heat_template_version: 2014-10-16

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

parameters:

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

  minion_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

  kubernetes_server_url:
    type: string
    description: URL of kubernetes server binary. Must be tar.gz.

  kubernetes_salt_url:
    type: string
    description: URL of kubernetes salt scripts. Must be tar.gz.

  token_kubelet:
    type: string
    description: Token used by kubelet

  token_kube_proxy:
    type: string
    description: Token used by kube-proxy

  os_auth_url:
    type: string
    description: OpenStack Auth URL
    default: false

  os_username:
    type: string
    description: OpenStack Username
    default: false

  os_password:
    type: string
    description: OpenStack Password
    default: false

  os_region_name:
    type: string
    description: OpenStack Region Name
    default: false

  os_tenant_name:
    type: string
    description: OpenStack Tenant Name
    default: false

  enable_proxy:
    type: string
    description: Whether or not to enable proxy settings
    default: false

  ftp_proxy:
    type: string
    description: FTP Proxy URL
    default: localhost

  http_proxy:
    type: string
    description: HTTP Proxy URL
    default: localhost

  https_proxy:
    type: string
    description: HTTPS Proxy URL
    default: localhost

  socks_proxy:
    type: string
    description: SOCKS Proxy URL
    default: localhost

  no_proxy:
    type: string
    description: Comma seperated list of domains/addresses that bypass proxying.
    default: localhost

  # The following are all generated in the parent template.
  kube_master_ip:
    type: string
    description: 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.
  cluster_cidr:
    type: string
    description: Subnet from which to allocate pod subnets.
  wait_condition_timeout:
    type: number
    description : >
      timeout for the Wait Conditions
  metadata:
    type: json
    description: metadata for ceilometer query
  cluster_name:
    type: string
  secgroup_base:
    type: string
  secgroup_node:
    type: string

resources:

  minion_wait_handle:
    type: OS::Heat::WaitConditionHandle

  minion_wait_condition:
    type: OS::Heat::WaitCondition
    depends_on: kube_minion
    properties:
      handle: {get_resource: minion_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.yaml}
          params:
            "$KUBERNETES_SERVER_URL": {get_param: kubernetes_server_url}
            "$KUBERNETES_SALT_URL": {get_param: kubernetes_salt_url}
            "$MASTER_IP": {get_param: kube_master_ip}

  proxy_config:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          template: {get_file: fragments/configure-proxy.sh}
          params:
            "$ENABLE_PROXY": {get_param: enable_proxy }
            "$FTP_PROXY": {get_param: ftp_proxy }
            "$HTTP_PROXY": {get_param: http_proxy }
            "$HTTPS_PROXY": {get_param: https_proxy }
            "$SOCKS_PROXY": {get_param: socks_proxy }
            "$NO_PROXY": {get_param: no_proxy }

  hostname_hack:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/hostname-hack.yaml}

  hostname_hack_script:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/hostname-hack.sh}

  kube_user:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/kube-user.yaml}

  provision_network_node:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config: {get_file: fragments/provision-network-node.sh}

  deploy_kube_auth_files_node:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          template: {get_file: fragments/deploy-kube-auth-files-node.yaml}
          params:
            "$token_kubelet": {get_param: token_kubelet}
            "$token_kube_proxy": {get_param: token_kube_proxy}

  configure_salt_node:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          template: {get_file: fragments/configure-salt.yaml}
          params:
            "$MASTER_IP": {get_param: kube_master_ip}
            "$OS_AUTH_URL": {get_param: os_auth_url}
            "$OS_USERNAME": {get_param: os_username}
            "$OS_PASSWORD": {get_param: os_password}
            "$OS_REGION_NAME": {get_param: os_region_name}
            "$OS_TENANT_NAME": {get_param: os_tenant_name}
            "$role": "kubernetes-pool"
            "$cluster_cidr": {get_param: cluster_cidr}

  run_salt:
    type: OS::Heat::SoftwareConfig
    properties:
      group: ungrouped
      config:
        str_replace:
          template: {get_file: fragments/run-salt.sh}
          params:
            "$$wc_notify": {get_attr: [minion_wait_handle, curl_cli]}

  kube_minion_init:
    type: OS::Heat::MultipartMime
    properties:
      parts:
        - config: {get_resource: write_heat_params}
        - config: {get_resource: proxy_config}
        - config: {get_resource: hostname_hack}
        - config: {get_resource: hostname_hack_script}
        - config: {get_resource: kube_user}
        - config: {get_resource: provision_network_node}
        - config: {get_resource: deploy_kube_auth_files_node}
        - config: {get_resource: configure_salt_node}
        - config: {get_resource: run_salt}

  ######################################################################
  #
  # a single kubernetes minion.
  #
  server_name_post_fix:
    type: OS::Heat::RandomString
    properties:
      character_classes: [{'class': 'lowercase', 'min': 1}]
      length: 8

  kube_minion:
    type: OS::Nova::Server
    properties:
      image: {get_param: server_image}
      flavor: {get_param: minion_flavor}
      key_name: {get_param: ssh_key_name}
      metadata: {get_param: metadata}
      user_data_format: RAW
      user_data: {get_resource: kube_minion_init}
      networks:
        - port: {get_resource: kube_minion_eth0}
      name:
        list_join: [-, [{get_param: cluster_name}, node, {get_resource: server_name_post_fix}]]

  kube_minion_eth0:
    type: OS::Neutron::Port
    properties:
      network: {get_param: fixed_network}
      security_groups:
        - {get_param: secgroup_base}
        - {get_param: secgroup_node}
      fixed_ips:
        - subnet: {get_param: fixed_subnet}
      allowed_address_pairs:
        - ip_address: 10.246.0.0/16
      replacement_policy: AUTO

  kube_minion_floating:
    type: OS::Neutron::FloatingIP
    properties:
      floating_network: {get_param: external_network}
      port_id: {get_resource: kube_minion_eth0}

outputs:

  kube_minion_ip:
    value: {get_attr: [kube_minion_eth0, fixed_ips, 0, ip_address]}
  kube_minion_external_ip:
    value: {get_attr: [kube_minion_floating, floating_ip_address]}