84 lines
3.0 KiB
YAML
84 lines
3.0 KiB
YAML
heat_template_version: rocky
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description: Configure hieradata overrides for specific nodes
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parameters:
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server:
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description: ID of the controller node to apply this config to
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type: string
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# Config specific parameters, to be provided via parameter_defaults
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# This would be a lookup of the node UUID as provided by dmidecode
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# to the json required for the node-specific hieradata
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# Note this needs to be a json blob e.g:
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# parameter_defaults:
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# NodeDataLookup:
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# {"AB4114B1-9C9D-409A-BEFB-D88C151BF2C3": {"foo": "bar"},
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# "8CF1A7EA-7B4B-4433-AC83-17675514B1B8": {"foo2": "bar2"}}
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NodeDataLookup:
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type: json
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default: {}
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description: json containing per-node configuration map
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resources:
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NodeSpecificConfig:
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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: node_lookup
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config: |
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#!/bin/sh
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node_id=$(dmidecode --s system-uuid | awk 'match($0, \
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/[0-9A-Fa-f]{8}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{12}/) \
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{ print substr($0, RSTART, RLENGTH) }' | tr '[:upper:]' '[:lower:]')
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# thanks to dmidecode 3.1, we have to handle both the upper case
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# and lower case versions of the UUID from dmidecode. LP#1816652
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# upper for dmidecode < 3.1 and lower for dmidecode >= 3.1
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node_id_upper=$(echo $node_id | tr '[:lower:]' '[:upper:]')
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# needed to handle where python lives
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function get_python() {
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command -v python3 || command -v python2 || command -v python || exit 1
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}
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# Create a /etc/puppet/hieradata/UUID.json file to provide
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# the data of the NodeDataLookup parameter that matches the
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# system UUID
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echo $node_lookup | $(get_python) -c "
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import ast
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import json
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import sys
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input = sys.stdin.readline() or '{}'
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try:
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cnt = json.loads(input)
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except json.decoder.JSONDecodeError:
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cnt = ast.literal_eval(input)
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print(json.dumps(cnt.get('${node_id}', {})))
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" > /etc/puppet/hieradata/${node_id}.json
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# handle upper case node id LP#1816652
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echo $node_lookup | $(get_python) -c "
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import ast
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import json
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import sys
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input = sys.stdin.readline() or '{}'
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try:
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cnt = json.loads(input)
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except json.decoder.JSONDecodeError:
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cnt = ast.literal_eval(input)
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print(json.dumps(cnt.get('${node_id_upper}', {})))
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" > /etc/puppet/hieradata/${node_id_upper}.json
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NodeSpecificDeployment:
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type: OS::Heat::SoftwareDeployment
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properties:
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name: NodeSpecificDeployment
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config: {get_resource: NodeSpecificConfig}
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server: {get_param: server}
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input_values:
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node_lookup: {get_param: NodeDataLookup}
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outputs:
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deploy_stdout:
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description: Deployment reference, used to trigger puppet apply on changes
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value: {get_attr: [NodeSpecificDeployment, deploy_stdout]}
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