coreos-heat.yaml

heat_template_version: 2014-10-16

description: Deploy a CoreOS cluster

parameters:
  count:
    description: Number of CoreOS machines to deploy
    type: number
    default: 3
    constraints:
    - range:
        min: 1
        max: 10
      description: Must be between 1 and 10 servers.
  key_name:
    type: string
    description: Name of key-pair to be used for compute instance
  flavor:
    type: string
    default: dc1.1x1.20
    constraints:
    - allowed_values:
      - dc1.1x1.20
      - dc1.1x2.20
      - dc1.2x2.40
      - dc1.2x4.40
      - dc1.2x8.40
      - dc1.4x16
      - dc1.8x16
      description: |
        Must be a valid DataCentred Compute Cloud flavour
  image_id:
    type: string
    label: CoreOS image ID
    default: 9d8d2945-e699-469a-ac24-c63885f621ca
  public_net_id:
    type: string
    label: Public network ID
    description: ID of the public network to use
  discovery_url:
    type: string
    label: Cluster discovery URL such as one generated from https://discovery.etcd.io/new
  name:
    type: string
    description: Name of each CoreOS machine booted
    default: CoreOS-stable

resources:
  security_group:
    type: OS::Neutron::SecurityGroup
    properties:
      description: Security Group
      name: core-security-group
      rules:
        - remote_ip_prefix: 0.0.0.0/0
          protocol: tcp
          port_range_min: 0
          port_range_max: 65535
        - remote_ip_prefix: 0.0.0.0/0
          protocol: udp
          port_range_min: 0
          port_range_max: 65535
        - remote_ip_prefix: 0.0.0.0/0
          protocol: icmp
  private_net:
    type: OS::Neutron::Net
    properties:
      admin_state_up: true
      name: core-net
  private_subnet:
    type: OS::Neutron::Subnet
    properties:
      name: core-subnet
      cidr: 192.168.10.0/24
      gateway_ip: 192.168.10.1
      allocation_pools:
        - start: 192.168.10.20
          end: 192.168.10.99
      dns_nameservers: [8.8.8.8, 8.8.4.4]
      enable_dhcp: true
      network_id: { get_resource: private_net }
  router:
    type: OS::Neutron::Router
    properties:
      name: core-router
      admin_state_up: true
  router_gw:
    type: OS::Neutron::RouterGateway
    properties:
      network_id: { get_param: public_net_id }
      router_id: { get_resource: router }
  router_interface:
    type: OS::Neutron::RouterInterface
    properties:
      router_id: { get_resource: router }
      subnet_id: { get_resource: private_subnet }

  machines:
    type: "OS::Heat::ResourceGroup"
    depends_on: private_net
    properties:
      count: { get_param: count }
      resource_def:
        type: OS::Nova::Server
        properties:
          key_name: { get_param: key_name }
          image: { get_param: image_id }
          networks:
              - network: { get_resource: private_net }
          flavor: { get_param: flavor }
          name:
            str_replace:
              template:
                $name-$index
              params:
                $name: { get_param: name }
                $index: "%index%"
          user_data_format: RAW
          user_data:
            str_replace:
              template: |
                #cloud-config
                coreos:
                  etcd:
                    discovery: $discovery_url$
                    # multi-region and multi-cloud deployments need to use $public_ipv4
                    addr: $private_ipv4:4001
                    peer-addr: $private_ipv4:7001
                  units:
                    - name: etcd.service
                      command: start
                    - name: fleet.service
                      command: start
              params:
                $discovery_url$: { get_param: discovery_url }

outputs:
  key_pair:
    description: SSH key-pair for this cluster
    value: { get_param: key_name }

$ heat stack-create -f coreos-heat.yaml \
-P key_name=deadline \
-P public_net_id=6751cb30-0aef-4d7e-94c3-ee2a09e705eb \
-P discovery_url=$(curl -sw "\n" 'https://discovery.etcd.io/new?size=3') \
-P name=webserver coreos