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heat_template_version: pike
description: Configure hieradata overrides for specific nodes
parameters:
server:
description: ID of the controller node to apply this config to
type: string
# Config specific parameters, to be provided via parameter_defaults
# This would be a lookup of the node UUID as provided by dmidecode
# to the json required for the node-specific hieradata
# Note this needs to be a json blob e.g:
# parameter_defaults:
# NodeDataLookup: |
# {"AB4114B1-9C9D-409A-BEFB-D88C151BF2C3": {"foo": "bar"},
# "8CF1A7EA-7B4B-4433-AC83-17675514B1B8": {"foo2": "bar2"}}
NodeDataLookup:
type: string
default: ''
description: json string containing per-node configuration map
resources:
NodeSpecificConfig:
type: OS::Heat::SoftwareConfig
properties:
group: script
inputs:
- name: node_lookup
config: |
#!/bin/sh
node_id=$(dmidecode --s system-uuid)
# Create a /etc/puppet/hieradata/UUID.json file to provide
# the data of the NodeDataLookup parameter that matches the
# system UUID
echo $node_lookup | python -c "
import json
import sys
input = sys.stdin.readline() or '{}'
cnt = json.loads(input)
print json.dumps(cnt.get('${node_id}', {}))
" > /etc/puppet/hieradata/${node_id}.json
NodeSpecificDeployment:
type: OS::Heat::SoftwareDeployment
properties:
name: NodeSpecificDeployment
config: {get_resource: NodeSpecificConfig}
server: {get_param: server}
input_values:
node_lookup: {get_param: NodeDataLookup}
outputs:
deploy_stdout:
description: Deployment reference, used to trigger puppet apply on changes
value: {get_attr: [NodeSpecificDeployment, deploy_stdout]}
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