heat_template_version: 2013-05-23

description: >
  This is a nested stack that defines a single Kubernetes master, This stack is
  included by an ResourceGroup resource in the parent template
  (kubecluster.yaml).

parameters:

  server_image:
    type: string
    description: glance image used to boot the server

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

  ssh_key_name:
    type: string
    description: name of ssh key to be provisioned on our server
    default: lars

  external_network:
    type: string
    description: uuid/name of a network to use for floating ip addresses

  portal_network_cidr:
    type: string
    description: >
      address range used by kubernetes for service portals
    default: 10.254.0.0/16

  kube_allow_priv:
    type: string
    description: >
      whether or not kubernetes should permit privileged containers.
    default: "false"
    constraints:
      - allowed_values: ["true", "false"]

  flannel_network_cidr:
    type: string
    description: network range for flannel overlay network
    default: 10.100.0.0/16

  flannel_network_subnetlen:
    type: string
    description: size of subnet assigned to each master
    default: 24

  flannel_backend:
    type: string
    description: >
      specify the backend for flannel, default udp backend
    constraints:
      - allowed_values: ["udp", "vxlan", "host-gw"]

  discovery_url:
    type: string
    description: >
      Discovery URL used for bootstrapping the etcd cluster.

  tls_disabled:
    type: boolean
    description: whether or not to enable TLS
    default: False

  kubernetes_port:
    type: number
    description: >
      The port which are used by kube-apiserver to provide Kubernetes
      service.
    default: 6443

  bay_uuid:
    type: string
    description: identifier for the bay this template is generating

  magnum_url:
    type: string
    description: endpoint to retrieve TLS certs from

  # The following are all generated in the parent template.
  api_public_address:
    type: string
    description: Public IP address of the Kubernetes master server.
  api_private_address:
    type: string
    description: Private IP address of the Kubernetes master server.
  fixed_network:
    type: string
    description: Network from which to allocate fixed addresses.
  fixed_subnet:
    type: string
    description: Subnet from which to allocate fixed addresses.
  network_driver:
    type: string
    description: network driver to use for instantiating container networks
  wait_condition_timeout:
    type: number
    description : >
      timeout for the Wait Conditions
  secgroup_base_id:
    type: string
    description: ID of the security group for base.
  secgroup_kube_master_id:
    type: string
    description: ID of the security group for kubernetes master.
  api_pool_id:
    type: string
    description: ID of the load balancer pool of k8s API server.
  etcd_pool_id:
    type: string
    description: ID of the load balancer pool of etcd server.
  auth_url:
    type: string
    description: >
      url for kubernetes to authenticate before sending request to neutron
  username:
    type: string
    description: >
      user account
  password:
    type: string
    description: >
      user password
  tenant_name:
    type: string
    description: >
      tenant name

resources:

  master_wait_handle:
    type: OS::Heat::WaitConditionHandle

  master_wait_condition:
    type: OS::Heat::WaitCondition
    depends_on: kube_master
    properties:
      handle: {get_resource: master_wait_handle}
      timeout: {get_param: wait_condition_timeout}

  ######################################################################
  #
  # software configs.  these are components that are combined into
  # a multipart MIME user-data archive.
  #

  write_heat_params:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          template: {get_file: fragments/write-heat-params-master.yaml}
          params:
            "$KUBE_NODE_PUBLIC_IP": {get_attr: [kube_master_floating, floating_ip_address]}
            "$KUBE_NODE_IP": {get_attr: [kube_master_eth0, fixed_ips, 0, ip_address]}
            "$KUBE_API_PORT": {get_param: kubernetes_port}
            "$KUBE_ALLOW_PRIV": {get_param: kube_allow_priv}
            "$NETWORK_DRIVER": {get_param: network_driver}
            "$FLANNEL_NETWORK_CIDR": {get_param: flannel_network_cidr}
            "$FLANNEL_NETWORK_SUBNETLEN": {get_param: flannel_network_subnetlen}
            "$FLANNEL_BACKEND": {get_param: flannel_backend}
            "$PORTAL_NETWORK_CIDR": {get_param: portal_network_cidr}
            "$ETCD_DISCOVERY_URL": {get_param: discovery_url}
            "$AUTH_URL": {get_param: auth_url}
            "$USERNAME": {get_param: username}
            "$PASSWORD": {get_param: password}
            "$TENANT_NAME": {get_param: tenant_name}
            "$CLUSTER_SUBNET": {get_param: fixed_subnet}
            "$TLS_DISABLED": {get_param: tls_disabled}
            "$BAY_UUID": {get_param: bay_uuid}
            "$MAGNUM_URL": {get_param: magnum_url}

  configure_etcd:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/configure-etcd.sh}

  configure_flanneld:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/configure-flanneld-master.sh}

  create_kubernetes_user:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/create-kubernetes-user.yaml}

  configure_kubernetes:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/configure-kubernetes-master.sh}

  master_wc_notify:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          template: |
            #!/bin/bash -v
            wc_notify --data-binary '{"status": "SUCCESS"}'
          params:
            wc_notify: {get_attr: [master_wait_handle, curl_cli]}

  kube_master_init:
    type: OS::Heat::MultipartMime
    properties:
      parts:
        - config: {get_resource: write_heat_params}
        - config: {get_resource: configure_etcd}
        - config: {get_resource: configure_flanneld}
        - config: {get_resource: create_kubernetes_user}
        - config: {get_resource: configure_kubernetes}
        - config: {get_resource: master_wc_notify}

  ######################################################################
  #
  # a single kubernetes master.
  #

  kube_master:
    type: OS::Nova::Server
    properties:
      name: kube_master
      image: {get_param: server_image}
      flavor: {get_param: master_flavor}
      key_name: {get_param: ssh_key_name}
      user_data_format: RAW
      user_data: {get_resource: kube_master_init}
      config_drive: true
      networks:
        - port: {get_resource: kube_master_eth0}

  kube_master_eth0:
    type: OS::Neutron::Port
    properties:
      network: {get_param: fixed_network}
      security_groups:
        - {get_param: secgroup_base_id}
        - {get_param: secgroup_kube_master_id}
      fixed_ips:
        - subnet: {get_param: fixed_subnet}
      replacement_policy: AUTO

  kube_master_floating:
    type: OS::Neutron::FloatingIP
    properties:
      floating_network: {get_param: external_network}
      port_id: {get_resource: kube_master_eth0}

  api_pool_member:
    type: OS::Neutron::PoolMember
    properties:
      pool_id: {get_param: api_pool_id}
      address: {get_attr: [kube_master_eth0, fixed_ips, 0, ip_address]}
      protocol_port: {get_param: kubernetes_port}

  etcd_pool_member:
    type: OS::Neutron::PoolMember
    properties:
      pool_id: {get_param: etcd_pool_id}
      address: {get_attr: [kube_master_eth0, fixed_ips, 0, ip_address]}
      protocol_port: 2379

outputs:

  kube_master_ip:
    value: {get_attr: [kube_master_eth0, fixed_ips, 0, ip_address]}

  kube_master_external_ip:
    value: {get_attr: [kube_master_floating, floating_ip_address]}