heat_template_version: 2013-05-23

description: >
  This template will boot a Kubernetes cluster with one or more
  minions (as specified by the number_of_minions parameter, which
  defaults to "2").

parameters:

  #
  # REQUIRED PARAMETERS
  #
  key_name:
    type: string
    description: name of ssh key to be provisioned on our server
  public_net_id:
    type: string
    description: uuid of a network to use for floating ip addresses
  private_net_id:
    type: string
    description: uuid of a network to use for floating ip addresses
  private_subnet_id:
    type: string
    description: uuid of a network to use for floating ip addresses

  #
  # OPTIONAL PARAMETERS
  #
  image:
    type: string
    default: centos7
    description: glance image used to boot the server

  flavor:
    type: string
    default: m1.small
    description: flavor to use when booting the server

  dns_nameserver:
    type: string
    description: address of a dns nameserver reachable in your environment
    default: 8.8.8.8

  number_of_compute_nodes:
    type: string
    description: how many compute nodes to spawn
    default: 10

resources:

  master_wait_handle:
    type: "AWS::CloudFormation::WaitConditionHandle"

  master_wait_condition:
    type: "AWS::CloudFormation::WaitCondition"
    depends_on:
      - master_node
    properties:
      Handle:
        get_resource: master_wait_handle
      Timeout: "300"

  ######################################################################
  #
  # network resources.  allocate a network and router for our server.
  # it would also be possible to take advantage of existing network
  # resources (and have the deployer provide network and subnet ids,
  # etc, as parameters), but I wanted to minmize the amount of
  # configuration necessary to make this go.
  #fixed_net:
  #  type: "OS::Neutron::Net"

  # This is the subnet on which we will deploy our server.
  #fixed_subnet:
  #  type: "OS::Neutron::Subnet"
  #  properties:
  #    cidr: 10.0.9.0/24
  #    network_id: { get_param: private_net_id }
  #    dns_nameservers: { get_param: dns_nameserver }

  # create a router attached to the external network provided as a
  # parameter to this stack.
  #extrouter:
  #  type: "OS::Neutron::Router"
  #  properties:
  #    external_gateway_info:
  #      network:
  #        get_param: public_net_id

  # attached fixed_subnet to our extrouter router.
  #extrouter_inside:
  #  type: "OS::Neutron::RouterInterface"
  #  properties:
  #    router_id:
  #      get_resource: extrouter
  #    subnet_id:
  #      get_param:
  #        private_subnet_id

  ######################################################################
  #
  # security groups.  we need to permit network traffic of various
  # sorts.
  #

  secgroup_base:
    type: "OS::Neutron::SecurityGroup"
    properties:
      rules:
        - protocol: icmp
        - protocol: tcp
          port_range_min: 22
          port_range_max: 22

  secgroup_compute:
    type: "OS::Neutron::SecurityGroup"
    properties:
      rules:
        - protocol: tcp
          port_range_min: 22
          port_range_max: 22
        - protocol: tcp
          port_range_min: 4001
          port_range_max: 4001

  ######################################################################
  #
  # databases server.  this sets up a MySQL server
  #
  master_node:
    type: "OS::Nova::Server"
    #depends_on:
    #  - extrouter_inside
    properties:
      image:
        get_param: image
      flavor:
        get_param: flavor
      key_name:
        get_param: key_name
      user_data_format: RAW
      user_data:
        str_replace:
          template: |
            #!/bin/sh

            set -ax

            yum -y upgrade

            cat > /tmp/wait-data << EOF
            {
              "Status" : "SUCCESS",
              "Reason" : "Setup Complete",
              "UniqueId" : "None",
              "Data" : "OK"
            }
            EOF
            curl -T /tmp/wait-data '$WAIT_HANDLE'

            echo $COMP_NODE_ADDRESSES

          params:
            "$COMP_NODE_ADDRESSES": {"Fn::Join": [",", {get_attr: [compute_nodes, compute_node_ip]}]}
            "$WAIT_HANDLE":
              get_resource: master_wait_handle
      networks:
        - port:
            get_resource: master_node_eth0

  master_node_eth0:
    type: "OS::Neutron::Port"
    properties:
      network_id:
        get_param: private_net_id
      security_groups:
        - get_resource: secgroup_base
        - get_resource: secgroup_compute
      fixed_ips:
        - subnet_id:
            get_param: private_subnet_id

  master_node_floating:
    type: "OS::Neutron::FloatingIP"
    #depends_on:
    #  - extrouter_inside
    properties:
      floating_network_id:
        get_param: public_net_id
      port_id:
        get_resource: master_node_eth0

  compute_nodes:
    type: "OS::Heat::ResourceGroup"
    #depends_on:
    #  - extrouter_inside
    properties:
      count: {get_param: number_of_compute_nodes}
      resource_def:
        type: compute_node.yaml
        properties:
          index_name: "%index%"
          key_name: {get_param: key_name}
          image: {get_param: image}
          flavor: {get_param: flavor}
          private_net_id: {get_param: private_net_id}
          private_subnet_id: {get_param: private_subnet_id}
          public_net_id: {get_param: public_net_id}
          master_node_ip: {get_attr: [master_node_eth0, fixed_ips, 0, ip_address]}

outputs:

  master_node:
    value: {get_attr: [master_node_floating, floating_ip_address]}

  compute_nodes:
    value: {get_attr: [compute_nodes, compute_node_ip]}

  compute_node_external:
    value: {get_attr: [compute_nodes, compute_node_external_ip]}