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heat_template_version: 2014-10-16

description: >
  Extra config to add swap space to nodes.

# Parameters passed from the parent template - note if you maintain
# out-of-tree templates they may require additional parameters if the
# in-tree templates add a new role.
parameters:
  servers:
    type: json
  swap_partition_label:
    type: string
    description: Swap partition label
    default: 'swap1'


resources:

  SwapConfig:
    type: OS::Heat::SoftwareConfig
    properties:
      group: script
      config: |
        #!/bin/bash
        set -eux
        swap_partition=$(realpath /dev/disk/by-label/$swap_partition_label)
        swapon $swap_partition
        echo "$swap_partition swap swap defaults 0 0" >> /etc/fstab
      inputs:
        - name: swap_partition_label
          description: Swap partition label
          default: 'swap1'

{% for role in roles %}
  {{role.name}}SwapDeployment:
    type: OS::Heat::SoftwareDeploymentGroup
    properties:
      config: {get_resource: SwapConfig}
      servers: {get_param: servers, {{role.name}}}
      input_values:
        swap_partition_label: {get_param: swap_partition_label}
      actions: ["CREATE"]
{% endfor %}