196e6f3ff6
Adds hook to enable additional "AllNodes" config to be performed prior to applying puppet - this is useful when you need to build configuration data which requires knowledge of all nodes in a cluster, or of the entire deployment. As an example, there is a sample config template which collects the hostname and mac addresses for all nodes in the deployment then writes the data to all Controller nodes. Something similar to this may be required to enable creation of the nexus_config in https://review.openstack.org/#/c/198754/ There's also another, simpler, example which shows how you could share the output of an OS::Heat::RandomString between nodes. Change-Id: I8342a238f50142d8c7426f2b96f4ef1635775509
64 lines
1.8 KiB
YAML
64 lines
1.8 KiB
YAML
heat_template_version: 2014-10-16
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description: >
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Example extra config for cluster config
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this example deploys a random string to all controller and compute
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nodes, showing how data may be shared amongst nodes, vs the
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other ExtraConfig interfaces which act only on individual nodes.
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# Parameters passed from the parent template - note if you maintain
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# out-of-tree templates they may require additional parameters if the
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# in-tree templates add a new role.
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parameters:
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controller_servers:
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type: json
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compute_servers:
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type: json
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blockstorage_servers:
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type: json
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objectstorage_servers:
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type: json
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cephstorage_servers:
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type: json
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# Note extra parameters can be defined, then passed data via the
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# environment parameter_defaults, without modifying the parent template
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resources:
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Random:
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type: OS::Heat::RandomString
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RandomConfig:
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type: OS::Heat::SoftwareConfig
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properties:
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group: script
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inputs:
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- name: random_value
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config: |
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#!/bin/sh
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echo $random_value > /root/random_value
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RandomDeploymentsController:
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type: OS::Heat::SoftwareDeployments
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properties:
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servers: {get_param: controller_servers}
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config: {get_resource: RandomConfig}
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actions: ['CREATE'] # Only do this on CREATE
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input_values:
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random_value: {get_attr: [Random, value]}
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RandomDeploymentsCompute:
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type: OS::Heat::SoftwareDeployments
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properties:
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servers: {get_param: compute_servers}
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config: {get_resource: RandomConfig}
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actions: ['CREATE'] # Only do this on CREATE
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input_values:
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random_value: {get_attr: [Random, value]}
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outputs:
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# This value should change if the configuration data has changed
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# It is used to e.g re-apply puppet after hieradata values change.
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config_identifier:
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value: {get_attr: [Random, value]}
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