creation_time | 2016-11-17T07:39:52Z |
| updated_time | None |
| stack_status | CREATE_IN_PROGRESS |
| stack_status_reason | Stack CREATE started |
+---------------------+----------------------------------------------------------------------------+
Note: After a few seconds, the stack_status should change from IN_PROGRESS to CREATE_COMPLETE.
4. After a short time, verify successful creation of the stack.
$ openstack stack list
+-------------------------+------------+-----------------+----------------------+--------------+
| ID | Stack Name | Stack Status | Creation Time | Updated Time |
+-------------------------+------------+-----------------+----------------------+--------------+
| d19fe979-675b-4197-83f5 | stack | CREATE_COMPLETE | 2016-11-17T07:39:52Z | None |
| -e24919e7f011 | | | | |
+-------------------------+------------+-----------------+----------------------+--------------+
5. Show the name and IP address of the instance and compare with the output of the OpenStack client:
$ openstack stack output show --all stack
+---------------+-------------------------------------------------+
| Field | Value |
+---------------+-------------------------------------------------+
| instance_name | { |
| | "output_value": "stack-server-oqjxndmd5dk3", |
| | "output_key": "instance_name", |
| | "description": "Name of the instance." |
| | } |
| instance_ip | { |
| | "output_value": "192.168.116.233", |
| | "output_key": "instance_ip", |
| | "description": "IP address of the instance." |
| | } |
+---------------+-------------------------------------------------+
$ openstack server list
+------------------------+------------------------+--------+-------------------------+------------+
| ID | Name | Status | Networks | Image Name |
+------------------------+------------------------+--------+-------------------------+------------+
| 144c9222-dd87-4ca0 | stack-server- | ACTIVE | ext-net=192.168.116.233 | cirros |
| -899a-051c7fff79eb | oqjxndmd5dk3 | | | |
+------------------------+------------------------+--------+-------------------------+------------+
Delete the stack.
$ openstack stack delete --yes stack
Note: The list operation will show no running stack.:
You can explore other heat commands by referring to theHeat chapter of the OpenStack Command-Line Interface Reference then read the Template Guide and start authoring your own templates.
