Difference between revisions of "Heat Mistral resources usage examples"
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=== 1. Create workflow template file nova_actions.yaml . This workflow allows to create nova server. === | === 1. Create workflow template file nova_actions.yaml . This workflow allows to create nova server. === | ||
| − | --- | + | --- |
| − | version: '2.0' | + | version: '2.0' |
| − | create_vm: | + | create_vm: |
| − | + | type: direct | |
| − | + | input: | |
| − | + | - vm_name | |
| − | + | - image_ref | |
| − | + | - flavor_ref | |
| − | + | output: | |
| − | + | vm_id: $.vm_id | |
| − | + | tasks: | |
| − | + | create_server: | |
| − | + | action: nova.servers_create name={$.vm_name} image={$.image_ref} flavor={$.flavor_ref} | |
| − | + | publish: | |
| − | + | vm_id: $.id | |
| − | + | on-success: | |
| − | + | - check_server_exists | |
| − | + | check_server_exists: | |
| − | + | action: nova.servers_get server={$.vm_id} | |
| − | + | publish: | |
| − | + | server_exists: True | |
| − | + | on-success: | |
| − | + | - wait_instance | |
| − | + | wait_instance: | |
| − | + | action: nova.servers_find id={$.vm_id} status='ACTIVE' | |
| − | + | policies: | |
| − | + | retry: | |
| − | + | delay: 5 | |
| − | + | count: 15 | |
| − | |||
=== 2. Create template with OS::Mistral::Workflow and OS::Mistral::CronTrigger resources (template.yaml). === | === 2. Create template with OS::Mistral::Workflow and OS::Mistral::CronTrigger resources (template.yaml). === | ||
Revision as of 08:50, 26 February 2015
Case 1: Creating resources using Heat template and check that they are available in Mistral service.
1. Create workflow template file nova_actions.yaml . This workflow allows to create nova server.
---
version: '2.0'
create_vm:
type: direct
input:
- vm_name
- image_ref
- flavor_ref
output:
vm_id: $.vm_id
tasks:
create_server:
action: nova.servers_create name={$.vm_name} image={$.image_ref} flavor={$.flavor_ref}
publish:
vm_id: $.id
on-success:
- check_server_exists
check_server_exists:
action: nova.servers_get server={$.vm_id}
publish:
server_exists: True
on-success:
- wait_instance
wait_instance:
action: nova.servers_find id={$.vm_id} status='ACTIVE'
policies:
retry:
delay: 5
count: 15
2. Create template with OS::Mistral::Workflow and OS::Mistral::CronTrigger resources (template.yaml).
heat_template_version: 2013-05-23 parameters:
cron_pattern: type: string default: '54 15 25 * *'
resources:
workflow:
type: OS::Mistral::Workflow
properties:
definition: { get_file: nova_actions.yaml }
input: {"vm_name": "test_vm", "image_ref": "64200b6e-9c5e-46d7-a373-676e1335eb24", "flavor_ref": "84"}
trigger:
type: OS::Mistral::CronTrigger
properties:
pattern: { get_param: cron_pattern }
workflow: { get_attr: [workflow, available_workflows, create_vm] }
outputs:
execution_time:
value: { get_attr: [trigger, next_execution_time] }
3. Create stack.
heat stack-create test1 -f template.yaml
4. Check that resources were created in Mistral.
mistral workflow-list
+--------------------------+--------+------------------------------+---------------------+------------+ | Name | Tags | Input | Created at | Updated at | +--------------------------+--------+------------------------------+---------------------+------------+ | std.create_instance | <none> | name, image_id, flavor_id... | 2015-01-26 00:00:49 | None | | std.delete_instance | <none> | instance_id | 2015-01-26 00:00:49 | None | | test1.workflow.create_vm | <none> | vm_name, image_ref, flavo... | 2015-01-26 22:04:12 | None | +--------------------------+--------+------------------------------+---------------------+------------+
mistral cron-trigger-list
+----------------------------+--------------+--------------------------+---------------------+---------------------+------------+ | Name | Pattern | Workflow | Next execution time | Created at | Updated at | +----------------------------+--------------+--------------------------+---------------------+---------------------+------------+ | test1-trigger-kqetnotnmvsx | 54 15 25 * * | test1.workflow.create_vm | 2015-02-25 15:54:00 | 2015-01-26 22:04:25 | None | +----------------------------+--------------+--------------------------+---------------------+---------------------+------------+
